diff --git a/public/js/demo/matchInfo.html b/public/js/demo/matchInfo.html
index accb304..11ba7eb 100644
--- a/public/js/demo/matchInfo.html
+++ b/public/js/demo/matchInfo.html
@@ -3,24 +3,31 @@
   <head>
     <title>MatchInfo demo</title>
     <meta charset="utf-8" />
+    <script src="../lib/dagre/dagre.min.js"></script>
+    <script src="../src/menu.js"></script>
     <script src="../src/matchInfo.js"></script>
-    <link type="text/css" rel="stylesheet"
-	  href="../../css/matchinfo.css"></link>
+    <link type="text/css" rel="stylesheet" href="../../css/font-awesome.min.css"></link>
+    <link type="text/css" rel="stylesheet" href="../../css/matchinfo.css"></link>
+    <link type="text/css" rel="stylesheet" href="../../css/menu.css"></link>
     <style type="text/css" rel="stylesheet">
 
 body {
   background-color: #ffa500;
+}
+
+body, text {
   font-family: tahoma, verdana, arial;
+  color: #444;
+}
+
+text {
+  fill: #444;
 }
 
     </style>
   </head>
   <body>
 
-    <div class="matchinfo">
-      <div class="matchtable"></div>
-    </div>
-
     <script>
 var snippet = "<span title=\"cnx/l:meist\">" +
   "  <span title=\"cnx/p:ADV\">" +
@@ -62,18 +69,64 @@
   "  </span>" +
   "</span>";
 
-      // Override getMatchInfo API call
-      KorAP.API.getMatchInfo = function() {
-        return { "snippet": snippet };
-      };
+var treeSnippet =
+  "<span class=\"context-left\"></span>" +
+  "<span class=\"match\">" +
+  "  <span title=\"xip/c:MC\">" +
+  "    <span title=\"xip/c:TOP\">" +
+  "      <span title=\"xip/c:PP\">" +
+  "        <span title=\"xip/c:PREP\">Mit</span>" +
+  "        <span title=\"xip/c:NP\">" +
+  "          <span title=\"xip/c:DET\">dieser</span>" +
+  "          <span title=\"xip/c:NPA\">" +
+  "            <span title=\"xip/c:NOUN\">Methode</span>" +
+  "          </span>" +
+  "        </span>" +
+  "      </span>" +
+  "      <span title=\"xip/c:VERB\">ist</span>" +
+  "      <span title=\"xip/c:NP\">" +
+  "        <span title=\"xip/c:PRON\">es</span>" +
+  "      </span>" +
+  "      <span title=\"xip/c:AP\">" +
+  "        <span title=\"xip/c:ADV\">nun</span>" +
+  "        <span title=\"xip/c:ADJ\">möglich</span>" +
+  "      </span>" +
+  "      <span title=\"xip/c:ADV\">z. B.</span>" +
+  "      <span title=\"xip/c:NPA\">" +
+  "        <span title=\"xip/c:NP\">" +
+  "          <span title=\"xip/c:NOUN\">Voice</span>" +
+  "        </span>" +
+  "      </span>" + "(" +
+  "      <span title=\"xip/c:INS\">" +
+  "        <span title=\"xip/c:NPA\">" +
+  "          <span title=\"xip/c:NP\">" +
+  "            <span title=\"xip/c:NOUN\">Sprache</span>" +
+  "          </span>" +
+  "        </span>" +
+  "      </span>" + ")" +
+  "      <span title=\"xip/c:VERB\">bevorzugt</span>" +
+  "      <span title=\"xip/c:PP\">" +
+  "        <span title=\"xip/c:PREP\">in</span>" +
+  "        <span title=\"xip/c:NP\">" +
+  "          <span title=\"xip/c:PRON\">der</span>" +
+  "        </span>" +
+  "        <span title=\"xip/c:NPA\">" +
+  "          <span title=\"xip/c:NP\">" +
+  "            <span title=\"xip/c:NOUN\">Bridge</span>" +
+  "          </span>" +
+  "        </span>" +
+  "      </span>" +
+  "      <span title=\"xip/c:INFC\">" +
+  "        <span title=\"xip/c:INS\">" +
+  "          <span title=\"xip/c:VERB\">weiterzugeben</span>" +
+  "        </span>" +
+  "      </span>" +
+  "    </span>" +
+  "  </span>" +
+  "</span>" +
+  "<span class=\"context-right\"></span>";
 
-var info = KorAP.MatchInfo.create({
-  'corpusID' : 'WPD',
-  'docID' : 'UUU',
-  'textID' : '01912',
-  'pos' : 'p121-122'
-},
-[
+var available =[
   'base/s=spans',
   'corenlp/c=spans',
   'corenlp/ne=tokens',
@@ -88,14 +141,49 @@
   'tt/l=tokens',
   'tt/p=tokens',
   'tt/s=spans'
-]);
-      var t = info.getTable();
-      document.getElementsByClassName('matchtable')[0]
-        .appendChild(t.element());
+];
+
+var match = {
+  'corpusID' : 'WPD',
+  'docID' : 'UUU',
+  'textID' : '01912',
+  'pos' : 'p121-122'
+};
+
+// Parse and show the table
+// Override getMatchInfo API call
+KorAP.API.getMatchInfo = function(match, callObj) {
+  if (callObj["spans"] !== undefined && callObj["spans"] === true) {
+    return { "snippet": treeSnippet };
+  }
+  else {
+    return { "snippet": snippet };
+  }
+};
+
+var e = KorAP.MatchInfo.create(match, available).element();
+document.getElementsByTagName('body')[0].appendChild(e);
+
+/*
+var t = KorAP.MatchInfo.create(match, available).getTable();
+document.getElementsByClassName('matchtable')[0]
+.appendChild(t.element());
+
+// parse and show the tree
+KorAP.API.getMatchInfo = function() {
+  return { "snippet": treeSnippet };
+};
+
+var tree = KorAP.MatchInfo.create(match, available).getTree();
+document.getElementsByClassName('matchtree')[0]
+.getElementsByTagName('div')[0]
+.appendChild(tree.element());
+
+tree.center();
+*/
     </script>
 
-
-
+    <!--
     <div class="matchinfo">
       <div class="matchtable">
 	<table>
@@ -127,13 +215,14 @@
 	      <th>es</th>
 	      <th>z</th>
 	      <td>ABC DEF GHI JKL MNO PQR STU VWX YZ ABC DEF GHI JKL MNO PQR STU VWX YZ</td>
-	  <td>ABC DEF GHI JKL MNO PQR STU VWX YZ ABC DEF GHI JKL MNO PQR STU VWX YZ</td>
-	  <td>ABC DEF GHI JKL MNO PQR STU VWX YZ ABC DEF GHI JKL MNO PQR STU VWX YZ<br />ABC DEF GHI JKL MNO PQR STU VWX YZ ABC DEF GHI JKL MNO PQR STU VWX YZ<br />ABC DEF GHI JKL MNO PQR STU VWX YZ ABC DEF GHI JKL MNO PQR STU VWX YZ</td>
-	</tr>
-      </tbody>
-    </table>
-  </div>
-</div>
+	      <td>ABC DEF GHI JKL MNO PQR STU VWX YZ ABC DEF GHI JKL MNO PQR STU VWX YZ</td>
+	      <td>ABC DEF GHI JKL MNO PQR STU VWX YZ ABC DEF GHI JKL MNO PQR STU VWX YZ<br />ABC DEF GHI JKL MNO PQR STU VWX YZ ABC DEF GHI JKL MNO PQR STU VWX YZ<br />ABC DEF GHI JKL MNO PQR STU VWX YZ ABC DEF GHI JKL MNO PQR STU VWX YZ</td>
+	    </tr>
+	  </tbody>
+	</table>
+      </div>
+    </div>
+    -->
 
   </body>
 </html>
diff --git a/public/js/lib/d3/d3.js b/public/js/lib/d3/d3.js
deleted file mode 100644
index 8868e42..0000000
--- a/public/js/lib/d3/d3.js
+++ /dev/null
@@ -1,9504 +0,0 @@
-!function() {
-  var d3 = {
-    version: "3.5.5"
-  };
-  var d3_arraySlice = [].slice, d3_array = function(list) {
-    return d3_arraySlice.call(list);
-  };
-  var d3_document = this.document;
-  function d3_documentElement(node) {
-    return node && (node.ownerDocument || node.document || node).documentElement;
-  }
-  function d3_window(node) {
-    return node && (node.ownerDocument && node.ownerDocument.defaultView || node.document && node || node.defaultView);
-  }
-  if (d3_document) {
-    try {
-      d3_array(d3_document.documentElement.childNodes)[0].nodeType;
-    } catch (e) {
-      d3_array = function(list) {
-        var i = list.length, array = new Array(i);
-        while (i--) array[i] = list[i];
-        return array;
-      };
-    }
-  }
-  if (!Date.now) Date.now = function() {
-    return +new Date();
-  };
-  if (d3_document) {
-    try {
-      d3_document.createElement("DIV").style.setProperty("opacity", 0, "");
-    } catch (error) {
-      var d3_element_prototype = this.Element.prototype, d3_element_setAttribute = d3_element_prototype.setAttribute, d3_element_setAttributeNS = d3_element_prototype.setAttributeNS, d3_style_prototype = this.CSSStyleDeclaration.prototype, d3_style_setProperty = d3_style_prototype.setProperty;
-      d3_element_prototype.setAttribute = function(name, value) {
-        d3_element_setAttribute.call(this, name, value + "");
-      };
-      d3_element_prototype.setAttributeNS = function(space, local, value) {
-        d3_element_setAttributeNS.call(this, space, local, value + "");
-      };
-      d3_style_prototype.setProperty = function(name, value, priority) {
-        d3_style_setProperty.call(this, name, value + "", priority);
-      };
-    }
-  }
-  d3.ascending = d3_ascending;
-  function d3_ascending(a, b) {
-    return a < b ? -1 : a > b ? 1 : a >= b ? 0 : NaN;
-  }
-  d3.descending = function(a, b) {
-    return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
-  };
-  d3.min = function(array, f) {
-    var i = -1, n = array.length, a, b;
-    if (arguments.length === 1) {
-      while (++i < n) if ((b = array[i]) != null && b >= b) {
-        a = b;
-        break;
-      }
-      while (++i < n) if ((b = array[i]) != null && a > b) a = b;
-    } else {
-      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
-        a = b;
-        break;
-      }
-      while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
-    }
-    return a;
-  };
-  d3.max = function(array, f) {
-    var i = -1, n = array.length, a, b;
-    if (arguments.length === 1) {
-      while (++i < n) if ((b = array[i]) != null && b >= b) {
-        a = b;
-        break;
-      }
-      while (++i < n) if ((b = array[i]) != null && b > a) a = b;
-    } else {
-      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
-        a = b;
-        break;
-      }
-      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
-    }
-    return a;
-  };
-  d3.extent = function(array, f) {
-    var i = -1, n = array.length, a, b, c;
-    if (arguments.length === 1) {
-      while (++i < n) if ((b = array[i]) != null && b >= b) {
-        a = c = b;
-        break;
-      }
-      while (++i < n) if ((b = array[i]) != null) {
-        if (a > b) a = b;
-        if (c < b) c = b;
-      }
-    } else {
-      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
-        a = c = b;
-        break;
-      }
-      while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
-        if (a > b) a = b;
-        if (c < b) c = b;
-      }
-    }
-    return [ a, c ];
-  };
-  function d3_number(x) {
-    return x === null ? NaN : +x;
-  }
-  function d3_numeric(x) {
-    return !isNaN(x);
-  }
-  d3.sum = function(array, f) {
-    var s = 0, n = array.length, a, i = -1;
-    if (arguments.length === 1) {
-      while (++i < n) if (d3_numeric(a = +array[i])) s += a;
-    } else {
-      while (++i < n) if (d3_numeric(a = +f.call(array, array[i], i))) s += a;
-    }
-    return s;
-  };
-  d3.mean = function(array, f) {
-    var s = 0, n = array.length, a, i = -1, j = n;
-    if (arguments.length === 1) {
-      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) s += a; else --j;
-    } else {
-      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) s += a; else --j;
-    }
-    if (j) return s / j;
-  };
-  d3.quantile = function(values, p) {
-    var H = (values.length - 1) * p + 1, h = Math.floor(H), v = +values[h - 1], e = H - h;
-    return e ? v + e * (values[h] - v) : v;
-  };
-  d3.median = function(array, f) {
-    var numbers = [], n = array.length, a, i = -1;
-    if (arguments.length === 1) {
-      while (++i < n) if (d3_numeric(a = d3_number(array[i]))) numbers.push(a);
-    } else {
-      while (++i < n) if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) numbers.push(a);
-    }
-    if (numbers.length) return d3.quantile(numbers.sort(d3_ascending), .5);
-  };
-  d3.variance = function(array, f) {
-    var n = array.length, m = 0, a, d, s = 0, i = -1, j = 0;
-    if (arguments.length === 1) {
-      while (++i < n) {
-        if (d3_numeric(a = d3_number(array[i]))) {
-          d = a - m;
-          m += d / ++j;
-          s += d * (a - m);
-        }
-      }
-    } else {
-      while (++i < n) {
-        if (d3_numeric(a = d3_number(f.call(array, array[i], i)))) {
-          d = a - m;
-          m += d / ++j;
-          s += d * (a - m);
-        }
-      }
-    }
-    if (j > 1) return s / (j - 1);
-  };
-  d3.deviation = function() {
-    var v = d3.variance.apply(this, arguments);
-    return v ? Math.sqrt(v) : v;
-  };
-  function d3_bisector(compare) {
-    return {
-      left: function(a, x, lo, hi) {
-        if (arguments.length < 3) lo = 0;
-        if (arguments.length < 4) hi = a.length;
-        while (lo < hi) {
-          var mid = lo + hi >>> 1;
-          if (compare(a[mid], x) < 0) lo = mid + 1; else hi = mid;
-        }
-        return lo;
-      },
-      right: function(a, x, lo, hi) {
-        if (arguments.length < 3) lo = 0;
-        if (arguments.length < 4) hi = a.length;
-        while (lo < hi) {
-          var mid = lo + hi >>> 1;
-          if (compare(a[mid], x) > 0) hi = mid; else lo = mid + 1;
-        }
-        return lo;
-      }
-    };
-  }
-  var d3_bisect = d3_bisector(d3_ascending);
-  d3.bisectLeft = d3_bisect.left;
-  d3.bisect = d3.bisectRight = d3_bisect.right;
-  d3.bisector = function(f) {
-    return d3_bisector(f.length === 1 ? function(d, x) {
-      return d3_ascending(f(d), x);
-    } : f);
-  };
-  d3.shuffle = function(array, i0, i1) {
-    if ((m = arguments.length) < 3) {
-      i1 = array.length;
-      if (m < 2) i0 = 0;
-    }
-    var m = i1 - i0, t, i;
-    while (m) {
-      i = Math.random() * m-- | 0;
-      t = array[m + i0], array[m + i0] = array[i + i0], array[i + i0] = t;
-    }
-    return array;
-  };
-  d3.permute = function(array, indexes) {
-    var i = indexes.length, permutes = new Array(i);
-    while (i--) permutes[i] = array[indexes[i]];
-    return permutes;
-  };
-  d3.pairs = function(array) {
-    var i = 0, n = array.length - 1, p0, p1 = array[0], pairs = new Array(n < 0 ? 0 : n);
-    while (i < n) pairs[i] = [ p0 = p1, p1 = array[++i] ];
-    return pairs;
-  };
-  d3.zip = function() {
-    if (!(n = arguments.length)) return [];
-    for (var i = -1, m = d3.min(arguments, d3_zipLength), zips = new Array(m); ++i < m; ) {
-      for (var j = -1, n, zip = zips[i] = new Array(n); ++j < n; ) {
-        zip[j] = arguments[j][i];
-      }
-    }
-    return zips;
-  };
-  function d3_zipLength(d) {
-    return d.length;
-  }
-  d3.transpose = function(matrix) {
-    return d3.zip.apply(d3, matrix);
-  };
-  d3.keys = function(map) {
-    var keys = [];
-    for (var key in map) keys.push(key);
-    return keys;
-  };
-  d3.values = function(map) {
-    var values = [];
-    for (var key in map) values.push(map[key]);
-    return values;
-  };
-  d3.entries = function(map) {
-    var entries = [];
-    for (var key in map) entries.push({
-      key: key,
-      value: map[key]
-    });
-    return entries;
-  };
-  d3.merge = function(arrays) {
-    var n = arrays.length, m, i = -1, j = 0, merged, array;
-    while (++i < n) j += arrays[i].length;
-    merged = new Array(j);
-    while (--n >= 0) {
-      array = arrays[n];
-      m = array.length;
-      while (--m >= 0) {
-        merged[--j] = array[m];
-      }
-    }
-    return merged;
-  };
-  var abs = Math.abs;
-  d3.range = function(start, stop, step) {
-    if (arguments.length < 3) {
-      step = 1;
-      if (arguments.length < 2) {
-        stop = start;
-        start = 0;
-      }
-    }
-    if ((stop - start) / step === Infinity) throw new Error("infinite range");
-    var range = [], k = d3_range_integerScale(abs(step)), i = -1, j;
-    start *= k, stop *= k, step *= k;
-    if (step < 0) while ((j = start + step * ++i) > stop) range.push(j / k); else while ((j = start + step * ++i) < stop) range.push(j / k);
-    return range;
-  };
-  function d3_range_integerScale(x) {
-    var k = 1;
-    while (x * k % 1) k *= 10;
-    return k;
-  }
-  function d3_class(ctor, properties) {
-    for (var key in properties) {
-      Object.defineProperty(ctor.prototype, key, {
-        value: properties[key],
-        enumerable: false
-      });
-    }
-  }
-  d3.map = function(object, f) {
-    var map = new d3_Map();
-    if (object instanceof d3_Map) {
-      object.forEach(function(key, value) {
-        map.set(key, value);
-      });
-    } else if (Array.isArray(object)) {
-      var i = -1, n = object.length, o;
-      if (arguments.length === 1) while (++i < n) map.set(i, object[i]); else while (++i < n) map.set(f.call(object, o = object[i], i), o);
-    } else {
-      for (var key in object) map.set(key, object[key]);
-    }
-    return map;
-  };
-  function d3_Map() {
-    this._ = Object.create(null);
-  }
-  var d3_map_proto = "__proto__", d3_map_zero = "\x00";
-  d3_class(d3_Map, {
-    has: d3_map_has,
-    get: function(key) {
-      return this._[d3_map_escape(key)];
-    },
-    set: function(key, value) {
-      return this._[d3_map_escape(key)] = value;
-    },
-    remove: d3_map_remove,
-    keys: d3_map_keys,
-    values: function() {
-      var values = [];
-      for (var key in this._) values.push(this._[key]);
-      return values;
-    },
-    entries: function() {
-      var entries = [];
-      for (var key in this._) entries.push({
-        key: d3_map_unescape(key),
-        value: this._[key]
-      });
-      return entries;
-    },
-    size: d3_map_size,
-    empty: d3_map_empty,
-    forEach: function(f) {
-      for (var key in this._) f.call(this, d3_map_unescape(key), this._[key]);
-    }
-  });
-  function d3_map_escape(key) {
-    return (key += "") === d3_map_proto || key[0] === d3_map_zero ? d3_map_zero + key : key;
-  }
-  function d3_map_unescape(key) {
-    return (key += "")[0] === d3_map_zero ? key.slice(1) : key;
-  }
-  function d3_map_has(key) {
-    return d3_map_escape(key) in this._;
-  }
-  function d3_map_remove(key) {
-    return (key = d3_map_escape(key)) in this._ && delete this._[key];
-  }
-  function d3_map_keys() {
-    var keys = [];
-    for (var key in this._) keys.push(d3_map_unescape(key));
-    return keys;
-  }
-  function d3_map_size() {
-    var size = 0;
-    for (var key in this._) ++size;
-    return size;
-  }
-  function d3_map_empty() {
-    for (var key in this._) return false;
-    return true;
-  }
-  d3.nest = function() {
-    var nest = {}, keys = [], sortKeys = [], sortValues, rollup;
-    function map(mapType, array, depth) {
-      if (depth >= keys.length) return rollup ? rollup.call(nest, array) : sortValues ? array.sort(sortValues) : array;
-      var i = -1, n = array.length, key = keys[depth++], keyValue, object, setter, valuesByKey = new d3_Map(), values;
-      while (++i < n) {
-        if (values = valuesByKey.get(keyValue = key(object = array[i]))) {
-          values.push(object);
-        } else {
-          valuesByKey.set(keyValue, [ object ]);
-        }
-      }
-      if (mapType) {
-        object = mapType();
-        setter = function(keyValue, values) {
-          object.set(keyValue, map(mapType, values, depth));
-        };
-      } else {
-        object = {};
-        setter = function(keyValue, values) {
-          object[keyValue] = map(mapType, values, depth);
-        };
-      }
-      valuesByKey.forEach(setter);
-      return object;
-    }
-    function entries(map, depth) {
-      if (depth >= keys.length) return map;
-      var array = [], sortKey = sortKeys[depth++];
-      map.forEach(function(key, keyMap) {
-        array.push({
-          key: key,
-          values: entries(keyMap, depth)
-        });
-      });
-      return sortKey ? array.sort(function(a, b) {
-        return sortKey(a.key, b.key);
-      }) : array;
-    }
-    nest.map = function(array, mapType) {
-      return map(mapType, array, 0);
-    };
-    nest.entries = function(array) {
-      return entries(map(d3.map, array, 0), 0);
-    };
-    nest.key = function(d) {
-      keys.push(d);
-      return nest;
-    };
-    nest.sortKeys = function(order) {
-      sortKeys[keys.length - 1] = order;
-      return nest;
-    };
-    nest.sortValues = function(order) {
-      sortValues = order;
-      return nest;
-    };
-    nest.rollup = function(f) {
-      rollup = f;
-      return nest;
-    };
-    return nest;
-  };
-  d3.set = function(array) {
-    var set = new d3_Set();
-    if (array) for (var i = 0, n = array.length; i < n; ++i) set.add(array[i]);
-    return set;
-  };
-  function d3_Set() {
-    this._ = Object.create(null);
-  }
-  d3_class(d3_Set, {
-    has: d3_map_has,
-    add: function(key) {
-      this._[d3_map_escape(key += "")] = true;
-      return key;
-    },
-    remove: d3_map_remove,
-    values: d3_map_keys,
-    size: d3_map_size,
-    empty: d3_map_empty,
-    forEach: function(f) {
-      for (var key in this._) f.call(this, d3_map_unescape(key));
-    }
-  });
-  d3.behavior = {};
-  function d3_identity(d) {
-    return d;
-  }
-  d3.rebind = function(target, source) {
-    var i = 1, n = arguments.length, method;
-    while (++i < n) target[method = arguments[i]] = d3_rebind(target, source, source[method]);
-    return target;
-  };
-  function d3_rebind(target, source, method) {
-    return function() {
-      var value = method.apply(source, arguments);
-      return value === source ? target : value;
-    };
-  }
-  function d3_vendorSymbol(object, name) {
-    if (name in object) return name;
-    name = name.charAt(0).toUpperCase() + name.slice(1);
-    for (var i = 0, n = d3_vendorPrefixes.length; i < n; ++i) {
-      var prefixName = d3_vendorPrefixes[i] + name;
-      if (prefixName in object) return prefixName;
-    }
-  }
-  var d3_vendorPrefixes = [ "webkit", "ms", "moz", "Moz", "o", "O" ];
-  function d3_noop() {}
-  d3.dispatch = function() {
-    var dispatch = new d3_dispatch(), i = -1, n = arguments.length;
-    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
-    return dispatch;
-  };
-  function d3_dispatch() {}
-  d3_dispatch.prototype.on = function(type, listener) {
-    var i = type.indexOf("."), name = "";
-    if (i >= 0) {
-      name = type.slice(i + 1);
-      type = type.slice(0, i);
-    }
-    if (type) return arguments.length < 2 ? this[type].on(name) : this[type].on(name, listener);
-    if (arguments.length === 2) {
-      if (listener == null) for (type in this) {
-        if (this.hasOwnProperty(type)) this[type].on(name, null);
-      }
-      return this;
-    }
-  };
-  function d3_dispatch_event(dispatch) {
-    var listeners = [], listenerByName = new d3_Map();
-    function event() {
-      var z = listeners, i = -1, n = z.length, l;
-      while (++i < n) if (l = z[i].on) l.apply(this, arguments);
-      return dispatch;
-    }
-    event.on = function(name, listener) {
-      var l = listenerByName.get(name), i;
-      if (arguments.length < 2) return l && l.on;
-      if (l) {
-        l.on = null;
-        listeners = listeners.slice(0, i = listeners.indexOf(l)).concat(listeners.slice(i + 1));
-        listenerByName.remove(name);
-      }
-      if (listener) listeners.push(listenerByName.set(name, {
-        on: listener
-      }));
-      return dispatch;
-    };
-    return event;
-  }
-  d3.event = null;
-  function d3_eventPreventDefault() {
-    d3.event.preventDefault();
-  }
-  function d3_eventSource() {
-    var e = d3.event, s;
-    while (s = e.sourceEvent) e = s;
-    return e;
-  }
-  function d3_eventDispatch(target) {
-    var dispatch = new d3_dispatch(), i = 0, n = arguments.length;
-    while (++i < n) dispatch[arguments[i]] = d3_dispatch_event(dispatch);
-    dispatch.of = function(thiz, argumentz) {
-      return function(e1) {
-        try {
-          var e0 = e1.sourceEvent = d3.event;
-          e1.target = target;
-          d3.event = e1;
-          dispatch[e1.type].apply(thiz, argumentz);
-        } finally {
-          d3.event = e0;
-        }
-      };
-    };
-    return dispatch;
-  }
-  d3.requote = function(s) {
-    return s.replace(d3_requote_re, "\\$&");
-  };
-  var d3_requote_re = /[\\\^\$\*\+\?\|\[\]\(\)\.\{\}]/g;
-  var d3_subclass = {}.__proto__ ? function(object, prototype) {
-    object.__proto__ = prototype;
-  } : function(object, prototype) {
-    for (var property in prototype) object[property] = prototype[property];
-  };
-  function d3_selection(groups) {
-    d3_subclass(groups, d3_selectionPrototype);
-    return groups;
-  }
-  var d3_select = function(s, n) {
-    return n.querySelector(s);
-  }, d3_selectAll = function(s, n) {
-    return n.querySelectorAll(s);
-  }, d3_selectMatches = function(n, s) {
-    var d3_selectMatcher = n.matches || n[d3_vendorSymbol(n, "matchesSelector")];
-    d3_selectMatches = function(n, s) {
-      return d3_selectMatcher.call(n, s);
-    };
-    return d3_selectMatches(n, s);
-  };
-  if (typeof Sizzle === "function") {
-    d3_select = function(s, n) {
-      return Sizzle(s, n)[0] || null;
-    };
-    d3_selectAll = Sizzle;
-    d3_selectMatches = Sizzle.matchesSelector;
-  }
-  d3.selection = function() {
-    return d3.select(d3_document.documentElement);
-  };
-  var d3_selectionPrototype = d3.selection.prototype = [];
-  d3_selectionPrototype.select = function(selector) {
-    var subgroups = [], subgroup, subnode, group, node;
-    selector = d3_selection_selector(selector);
-    for (var j = -1, m = this.length; ++j < m; ) {
-      subgroups.push(subgroup = []);
-      subgroup.parentNode = (group = this[j]).parentNode;
-      for (var i = -1, n = group.length; ++i < n; ) {
-        if (node = group[i]) {
-          subgroup.push(subnode = selector.call(node, node.__data__, i, j));
-          if (subnode && "__data__" in node) subnode.__data__ = node.__data__;
-        } else {
-          subgroup.push(null);
-        }
-      }
-    }
-    return d3_selection(subgroups);
-  };
-  function d3_selection_selector(selector) {
-    return typeof selector === "function" ? selector : function() {
-      return d3_select(selector, this);
-    };
-  }
-  d3_selectionPrototype.selectAll = function(selector) {
-    var subgroups = [], subgroup, node;
-    selector = d3_selection_selectorAll(selector);
-    for (var j = -1, m = this.length; ++j < m; ) {
-      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
-        if (node = group[i]) {
-          subgroups.push(subgroup = d3_array(selector.call(node, node.__data__, i, j)));
-          subgroup.parentNode = node;
-        }
-      }
-    }
-    return d3_selection(subgroups);
-  };
-  function d3_selection_selectorAll(selector) {
-    return typeof selector === "function" ? selector : function() {
-      return d3_selectAll(selector, this);
-    };
-  }
-  var d3_nsPrefix = {
-    svg: "http://www.w3.org/2000/svg",
-    xhtml: "http://www.w3.org/1999/xhtml",
-    xlink: "http://www.w3.org/1999/xlink",
-    xml: "http://www.w3.org/XML/1998/namespace",
-    xmlns: "http://www.w3.org/2000/xmlns/"
-  };
-  d3.ns = {
-    prefix: d3_nsPrefix,
-    qualify: function(name) {
-      var i = name.indexOf(":"), prefix = name;
-      if (i >= 0) {
-        prefix = name.slice(0, i);
-        name = name.slice(i + 1);
-      }
-      return d3_nsPrefix.hasOwnProperty(prefix) ? {
-        space: d3_nsPrefix[prefix],
-        local: name
-      } : name;
-    }
-  };
-  d3_selectionPrototype.attr = function(name, value) {
-    if (arguments.length < 2) {
-      if (typeof name === "string") {
-        var node = this.node();
-        name = d3.ns.qualify(name);
-        return name.local ? node.getAttributeNS(name.space, name.local) : node.getAttribute(name);
-      }
-      for (value in name) this.each(d3_selection_attr(value, name[value]));
-      return this;
-    }
-    return this.each(d3_selection_attr(name, value));
-  };
-  function d3_selection_attr(name, value) {
-    name = d3.ns.qualify(name);
-    function attrNull() {
-      this.removeAttribute(name);
-    }
-    function attrNullNS() {
-      this.removeAttributeNS(name.space, name.local);
-    }
-    function attrConstant() {
-      this.setAttribute(name, value);
-    }
-    function attrConstantNS() {
-      this.setAttributeNS(name.space, name.local, value);
-    }
-    function attrFunction() {
-      var x = value.apply(this, arguments);
-      if (x == null) this.removeAttribute(name); else this.setAttribute(name, x);
-    }
-    function attrFunctionNS() {
-      var x = value.apply(this, arguments);
-      if (x == null) this.removeAttributeNS(name.space, name.local); else this.setAttributeNS(name.space, name.local, x);
-    }
-    return value == null ? name.local ? attrNullNS : attrNull : typeof value === "function" ? name.local ? attrFunctionNS : attrFunction : name.local ? attrConstantNS : attrConstant;
-  }
-  function d3_collapse(s) {
-    return s.trim().replace(/\s+/g, " ");
-  }
-  d3_selectionPrototype.classed = function(name, value) {
-    if (arguments.length < 2) {
-      if (typeof name === "string") {
-        var node = this.node(), n = (name = d3_selection_classes(name)).length, i = -1;
-        if (value = node.classList) {
-          while (++i < n) if (!value.contains(name[i])) return false;
-        } else {
-          value = node.getAttribute("class");
-          while (++i < n) if (!d3_selection_classedRe(name[i]).test(value)) return false;
-        }
-        return true;
-      }
-      for (value in name) this.each(d3_selection_classed(value, name[value]));
-      return this;
-    }
-    return this.each(d3_selection_classed(name, value));
-  };
-  function d3_selection_classedRe(name) {
-    return new RegExp("(?:^|\\s+)" + d3.requote(name) + "(?:\\s+|$)", "g");
-  }
-  function d3_selection_classes(name) {
-    return (name + "").trim().split(/^|\s+/);
-  }
-  function d3_selection_classed(name, value) {
-    name = d3_selection_classes(name).map(d3_selection_classedName);
-    var n = name.length;
-    function classedConstant() {
-      var i = -1;
-      while (++i < n) name[i](this, value);
-    }
-    function classedFunction() {
-      var i = -1, x = value.apply(this, arguments);
-      while (++i < n) name[i](this, x);
-    }
-    return typeof value === "function" ? classedFunction : classedConstant;
-  }
-  function d3_selection_classedName(name) {
-    var re = d3_selection_classedRe(name);
-    return function(node, value) {
-      if (c = node.classList) return value ? c.add(name) : c.remove(name);
-      var c = node.getAttribute("class") || "";
-      if (value) {
-        re.lastIndex = 0;
-        if (!re.test(c)) node.setAttribute("class", d3_collapse(c + " " + name));
-      } else {
-        node.setAttribute("class", d3_collapse(c.replace(re, " ")));
-      }
-    };
-  }
-  d3_selectionPrototype.style = function(name, value, priority) {
-    var n = arguments.length;
-    if (n < 3) {
-      if (typeof name !== "string") {
-        if (n < 2) value = "";
-        for (priority in name) this.each(d3_selection_style(priority, name[priority], value));
-        return this;
-      }
-      if (n < 2) {
-        var node = this.node();
-        return d3_window(node).getComputedStyle(node, null).getPropertyValue(name);
-      }
-      priority = "";
-    }
-    return this.each(d3_selection_style(name, value, priority));
-  };
-  function d3_selection_style(name, value, priority) {
-    function styleNull() {
-      this.style.removeProperty(name);
-    }
-    function styleConstant() {
-      this.style.setProperty(name, value, priority);
-    }
-    function styleFunction() {
-      var x = value.apply(this, arguments);
-      if (x == null) this.style.removeProperty(name); else this.style.setProperty(name, x, priority);
-    }
-    return value == null ? styleNull : typeof value === "function" ? styleFunction : styleConstant;
-  }
-  d3_selectionPrototype.property = function(name, value) {
-    if (arguments.length < 2) {
-      if (typeof name === "string") return this.node()[name];
-      for (value in name) this.each(d3_selection_property(value, name[value]));
-      return this;
-    }
-    return this.each(d3_selection_property(name, value));
-  };
-  function d3_selection_property(name, value) {
-    function propertyNull() {
-      delete this[name];
-    }
-    function propertyConstant() {
-      this[name] = value;
-    }
-    function propertyFunction() {
-      var x = value.apply(this, arguments);
-      if (x == null) delete this[name]; else this[name] = x;
-    }
-    return value == null ? propertyNull : typeof value === "function" ? propertyFunction : propertyConstant;
-  }
-  d3_selectionPrototype.text = function(value) {
-    return arguments.length ? this.each(typeof value === "function" ? function() {
-      var v = value.apply(this, arguments);
-      this.textContent = v == null ? "" : v;
-    } : value == null ? function() {
-      this.textContent = "";
-    } : function() {
-      this.textContent = value;
-    }) : this.node().textContent;
-  };
-  d3_selectionPrototype.html = function(value) {
-    return arguments.length ? this.each(typeof value === "function" ? function() {
-      var v = value.apply(this, arguments);
-      this.innerHTML = v == null ? "" : v;
-    } : value == null ? function() {
-      this.innerHTML = "";
-    } : function() {
-      this.innerHTML = value;
-    }) : this.node().innerHTML;
-  };
-  d3_selectionPrototype.append = function(name) {
-    name = d3_selection_creator(name);
-    return this.select(function() {
-      return this.appendChild(name.apply(this, arguments));
-    });
-  };
-  function d3_selection_creator(name) {
-    function create() {
-      var document = this.ownerDocument, namespace = this.namespaceURI;
-      return namespace ? document.createElementNS(namespace, name) : document.createElement(name);
-    }
-    function createNS() {
-      return this.ownerDocument.createElementNS(name.space, name.local);
-    }
-    return typeof name === "function" ? name : (name = d3.ns.qualify(name)).local ? createNS : create;
-  }
-  d3_selectionPrototype.insert = function(name, before) {
-    name = d3_selection_creator(name);
-    before = d3_selection_selector(before);
-    return this.select(function() {
-      return this.insertBefore(name.apply(this, arguments), before.apply(this, arguments) || null);
-    });
-  };
-  d3_selectionPrototype.remove = function() {
-    return this.each(d3_selectionRemove);
-  };
-  function d3_selectionRemove() {
-    var parent = this.parentNode;
-    if (parent) parent.removeChild(this);
-  }
-  d3_selectionPrototype.data = function(value, key) {
-    var i = -1, n = this.length, group, node;
-    if (!arguments.length) {
-      value = new Array(n = (group = this[0]).length);
-      while (++i < n) {
-        if (node = group[i]) {
-          value[i] = node.__data__;
-        }
-      }
-      return value;
-    }
-    function bind(group, groupData) {
-      var i, n = group.length, m = groupData.length, n0 = Math.min(n, m), updateNodes = new Array(m), enterNodes = new Array(m), exitNodes = new Array(n), node, nodeData;
-      if (key) {
-        var nodeByKeyValue = new d3_Map(), keyValues = new Array(n), keyValue;
-        for (i = -1; ++i < n; ) {
-          if (nodeByKeyValue.has(keyValue = key.call(node = group[i], node.__data__, i))) {
-            exitNodes[i] = node;
-          } else {
-            nodeByKeyValue.set(keyValue, node);
-          }
-          keyValues[i] = keyValue;
-        }
-        for (i = -1; ++i < m; ) {
-          if (!(node = nodeByKeyValue.get(keyValue = key.call(groupData, nodeData = groupData[i], i)))) {
-            enterNodes[i] = d3_selection_dataNode(nodeData);
-          } else if (node !== true) {
-            updateNodes[i] = node;
-            node.__data__ = nodeData;
-          }
-          nodeByKeyValue.set(keyValue, true);
-        }
-        for (i = -1; ++i < n; ) {
-          if (nodeByKeyValue.get(keyValues[i]) !== true) {
-            exitNodes[i] = group[i];
-          }
-        }
-      } else {
-        for (i = -1; ++i < n0; ) {
-          node = group[i];
-          nodeData = groupData[i];
-          if (node) {
-            node.__data__ = nodeData;
-            updateNodes[i] = node;
-          } else {
-            enterNodes[i] = d3_selection_dataNode(nodeData);
-          }
-        }
-        for (;i < m; ++i) {
-          enterNodes[i] = d3_selection_dataNode(groupData[i]);
-        }
-        for (;i < n; ++i) {
-          exitNodes[i] = group[i];
-        }
-      }
-      enterNodes.update = updateNodes;
-      enterNodes.parentNode = updateNodes.parentNode = exitNodes.parentNode = group.parentNode;
-      enter.push(enterNodes);
-      update.push(updateNodes);
-      exit.push(exitNodes);
-    }
-    var enter = d3_selection_enter([]), update = d3_selection([]), exit = d3_selection([]);
-    if (typeof value === "function") {
-      while (++i < n) {
-        bind(group = this[i], value.call(group, group.parentNode.__data__, i));
-      }
-    } else {
-      while (++i < n) {
-        bind(group = this[i], value);
-      }
-    }
-    update.enter = function() {
-      return enter;
-    };
-    update.exit = function() {
-      return exit;
-    };
-    return update;
-  };
-  function d3_selection_dataNode(data) {
-    return {
-      __data__: data
-    };
-  }
-  d3_selectionPrototype.datum = function(value) {
-    return arguments.length ? this.property("__data__", value) : this.property("__data__");
-  };
-  d3_selectionPrototype.filter = function(filter) {
-    var subgroups = [], subgroup, group, node;
-    if (typeof filter !== "function") filter = d3_selection_filter(filter);
-    for (var j = 0, m = this.length; j < m; j++) {
-      subgroups.push(subgroup = []);
-      subgroup.parentNode = (group = this[j]).parentNode;
-      for (var i = 0, n = group.length; i < n; i++) {
-        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
-          subgroup.push(node);
-        }
-      }
-    }
-    return d3_selection(subgroups);
-  };
-  function d3_selection_filter(selector) {
-    return function() {
-      return d3_selectMatches(this, selector);
-    };
-  }
-  d3_selectionPrototype.order = function() {
-    for (var j = -1, m = this.length; ++j < m; ) {
-      for (var group = this[j], i = group.length - 1, next = group[i], node; --i >= 0; ) {
-        if (node = group[i]) {
-          if (next && next !== node.nextSibling) next.parentNode.insertBefore(node, next);
-          next = node;
-        }
-      }
-    }
-    return this;
-  };
-  d3_selectionPrototype.sort = function(comparator) {
-    comparator = d3_selection_sortComparator.apply(this, arguments);
-    for (var j = -1, m = this.length; ++j < m; ) this[j].sort(comparator);
-    return this.order();
-  };
-  function d3_selection_sortComparator(comparator) {
-    if (!arguments.length) comparator = d3_ascending;
-    return function(a, b) {
-      return a && b ? comparator(a.__data__, b.__data__) : !a - !b;
-    };
-  }
-  d3_selectionPrototype.each = function(callback) {
-    return d3_selection_each(this, function(node, i, j) {
-      callback.call(node, node.__data__, i, j);
-    });
-  };
-  function d3_selection_each(groups, callback) {
-    for (var j = 0, m = groups.length; j < m; j++) {
-      for (var group = groups[j], i = 0, n = group.length, node; i < n; i++) {
-        if (node = group[i]) callback(node, i, j);
-      }
-    }
-    return groups;
-  }
-  d3_selectionPrototype.call = function(callback) {
-    var args = d3_array(arguments);
-    callback.apply(args[0] = this, args);
-    return this;
-  };
-  d3_selectionPrototype.empty = function() {
-    return !this.node();
-  };
-  d3_selectionPrototype.node = function() {
-    for (var j = 0, m = this.length; j < m; j++) {
-      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
-        var node = group[i];
-        if (node) return node;
-      }
-    }
-    return null;
-  };
-  d3_selectionPrototype.size = function() {
-    var n = 0;
-    d3_selection_each(this, function() {
-      ++n;
-    });
-    return n;
-  };
-  function d3_selection_enter(selection) {
-    d3_subclass(selection, d3_selection_enterPrototype);
-    return selection;
-  }
-  var d3_selection_enterPrototype = [];
-  d3.selection.enter = d3_selection_enter;
-  d3.selection.enter.prototype = d3_selection_enterPrototype;
-  d3_selection_enterPrototype.append = d3_selectionPrototype.append;
-  d3_selection_enterPrototype.empty = d3_selectionPrototype.empty;
-  d3_selection_enterPrototype.node = d3_selectionPrototype.node;
-  d3_selection_enterPrototype.call = d3_selectionPrototype.call;
-  d3_selection_enterPrototype.size = d3_selectionPrototype.size;
-  d3_selection_enterPrototype.select = function(selector) {
-    var subgroups = [], subgroup, subnode, upgroup, group, node;
-    for (var j = -1, m = this.length; ++j < m; ) {
-      upgroup = (group = this[j]).update;
-      subgroups.push(subgroup = []);
-      subgroup.parentNode = group.parentNode;
-      for (var i = -1, n = group.length; ++i < n; ) {
-        if (node = group[i]) {
-          subgroup.push(upgroup[i] = subnode = selector.call(group.parentNode, node.__data__, i, j));
-          subnode.__data__ = node.__data__;
-        } else {
-          subgroup.push(null);
-        }
-      }
-    }
-    return d3_selection(subgroups);
-  };
-  d3_selection_enterPrototype.insert = function(name, before) {
-    if (arguments.length < 2) before = d3_selection_enterInsertBefore(this);
-    return d3_selectionPrototype.insert.call(this, name, before);
-  };
-  function d3_selection_enterInsertBefore(enter) {
-    var i0, j0;
-    return function(d, i, j) {
-      var group = enter[j].update, n = group.length, node;
-      if (j != j0) j0 = j, i0 = 0;
-      if (i >= i0) i0 = i + 1;
-      while (!(node = group[i0]) && ++i0 < n) ;
-      return node;
-    };
-  }
-  d3.select = function(node) {
-    var group;
-    if (typeof node === "string") {
-      group = [ d3_select(node, d3_document) ];
-      group.parentNode = d3_document.documentElement;
-    } else {
-      group = [ node ];
-      group.parentNode = d3_documentElement(node);
-    }
-    return d3_selection([ group ]);
-  };
-  d3.selectAll = function(nodes) {
-    var group;
-    if (typeof nodes === "string") {
-      group = d3_array(d3_selectAll(nodes, d3_document));
-      group.parentNode = d3_document.documentElement;
-    } else {
-      group = nodes;
-      group.parentNode = null;
-    }
-    return d3_selection([ group ]);
-  };
-  d3_selectionPrototype.on = function(type, listener, capture) {
-    var n = arguments.length;
-    if (n < 3) {
-      if (typeof type !== "string") {
-        if (n < 2) listener = false;
-        for (capture in type) this.each(d3_selection_on(capture, type[capture], listener));
-        return this;
-      }
-      if (n < 2) return (n = this.node()["__on" + type]) && n._;
-      capture = false;
-    }
-    return this.each(d3_selection_on(type, listener, capture));
-  };
-  function d3_selection_on(type, listener, capture) {
-    var name = "__on" + type, i = type.indexOf("."), wrap = d3_selection_onListener;
-    if (i > 0) type = type.slice(0, i);
-    var filter = d3_selection_onFilters.get(type);
-    if (filter) type = filter, wrap = d3_selection_onFilter;
-    function onRemove() {
-      var l = this[name];
-      if (l) {
-        this.removeEventListener(type, l, l.$);
-        delete this[name];
-      }
-    }
-    function onAdd() {
-      var l = wrap(listener, d3_array(arguments));
-      onRemove.call(this);
-      this.addEventListener(type, this[name] = l, l.$ = capture);
-      l._ = listener;
-    }
-    function removeAll() {
-      var re = new RegExp("^__on([^.]+)" + d3.requote(type) + "$"), match;
-      for (var name in this) {
-        if (match = name.match(re)) {
-          var l = this[name];
-          this.removeEventListener(match[1], l, l.$);
-          delete this[name];
-        }
-      }
-    }
-    return i ? listener ? onAdd : onRemove : listener ? d3_noop : removeAll;
-  }
-  var d3_selection_onFilters = d3.map({
-    mouseenter: "mouseover",
-    mouseleave: "mouseout"
-  });
-  if (d3_document) {
-    d3_selection_onFilters.forEach(function(k) {
-      if ("on" + k in d3_document) d3_selection_onFilters.remove(k);
-    });
-  }
-  function d3_selection_onListener(listener, argumentz) {
-    return function(e) {
-      var o = d3.event;
-      d3.event = e;
-      argumentz[0] = this.__data__;
-      try {
-        listener.apply(this, argumentz);
-      } finally {
-        d3.event = o;
-      }
-    };
-  }
-  function d3_selection_onFilter(listener, argumentz) {
-    var l = d3_selection_onListener(listener, argumentz);
-    return function(e) {
-      var target = this, related = e.relatedTarget;
-      if (!related || related !== target && !(related.compareDocumentPosition(target) & 8)) {
-        l.call(target, e);
-      }
-    };
-  }
-  var d3_event_dragSelect, d3_event_dragId = 0;
-  function d3_event_dragSuppress(node) {
-    var name = ".dragsuppress-" + ++d3_event_dragId, click = "click" + name, w = d3.select(d3_window(node)).on("touchmove" + name, d3_eventPreventDefault).on("dragstart" + name, d3_eventPreventDefault).on("selectstart" + name, d3_eventPreventDefault);
-    if (d3_event_dragSelect == null) {
-      d3_event_dragSelect = "onselectstart" in node ? false : d3_vendorSymbol(node.style, "userSelect");
-    }
-    if (d3_event_dragSelect) {
-      var style = d3_documentElement(node).style, select = style[d3_event_dragSelect];
-      style[d3_event_dragSelect] = "none";
-    }
-    return function(suppressClick) {
-      w.on(name, null);
-      if (d3_event_dragSelect) style[d3_event_dragSelect] = select;
-      if (suppressClick) {
-        var off = function() {
-          w.on(click, null);
-        };
-        w.on(click, function() {
-          d3_eventPreventDefault();
-          off();
-        }, true);
-        setTimeout(off, 0);
-      }
-    };
-  }
-  d3.mouse = function(container) {
-    return d3_mousePoint(container, d3_eventSource());
-  };
-  var d3_mouse_bug44083 = this.navigator && /WebKit/.test(this.navigator.userAgent) ? -1 : 0;
-  function d3_mousePoint(container, e) {
-    if (e.changedTouches) e = e.changedTouches[0];
-    var svg = container.ownerSVGElement || container;
-    if (svg.createSVGPoint) {
-      var point = svg.createSVGPoint();
-      if (d3_mouse_bug44083 < 0) {
-        var window = d3_window(container);
-        if (window.scrollX || window.scrollY) {
-          svg = d3.select("body").append("svg").style({
-            position: "absolute",
-            top: 0,
-            left: 0,
-            margin: 0,
-            padding: 0,
-            border: "none"
-          }, "important");
-          var ctm = svg[0][0].getScreenCTM();
-          d3_mouse_bug44083 = !(ctm.f || ctm.e);
-          svg.remove();
-        }
-      }
-      if (d3_mouse_bug44083) point.x = e.pageX, point.y = e.pageY; else point.x = e.clientX, 
-      point.y = e.clientY;
-      point = point.matrixTransform(container.getScreenCTM().inverse());
-      return [ point.x, point.y ];
-    }
-    var rect = container.getBoundingClientRect();
-    return [ e.clientX - rect.left - container.clientLeft, e.clientY - rect.top - container.clientTop ];
-  }
-  d3.touch = function(container, touches, identifier) {
-    if (arguments.length < 3) identifier = touches, touches = d3_eventSource().changedTouches;
-    if (touches) for (var i = 0, n = touches.length, touch; i < n; ++i) {
-      if ((touch = touches[i]).identifier === identifier) {
-        return d3_mousePoint(container, touch);
-      }
-    }
-  };
-  d3.behavior.drag = function() {
-    var event = d3_eventDispatch(drag, "drag", "dragstart", "dragend"), origin = null, mousedown = dragstart(d3_noop, d3.mouse, d3_window, "mousemove", "mouseup"), touchstart = dragstart(d3_behavior_dragTouchId, d3.touch, d3_identity, "touchmove", "touchend");
-    function drag() {
-      this.on("mousedown.drag", mousedown).on("touchstart.drag", touchstart);
-    }
-    function dragstart(id, position, subject, move, end) {
-      return function() {
-        var that = this, target = d3.event.target, parent = that.parentNode, dispatch = event.of(that, arguments), dragged = 0, dragId = id(), dragName = ".drag" + (dragId == null ? "" : "-" + dragId), dragOffset, dragSubject = d3.select(subject(target)).on(move + dragName, moved).on(end + dragName, ended), dragRestore = d3_event_dragSuppress(target), position0 = position(parent, dragId);
-        if (origin) {
-          dragOffset = origin.apply(that, arguments);
-          dragOffset = [ dragOffset.x - position0[0], dragOffset.y - position0[1] ];
-        } else {
-          dragOffset = [ 0, 0 ];
-        }
-        dispatch({
-          type: "dragstart"
-        });
-        function moved() {
-          var position1 = position(parent, dragId), dx, dy;
-          if (!position1) return;
-          dx = position1[0] - position0[0];
-          dy = position1[1] - position0[1];
-          dragged |= dx | dy;
-          position0 = position1;
-          dispatch({
-            type: "drag",
-            x: position1[0] + dragOffset[0],
-            y: position1[1] + dragOffset[1],
-            dx: dx,
-            dy: dy
-          });
-        }
-        function ended() {
-          if (!position(parent, dragId)) return;
-          dragSubject.on(move + dragName, null).on(end + dragName, null);
-          dragRestore(dragged && d3.event.target === target);
-          dispatch({
-            type: "dragend"
-          });
-        }
-      };
-    }
-    drag.origin = function(x) {
-      if (!arguments.length) return origin;
-      origin = x;
-      return drag;
-    };
-    return d3.rebind(drag, event, "on");
-  };
-  function d3_behavior_dragTouchId() {
-    return d3.event.changedTouches[0].identifier;
-  }
-  d3.touches = function(container, touches) {
-    if (arguments.length < 2) touches = d3_eventSource().touches;
-    return touches ? d3_array(touches).map(function(touch) {
-      var point = d3_mousePoint(container, touch);
-      point.identifier = touch.identifier;
-      return point;
-    }) : [];
-  };
-  var ε = 1e-6, ε2 = ε * ε, π = Math.PI, τ = 2 * π, τε = τ - ε, halfπ = π / 2, d3_radians = π / 180, d3_degrees = 180 / π;
-  function d3_sgn(x) {
-    return x > 0 ? 1 : x < 0 ? -1 : 0;
-  }
-  function d3_cross2d(a, b, c) {
-    return (b[0] - a[0]) * (c[1] - a[1]) - (b[1] - a[1]) * (c[0] - a[0]);
-  }
-  function d3_acos(x) {
-    return x > 1 ? 0 : x < -1 ? π : Math.acos(x);
-  }
-  function d3_asin(x) {
-    return x > 1 ? halfπ : x < -1 ? -halfπ : Math.asin(x);
-  }
-  function d3_sinh(x) {
-    return ((x = Math.exp(x)) - 1 / x) / 2;
-  }
-  function d3_cosh(x) {
-    return ((x = Math.exp(x)) + 1 / x) / 2;
-  }
-  function d3_tanh(x) {
-    return ((x = Math.exp(2 * x)) - 1) / (x + 1);
-  }
-  function d3_haversin(x) {
-    return (x = Math.sin(x / 2)) * x;
-  }
-  var ρ = Math.SQRT2, ρ2 = 2, ρ4 = 4;
-  d3.interpolateZoom = function(p0, p1) {
-    var ux0 = p0[0], uy0 = p0[1], w0 = p0[2], ux1 = p1[0], uy1 = p1[1], w1 = p1[2];
-    var dx = ux1 - ux0, dy = uy1 - uy0, d2 = dx * dx + dy * dy, d1 = Math.sqrt(d2), b0 = (w1 * w1 - w0 * w0 + ρ4 * d2) / (2 * w0 * ρ2 * d1), b1 = (w1 * w1 - w0 * w0 - ρ4 * d2) / (2 * w1 * ρ2 * d1), r0 = Math.log(Math.sqrt(b0 * b0 + 1) - b0), r1 = Math.log(Math.sqrt(b1 * b1 + 1) - b1), dr = r1 - r0, S = (dr || Math.log(w1 / w0)) / ρ;
-    function interpolate(t) {
-      var s = t * S;
-      if (dr) {
-        var coshr0 = d3_cosh(r0), u = w0 / (ρ2 * d1) * (coshr0 * d3_tanh(ρ * s + r0) - d3_sinh(r0));
-        return [ ux0 + u * dx, uy0 + u * dy, w0 * coshr0 / d3_cosh(ρ * s + r0) ];
-      }
-      return [ ux0 + t * dx, uy0 + t * dy, w0 * Math.exp(ρ * s) ];
-    }
-    interpolate.duration = S * 1e3;
-    return interpolate;
-  };
-  d3.behavior.zoom = function() {
-    var view = {
-      x: 0,
-      y: 0,
-      k: 1
-    }, translate0, center0, center, size = [ 960, 500 ], scaleExtent = d3_behavior_zoomInfinity, duration = 250, zooming = 0, mousedown = "mousedown.zoom", mousemove = "mousemove.zoom", mouseup = "mouseup.zoom", mousewheelTimer, touchstart = "touchstart.zoom", touchtime, event = d3_eventDispatch(zoom, "zoomstart", "zoom", "zoomend"), x0, x1, y0, y1;
-    if (!d3_behavior_zoomWheel) {
-      d3_behavior_zoomWheel = "onwheel" in d3_document ? (d3_behavior_zoomDelta = function() {
-        return -d3.event.deltaY * (d3.event.deltaMode ? 120 : 1);
-      }, "wheel") : "onmousewheel" in d3_document ? (d3_behavior_zoomDelta = function() {
-        return d3.event.wheelDelta;
-      }, "mousewheel") : (d3_behavior_zoomDelta = function() {
-        return -d3.event.detail;
-      }, "MozMousePixelScroll");
-    }
-    function zoom(g) {
-      g.on(mousedown, mousedowned).on(d3_behavior_zoomWheel + ".zoom", mousewheeled).on("dblclick.zoom", dblclicked).on(touchstart, touchstarted);
-    }
-    zoom.event = function(g) {
-      g.each(function() {
-        var dispatch = event.of(this, arguments), view1 = view;
-        if (d3_transitionInheritId) {
-          d3.select(this).transition().each("start.zoom", function() {
-            view = this.__chart__ || {
-              x: 0,
-              y: 0,
-              k: 1
-            };
-            zoomstarted(dispatch);
-          }).tween("zoom:zoom", function() {
-            var dx = size[0], dy = size[1], cx = center0 ? center0[0] : dx / 2, cy = center0 ? center0[1] : dy / 2, i = d3.interpolateZoom([ (cx - view.x) / view.k, (cy - view.y) / view.k, dx / view.k ], [ (cx - view1.x) / view1.k, (cy - view1.y) / view1.k, dx / view1.k ]);
-            return function(t) {
-              var l = i(t), k = dx / l[2];
-              this.__chart__ = view = {
-                x: cx - l[0] * k,
-                y: cy - l[1] * k,
-                k: k
-              };
-              zoomed(dispatch);
-            };
-          }).each("interrupt.zoom", function() {
-            zoomended(dispatch);
-          }).each("end.zoom", function() {
-            zoomended(dispatch);
-          });
-        } else {
-          this.__chart__ = view;
-          zoomstarted(dispatch);
-          zoomed(dispatch);
-          zoomended(dispatch);
-        }
-      });
-    };
-    zoom.translate = function(_) {
-      if (!arguments.length) return [ view.x, view.y ];
-      view = {
-        x: +_[0],
-        y: +_[1],
-        k: view.k
-      };
-      rescale();
-      return zoom;
-    };
-    zoom.scale = function(_) {
-      if (!arguments.length) return view.k;
-      view = {
-        x: view.x,
-        y: view.y,
-        k: +_
-      };
-      rescale();
-      return zoom;
-    };
-    zoom.scaleExtent = function(_) {
-      if (!arguments.length) return scaleExtent;
-      scaleExtent = _ == null ? d3_behavior_zoomInfinity : [ +_[0], +_[1] ];
-      return zoom;
-    };
-    zoom.center = function(_) {
-      if (!arguments.length) return center;
-      center = _ && [ +_[0], +_[1] ];
-      return zoom;
-    };
-    zoom.size = function(_) {
-      if (!arguments.length) return size;
-      size = _ && [ +_[0], +_[1] ];
-      return zoom;
-    };
-    zoom.duration = function(_) {
-      if (!arguments.length) return duration;
-      duration = +_;
-      return zoom;
-    };
-    zoom.x = function(z) {
-      if (!arguments.length) return x1;
-      x1 = z;
-      x0 = z.copy();
-      view = {
-        x: 0,
-        y: 0,
-        k: 1
-      };
-      return zoom;
-    };
-    zoom.y = function(z) {
-      if (!arguments.length) return y1;
-      y1 = z;
-      y0 = z.copy();
-      view = {
-        x: 0,
-        y: 0,
-        k: 1
-      };
-      return zoom;
-    };
-    function location(p) {
-      return [ (p[0] - view.x) / view.k, (p[1] - view.y) / view.k ];
-    }
-    function point(l) {
-      return [ l[0] * view.k + view.x, l[1] * view.k + view.y ];
-    }
-    function scaleTo(s) {
-      view.k = Math.max(scaleExtent[0], Math.min(scaleExtent[1], s));
-    }
-    function translateTo(p, l) {
-      l = point(l);
-      view.x += p[0] - l[0];
-      view.y += p[1] - l[1];
-    }
-    function zoomTo(that, p, l, k) {
-      that.__chart__ = {
-        x: view.x,
-        y: view.y,
-        k: view.k
-      };
-      scaleTo(Math.pow(2, k));
-      translateTo(center0 = p, l);
-      that = d3.select(that);
-      if (duration > 0) that = that.transition().duration(duration);
-      that.call(zoom.event);
-    }
-    function rescale() {
-      if (x1) x1.domain(x0.range().map(function(x) {
-        return (x - view.x) / view.k;
-      }).map(x0.invert));
-      if (y1) y1.domain(y0.range().map(function(y) {
-        return (y - view.y) / view.k;
-      }).map(y0.invert));
-    }
-    function zoomstarted(dispatch) {
-      if (!zooming++) dispatch({
-        type: "zoomstart"
-      });
-    }
-    function zoomed(dispatch) {
-      rescale();
-      dispatch({
-        type: "zoom",
-        scale: view.k,
-        translate: [ view.x, view.y ]
-      });
-    }
-    function zoomended(dispatch) {
-      if (!--zooming) dispatch({
-        type: "zoomend"
-      });
-      center0 = null;
-    }
-    function mousedowned() {
-      var that = this, target = d3.event.target, dispatch = event.of(that, arguments), dragged = 0, subject = d3.select(d3_window(that)).on(mousemove, moved).on(mouseup, ended), location0 = location(d3.mouse(that)), dragRestore = d3_event_dragSuppress(that);
-      d3_selection_interrupt.call(that);
-      zoomstarted(dispatch);
-      function moved() {
-        dragged = 1;
-        translateTo(d3.mouse(that), location0);
-        zoomed(dispatch);
-      }
-      function ended() {
-        subject.on(mousemove, null).on(mouseup, null);
-        dragRestore(dragged && d3.event.target === target);
-        zoomended(dispatch);
-      }
-    }
-    function touchstarted() {
-      var that = this, dispatch = event.of(that, arguments), locations0 = {}, distance0 = 0, scale0, zoomName = ".zoom-" + d3.event.changedTouches[0].identifier, touchmove = "touchmove" + zoomName, touchend = "touchend" + zoomName, targets = [], subject = d3.select(that), dragRestore = d3_event_dragSuppress(that);
-      started();
-      zoomstarted(dispatch);
-      subject.on(mousedown, null).on(touchstart, started);
-      function relocate() {
-        var touches = d3.touches(that);
-        scale0 = view.k;
-        touches.forEach(function(t) {
-          if (t.identifier in locations0) locations0[t.identifier] = location(t);
-        });
-        return touches;
-      }
-      function started() {
-        var target = d3.event.target;
-        d3.select(target).on(touchmove, moved).on(touchend, ended);
-        targets.push(target);
-        var changed = d3.event.changedTouches;
-        for (var i = 0, n = changed.length; i < n; ++i) {
-          locations0[changed[i].identifier] = null;
-        }
-        var touches = relocate(), now = Date.now();
-        if (touches.length === 1) {
-          if (now - touchtime < 500) {
-            var p = touches[0];
-            zoomTo(that, p, locations0[p.identifier], Math.floor(Math.log(view.k) / Math.LN2) + 1);
-            d3_eventPreventDefault();
-          }
-          touchtime = now;
-        } else if (touches.length > 1) {
-          var p = touches[0], q = touches[1], dx = p[0] - q[0], dy = p[1] - q[1];
-          distance0 = dx * dx + dy * dy;
-        }
-      }
-      function moved() {
-        var touches = d3.touches(that), p0, l0, p1, l1;
-        d3_selection_interrupt.call(that);
-        for (var i = 0, n = touches.length; i < n; ++i, l1 = null) {
-          p1 = touches[i];
-          if (l1 = locations0[p1.identifier]) {
-            if (l0) break;
-            p0 = p1, l0 = l1;
-          }
-        }
-        if (l1) {
-          var distance1 = (distance1 = p1[0] - p0[0]) * distance1 + (distance1 = p1[1] - p0[1]) * distance1, scale1 = distance0 && Math.sqrt(distance1 / distance0);
-          p0 = [ (p0[0] + p1[0]) / 2, (p0[1] + p1[1]) / 2 ];
-          l0 = [ (l0[0] + l1[0]) / 2, (l0[1] + l1[1]) / 2 ];
-          scaleTo(scale1 * scale0);
-        }
-        touchtime = null;
-        translateTo(p0, l0);
-        zoomed(dispatch);
-      }
-      function ended() {
-        if (d3.event.touches.length) {
-          var changed = d3.event.changedTouches;
-          for (var i = 0, n = changed.length; i < n; ++i) {
-            delete locations0[changed[i].identifier];
-          }
-          for (var identifier in locations0) {
-            return void relocate();
-          }
-        }
-        d3.selectAll(targets).on(zoomName, null);
-        subject.on(mousedown, mousedowned).on(touchstart, touchstarted);
-        dragRestore();
-        zoomended(dispatch);
-      }
-    }
-    function mousewheeled() {
-      var dispatch = event.of(this, arguments);
-      if (mousewheelTimer) clearTimeout(mousewheelTimer); else translate0 = location(center0 = center || d3.mouse(this)), 
-      d3_selection_interrupt.call(this), zoomstarted(dispatch);
-      mousewheelTimer = setTimeout(function() {
-        mousewheelTimer = null;
-        zoomended(dispatch);
-      }, 50);
-      d3_eventPreventDefault();
-      scaleTo(Math.pow(2, d3_behavior_zoomDelta() * .002) * view.k);
-      translateTo(center0, translate0);
-      zoomed(dispatch);
-    }
-    function dblclicked() {
-      var p = d3.mouse(this), k = Math.log(view.k) / Math.LN2;
-      zoomTo(this, p, location(p), d3.event.shiftKey ? Math.ceil(k) - 1 : Math.floor(k) + 1);
-    }
-    return d3.rebind(zoom, event, "on");
-  };
-  var d3_behavior_zoomInfinity = [ 0, Infinity ], d3_behavior_zoomDelta, d3_behavior_zoomWheel;
-  d3.color = d3_color;
-  function d3_color() {}
-  d3_color.prototype.toString = function() {
-    return this.rgb() + "";
-  };
-  d3.hsl = d3_hsl;
-  function d3_hsl(h, s, l) {
-    return this instanceof d3_hsl ? void (this.h = +h, this.s = +s, this.l = +l) : arguments.length < 2 ? h instanceof d3_hsl ? new d3_hsl(h.h, h.s, h.l) : d3_rgb_parse("" + h, d3_rgb_hsl, d3_hsl) : new d3_hsl(h, s, l);
-  }
-  var d3_hslPrototype = d3_hsl.prototype = new d3_color();
-  d3_hslPrototype.brighter = function(k) {
-    k = Math.pow(.7, arguments.length ? k : 1);
-    return new d3_hsl(this.h, this.s, this.l / k);
-  };
-  d3_hslPrototype.darker = function(k) {
-    k = Math.pow(.7, arguments.length ? k : 1);
-    return new d3_hsl(this.h, this.s, k * this.l);
-  };
-  d3_hslPrototype.rgb = function() {
-    return d3_hsl_rgb(this.h, this.s, this.l);
-  };
-  function d3_hsl_rgb(h, s, l) {
-    var m1, m2;
-    h = isNaN(h) ? 0 : (h %= 360) < 0 ? h + 360 : h;
-    s = isNaN(s) ? 0 : s < 0 ? 0 : s > 1 ? 1 : s;
-    l = l < 0 ? 0 : l > 1 ? 1 : l;
-    m2 = l <= .5 ? l * (1 + s) : l + s - l * s;
-    m1 = 2 * l - m2;
-    function v(h) {
-      if (h > 360) h -= 360; else if (h < 0) h += 360;
-      if (h < 60) return m1 + (m2 - m1) * h / 60;
-      if (h < 180) return m2;
-      if (h < 240) return m1 + (m2 - m1) * (240 - h) / 60;
-      return m1;
-    }
-    function vv(h) {
-      return Math.round(v(h) * 255);
-    }
-    return new d3_rgb(vv(h + 120), vv(h), vv(h - 120));
-  }
-  d3.hcl = d3_hcl;
-  function d3_hcl(h, c, l) {
-    return this instanceof d3_hcl ? void (this.h = +h, this.c = +c, this.l = +l) : arguments.length < 2 ? h instanceof d3_hcl ? new d3_hcl(h.h, h.c, h.l) : h instanceof d3_lab ? d3_lab_hcl(h.l, h.a, h.b) : d3_lab_hcl((h = d3_rgb_lab((h = d3.rgb(h)).r, h.g, h.b)).l, h.a, h.b) : new d3_hcl(h, c, l);
-  }
-  var d3_hclPrototype = d3_hcl.prototype = new d3_color();
-  d3_hclPrototype.brighter = function(k) {
-    return new d3_hcl(this.h, this.c, Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)));
-  };
-  d3_hclPrototype.darker = function(k) {
-    return new d3_hcl(this.h, this.c, Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)));
-  };
-  d3_hclPrototype.rgb = function() {
-    return d3_hcl_lab(this.h, this.c, this.l).rgb();
-  };
-  function d3_hcl_lab(h, c, l) {
-    if (isNaN(h)) h = 0;
-    if (isNaN(c)) c = 0;
-    return new d3_lab(l, Math.cos(h *= d3_radians) * c, Math.sin(h) * c);
-  }
-  d3.lab = d3_lab;
-  function d3_lab(l, a, b) {
-    return this instanceof d3_lab ? void (this.l = +l, this.a = +a, this.b = +b) : arguments.length < 2 ? l instanceof d3_lab ? new d3_lab(l.l, l.a, l.b) : l instanceof d3_hcl ? d3_hcl_lab(l.h, l.c, l.l) : d3_rgb_lab((l = d3_rgb(l)).r, l.g, l.b) : new d3_lab(l, a, b);
-  }
-  var d3_lab_K = 18;
-  var d3_lab_X = .95047, d3_lab_Y = 1, d3_lab_Z = 1.08883;
-  var d3_labPrototype = d3_lab.prototype = new d3_color();
-  d3_labPrototype.brighter = function(k) {
-    return new d3_lab(Math.min(100, this.l + d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
-  };
-  d3_labPrototype.darker = function(k) {
-    return new d3_lab(Math.max(0, this.l - d3_lab_K * (arguments.length ? k : 1)), this.a, this.b);
-  };
-  d3_labPrototype.rgb = function() {
-    return d3_lab_rgb(this.l, this.a, this.b);
-  };
-  function d3_lab_rgb(l, a, b) {
-    var y = (l + 16) / 116, x = y + a / 500, z = y - b / 200;
-    x = d3_lab_xyz(x) * d3_lab_X;
-    y = d3_lab_xyz(y) * d3_lab_Y;
-    z = d3_lab_xyz(z) * d3_lab_Z;
-    return new d3_rgb(d3_xyz_rgb(3.2404542 * x - 1.5371385 * y - .4985314 * z), d3_xyz_rgb(-.969266 * x + 1.8760108 * y + .041556 * z), d3_xyz_rgb(.0556434 * x - .2040259 * y + 1.0572252 * z));
-  }
-  function d3_lab_hcl(l, a, b) {
-    return l > 0 ? new d3_hcl(Math.atan2(b, a) * d3_degrees, Math.sqrt(a * a + b * b), l) : new d3_hcl(NaN, NaN, l);
-  }
-  function d3_lab_xyz(x) {
-    return x > .206893034 ? x * x * x : (x - 4 / 29) / 7.787037;
-  }
-  function d3_xyz_lab(x) {
-    return x > .008856 ? Math.pow(x, 1 / 3) : 7.787037 * x + 4 / 29;
-  }
-  function d3_xyz_rgb(r) {
-    return Math.round(255 * (r <= .00304 ? 12.92 * r : 1.055 * Math.pow(r, 1 / 2.4) - .055));
-  }
-  d3.rgb = d3_rgb;
-  function d3_rgb(r, g, b) {
-    return this instanceof d3_rgb ? void (this.r = ~~r, this.g = ~~g, this.b = ~~b) : arguments.length < 2 ? r instanceof d3_rgb ? new d3_rgb(r.r, r.g, r.b) : d3_rgb_parse("" + r, d3_rgb, d3_hsl_rgb) : new d3_rgb(r, g, b);
-  }
-  function d3_rgbNumber(value) {
-    return new d3_rgb(value >> 16, value >> 8 & 255, value & 255);
-  }
-  function d3_rgbString(value) {
-    return d3_rgbNumber(value) + "";
-  }
-  var d3_rgbPrototype = d3_rgb.prototype = new d3_color();
-  d3_rgbPrototype.brighter = function(k) {
-    k = Math.pow(.7, arguments.length ? k : 1);
-    var r = this.r, g = this.g, b = this.b, i = 30;
-    if (!r && !g && !b) return new d3_rgb(i, i, i);
-    if (r && r < i) r = i;
-    if (g && g < i) g = i;
-    if (b && b < i) b = i;
-    return new d3_rgb(Math.min(255, r / k), Math.min(255, g / k), Math.min(255, b / k));
-  };
-  d3_rgbPrototype.darker = function(k) {
-    k = Math.pow(.7, arguments.length ? k : 1);
-    return new d3_rgb(k * this.r, k * this.g, k * this.b);
-  };
-  d3_rgbPrototype.hsl = function() {
-    return d3_rgb_hsl(this.r, this.g, this.b);
-  };
-  d3_rgbPrototype.toString = function() {
-    return "#" + d3_rgb_hex(this.r) + d3_rgb_hex(this.g) + d3_rgb_hex(this.b);
-  };
-  function d3_rgb_hex(v) {
-    return v < 16 ? "0" + Math.max(0, v).toString(16) : Math.min(255, v).toString(16);
-  }
-  function d3_rgb_parse(format, rgb, hsl) {
-    var r = 0, g = 0, b = 0, m1, m2, color;
-    m1 = /([a-z]+)\((.*)\)/i.exec(format);
-    if (m1) {
-      m2 = m1[2].split(",");
-      switch (m1[1]) {
-       case "hsl":
-        {
-          return hsl(parseFloat(m2[0]), parseFloat(m2[1]) / 100, parseFloat(m2[2]) / 100);
-        }
-
-       case "rgb":
-        {
-          return rgb(d3_rgb_parseNumber(m2[0]), d3_rgb_parseNumber(m2[1]), d3_rgb_parseNumber(m2[2]));
-        }
-      }
-    }
-    if (color = d3_rgb_names.get(format.toLowerCase())) {
-      return rgb(color.r, color.g, color.b);
-    }
-    if (format != null && format.charAt(0) === "#" && !isNaN(color = parseInt(format.slice(1), 16))) {
-      if (format.length === 4) {
-        r = (color & 3840) >> 4;
-        r = r >> 4 | r;
-        g = color & 240;
-        g = g >> 4 | g;
-        b = color & 15;
-        b = b << 4 | b;
-      } else if (format.length === 7) {
-        r = (color & 16711680) >> 16;
-        g = (color & 65280) >> 8;
-        b = color & 255;
-      }
-    }
-    return rgb(r, g, b);
-  }
-  function d3_rgb_hsl(r, g, b) {
-    var min = Math.min(r /= 255, g /= 255, b /= 255), max = Math.max(r, g, b), d = max - min, h, s, l = (max + min) / 2;
-    if (d) {
-      s = l < .5 ? d / (max + min) : d / (2 - max - min);
-      if (r == max) h = (g - b) / d + (g < b ? 6 : 0); else if (g == max) h = (b - r) / d + 2; else h = (r - g) / d + 4;
-      h *= 60;
-    } else {
-      h = NaN;
-      s = l > 0 && l < 1 ? 0 : h;
-    }
-    return new d3_hsl(h, s, l);
-  }
-  function d3_rgb_lab(r, g, b) {
-    r = d3_rgb_xyz(r);
-    g = d3_rgb_xyz(g);
-    b = d3_rgb_xyz(b);
-    var x = d3_xyz_lab((.4124564 * r + .3575761 * g + .1804375 * b) / d3_lab_X), y = d3_xyz_lab((.2126729 * r + .7151522 * g + .072175 * b) / d3_lab_Y), z = d3_xyz_lab((.0193339 * r + .119192 * g + .9503041 * b) / d3_lab_Z);
-    return d3_lab(116 * y - 16, 500 * (x - y), 200 * (y - z));
-  }
-  function d3_rgb_xyz(r) {
-    return (r /= 255) <= .04045 ? r / 12.92 : Math.pow((r + .055) / 1.055, 2.4);
-  }
-  function d3_rgb_parseNumber(c) {
-    var f = parseFloat(c);
-    return c.charAt(c.length - 1) === "%" ? Math.round(f * 2.55) : f;
-  }
-  var d3_rgb_names = d3.map({
-    aliceblue: 15792383,
-    antiquewhite: 16444375,
-    aqua: 65535,
-    aquamarine: 8388564,
-    azure: 15794175,
-    beige: 16119260,
-    bisque: 16770244,
-    black: 0,
-    blanchedalmond: 16772045,
-    blue: 255,
-    blueviolet: 9055202,
-    brown: 10824234,
-    burlywood: 14596231,
-    cadetblue: 6266528,
-    chartreuse: 8388352,
-    chocolate: 13789470,
-    coral: 16744272,
-    cornflowerblue: 6591981,
-    cornsilk: 16775388,
-    crimson: 14423100,
-    cyan: 65535,
-    darkblue: 139,
-    darkcyan: 35723,
-    darkgoldenrod: 12092939,
-    darkgray: 11119017,
-    darkgreen: 25600,
-    darkgrey: 11119017,
-    darkkhaki: 12433259,
-    darkmagenta: 9109643,
-    darkolivegreen: 5597999,
-    darkorange: 16747520,
-    darkorchid: 10040012,
-    darkred: 9109504,
-    darksalmon: 15308410,
-    darkseagreen: 9419919,
-    darkslateblue: 4734347,
-    darkslategray: 3100495,
-    darkslategrey: 3100495,
-    darkturquoise: 52945,
-    darkviolet: 9699539,
-    deeppink: 16716947,
-    deepskyblue: 49151,
-    dimgray: 6908265,
-    dimgrey: 6908265,
-    dodgerblue: 2003199,
-    firebrick: 11674146,
-    floralwhite: 16775920,
-    forestgreen: 2263842,
-    fuchsia: 16711935,
-    gainsboro: 14474460,
-    ghostwhite: 16316671,
-    gold: 16766720,
-    goldenrod: 14329120,
-    gray: 8421504,
-    green: 32768,
-    greenyellow: 11403055,
-    grey: 8421504,
-    honeydew: 15794160,
-    hotpink: 16738740,
-    indianred: 13458524,
-    indigo: 4915330,
-    ivory: 16777200,
-    khaki: 15787660,
-    lavender: 15132410,
-    lavenderblush: 16773365,
-    lawngreen: 8190976,
-    lemonchiffon: 16775885,
-    lightblue: 11393254,
-    lightcoral: 15761536,
-    lightcyan: 14745599,
-    lightgoldenrodyellow: 16448210,
-    lightgray: 13882323,
-    lightgreen: 9498256,
-    lightgrey: 13882323,
-    lightpink: 16758465,
-    lightsalmon: 16752762,
-    lightseagreen: 2142890,
-    lightskyblue: 8900346,
-    lightslategray: 7833753,
-    lightslategrey: 7833753,
-    lightsteelblue: 11584734,
-    lightyellow: 16777184,
-    lime: 65280,
-    limegreen: 3329330,
-    linen: 16445670,
-    magenta: 16711935,
-    maroon: 8388608,
-    mediumaquamarine: 6737322,
-    mediumblue: 205,
-    mediumorchid: 12211667,
-    mediumpurple: 9662683,
-    mediumseagreen: 3978097,
-    mediumslateblue: 8087790,
-    mediumspringgreen: 64154,
-    mediumturquoise: 4772300,
-    mediumvioletred: 13047173,
-    midnightblue: 1644912,
-    mintcream: 16121850,
-    mistyrose: 16770273,
-    moccasin: 16770229,
-    navajowhite: 16768685,
-    navy: 128,
-    oldlace: 16643558,
-    olive: 8421376,
-    olivedrab: 7048739,
-    orange: 16753920,
-    orangered: 16729344,
-    orchid: 14315734,
-    palegoldenrod: 15657130,
-    palegreen: 10025880,
-    paleturquoise: 11529966,
-    palevioletred: 14381203,
-    papayawhip: 16773077,
-    peachpuff: 16767673,
-    peru: 13468991,
-    pink: 16761035,
-    plum: 14524637,
-    powderblue: 11591910,
-    purple: 8388736,
-    rebeccapurple: 6697881,
-    red: 16711680,
-    rosybrown: 12357519,
-    royalblue: 4286945,
-    saddlebrown: 9127187,
-    salmon: 16416882,
-    sandybrown: 16032864,
-    seagreen: 3050327,
-    seashell: 16774638,
-    sienna: 10506797,
-    silver: 12632256,
-    skyblue: 8900331,
-    slateblue: 6970061,
-    slategray: 7372944,
-    slategrey: 7372944,
-    snow: 16775930,
-    springgreen: 65407,
-    steelblue: 4620980,
-    tan: 13808780,
-    teal: 32896,
-    thistle: 14204888,
-    tomato: 16737095,
-    turquoise: 4251856,
-    violet: 15631086,
-    wheat: 16113331,
-    white: 16777215,
-    whitesmoke: 16119285,
-    yellow: 16776960,
-    yellowgreen: 10145074
-  });
-  d3_rgb_names.forEach(function(key, value) {
-    d3_rgb_names.set(key, d3_rgbNumber(value));
-  });
-  function d3_functor(v) {
-    return typeof v === "function" ? v : function() {
-      return v;
-    };
-  }
-  d3.functor = d3_functor;
-  d3.xhr = d3_xhrType(d3_identity);
-  function d3_xhrType(response) {
-    return function(url, mimeType, callback) {
-      if (arguments.length === 2 && typeof mimeType === "function") callback = mimeType, 
-      mimeType = null;
-      return d3_xhr(url, mimeType, response, callback);
-    };
-  }
-  function d3_xhr(url, mimeType, response, callback) {
-    var xhr = {}, dispatch = d3.dispatch("beforesend", "progress", "load", "error"), headers = {}, request = new XMLHttpRequest(), responseType = null;
-    if (this.XDomainRequest && !("withCredentials" in request) && /^(http(s)?:)?\/\//.test(url)) request = new XDomainRequest();
-    "onload" in request ? request.onload = request.onerror = respond : request.onreadystatechange = function() {
-      request.readyState > 3 && respond();
-    };
-    function respond() {
-      var status = request.status, result;
-      if (!status && d3_xhrHasResponse(request) || status >= 200 && status < 300 || status === 304) {
-        try {
-          result = response.call(xhr, request);
-        } catch (e) {
-          dispatch.error.call(xhr, e);
-          return;
-        }
-        dispatch.load.call(xhr, result);
-      } else {
-        dispatch.error.call(xhr, request);
-      }
-    }
-    request.onprogress = function(event) {
-      var o = d3.event;
-      d3.event = event;
-      try {
-        dispatch.progress.call(xhr, request);
-      } finally {
-        d3.event = o;
-      }
-    };
-    xhr.header = function(name, value) {
-      name = (name + "").toLowerCase();
-      if (arguments.length < 2) return headers[name];
-      if (value == null) delete headers[name]; else headers[name] = value + "";
-      return xhr;
-    };
-    xhr.mimeType = function(value) {
-      if (!arguments.length) return mimeType;
-      mimeType = value == null ? null : value + "";
-      return xhr;
-    };
-    xhr.responseType = function(value) {
-      if (!arguments.length) return responseType;
-      responseType = value;
-      return xhr;
-    };
-    xhr.response = function(value) {
-      response = value;
-      return xhr;
-    };
-    [ "get", "post" ].forEach(function(method) {
-      xhr[method] = function() {
-        return xhr.send.apply(xhr, [ method ].concat(d3_array(arguments)));
-      };
-    });
-    xhr.send = function(method, data, callback) {
-      if (arguments.length === 2 && typeof data === "function") callback = data, data = null;
-      request.open(method, url, true);
-      if (mimeType != null && !("accept" in headers)) headers["accept"] = mimeType + ",*/*";
-      if (request.setRequestHeader) for (var name in headers) request.setRequestHeader(name, headers[name]);
-      if (mimeType != null && request.overrideMimeType) request.overrideMimeType(mimeType);
-      if (responseType != null) request.responseType = responseType;
-      if (callback != null) xhr.on("error", callback).on("load", function(request) {
-        callback(null, request);
-      });
-      dispatch.beforesend.call(xhr, request);
-      request.send(data == null ? null : data);
-      return xhr;
-    };
-    xhr.abort = function() {
-      request.abort();
-      return xhr;
-    };
-    d3.rebind(xhr, dispatch, "on");
-    return callback == null ? xhr : xhr.get(d3_xhr_fixCallback(callback));
-  }
-  function d3_xhr_fixCallback(callback) {
-    return callback.length === 1 ? function(error, request) {
-      callback(error == null ? request : null);
-    } : callback;
-  }
-  function d3_xhrHasResponse(request) {
-    var type = request.responseType;
-    return type && type !== "text" ? request.response : request.responseText;
-  }
-  d3.dsv = function(delimiter, mimeType) {
-    var reFormat = new RegExp('["' + delimiter + "\n]"), delimiterCode = delimiter.charCodeAt(0);
-    function dsv(url, row, callback) {
-      if (arguments.length < 3) callback = row, row = null;
-      var xhr = d3_xhr(url, mimeType, row == null ? response : typedResponse(row), callback);
-      xhr.row = function(_) {
-        return arguments.length ? xhr.response((row = _) == null ? response : typedResponse(_)) : row;
-      };
-      return xhr;
-    }
-    function response(request) {
-      return dsv.parse(request.responseText);
-    }
-    function typedResponse(f) {
-      return function(request) {
-        return dsv.parse(request.responseText, f);
-      };
-    }
-    dsv.parse = function(text, f) {
-      var o;
-      return dsv.parseRows(text, function(row, i) {
-        if (o) return o(row, i - 1);
-        var a = new Function("d", "return {" + row.map(function(name, i) {
-          return JSON.stringify(name) + ": d[" + i + "]";
-        }).join(",") + "}");
-        o = f ? function(row, i) {
-          return f(a(row), i);
-        } : a;
-      });
-    };
-    dsv.parseRows = function(text, f) {
-      var EOL = {}, EOF = {}, rows = [], N = text.length, I = 0, n = 0, t, eol;
-      function token() {
-        if (I >= N) return EOF;
-        if (eol) return eol = false, EOL;
-        var j = I;
-        if (text.charCodeAt(j) === 34) {
-          var i = j;
-          while (i++ < N) {
-            if (text.charCodeAt(i) === 34) {
-              if (text.charCodeAt(i + 1) !== 34) break;
-              ++i;
-            }
-          }
-          I = i + 2;
-          var c = text.charCodeAt(i + 1);
-          if (c === 13) {
-            eol = true;
-            if (text.charCodeAt(i + 2) === 10) ++I;
-          } else if (c === 10) {
-            eol = true;
-          }
-          return text.slice(j + 1, i).replace(/""/g, '"');
-        }
-        while (I < N) {
-          var c = text.charCodeAt(I++), k = 1;
-          if (c === 10) eol = true; else if (c === 13) {
-            eol = true;
-            if (text.charCodeAt(I) === 10) ++I, ++k;
-          } else if (c !== delimiterCode) continue;
-          return text.slice(j, I - k);
-        }
-        return text.slice(j);
-      }
-      while ((t = token()) !== EOF) {
-        var a = [];
-        while (t !== EOL && t !== EOF) {
-          a.push(t);
-          t = token();
-        }
-        if (f && (a = f(a, n++)) == null) continue;
-        rows.push(a);
-      }
-      return rows;
-    };
-    dsv.format = function(rows) {
-      if (Array.isArray(rows[0])) return dsv.formatRows(rows);
-      var fieldSet = new d3_Set(), fields = [];
-      rows.forEach(function(row) {
-        for (var field in row) {
-          if (!fieldSet.has(field)) {
-            fields.push(fieldSet.add(field));
-          }
-        }
-      });
-      return [ fields.map(formatValue).join(delimiter) ].concat(rows.map(function(row) {
-        return fields.map(function(field) {
-          return formatValue(row[field]);
-        }).join(delimiter);
-      })).join("\n");
-    };
-    dsv.formatRows = function(rows) {
-      return rows.map(formatRow).join("\n");
-    };
-    function formatRow(row) {
-      return row.map(formatValue).join(delimiter);
-    }
-    function formatValue(text) {
-      return reFormat.test(text) ? '"' + text.replace(/\"/g, '""') + '"' : text;
-    }
-    return dsv;
-  };
-  d3.csv = d3.dsv(",", "text/csv");
-  d3.tsv = d3.dsv("	", "text/tab-separated-values");
-  var d3_timer_queueHead, d3_timer_queueTail, d3_timer_interval, d3_timer_timeout, d3_timer_active, d3_timer_frame = this[d3_vendorSymbol(this, "requestAnimationFrame")] || function(callback) {
-    setTimeout(callback, 17);
-  };
-  d3.timer = function(callback, delay, then) {
-    var n = arguments.length;
-    if (n < 2) delay = 0;
-    if (n < 3) then = Date.now();
-    var time = then + delay, timer = {
-      c: callback,
-      t: time,
-      f: false,
-      n: null
-    };
-    if (d3_timer_queueTail) d3_timer_queueTail.n = timer; else d3_timer_queueHead = timer;
-    d3_timer_queueTail = timer;
-    if (!d3_timer_interval) {
-      d3_timer_timeout = clearTimeout(d3_timer_timeout);
-      d3_timer_interval = 1;
-      d3_timer_frame(d3_timer_step);
-    }
-  };
-  function d3_timer_step() {
-    var now = d3_timer_mark(), delay = d3_timer_sweep() - now;
-    if (delay > 24) {
-      if (isFinite(delay)) {
-        clearTimeout(d3_timer_timeout);
-        d3_timer_timeout = setTimeout(d3_timer_step, delay);
-      }
-      d3_timer_interval = 0;
-    } else {
-      d3_timer_interval = 1;
-      d3_timer_frame(d3_timer_step);
-    }
-  }
-  d3.timer.flush = function() {
-    d3_timer_mark();
-    d3_timer_sweep();
-  };
-  function d3_timer_mark() {
-    var now = Date.now();
-    d3_timer_active = d3_timer_queueHead;
-    while (d3_timer_active) {
-      if (now >= d3_timer_active.t) d3_timer_active.f = d3_timer_active.c(now - d3_timer_active.t);
-      d3_timer_active = d3_timer_active.n;
-    }
-    return now;
-  }
-  function d3_timer_sweep() {
-    var t0, t1 = d3_timer_queueHead, time = Infinity;
-    while (t1) {
-      if (t1.f) {
-        t1 = t0 ? t0.n = t1.n : d3_timer_queueHead = t1.n;
-      } else {
-        if (t1.t < time) time = t1.t;
-        t1 = (t0 = t1).n;
-      }
-    }
-    d3_timer_queueTail = t0;
-    return time;
-  }
-  function d3_format_precision(x, p) {
-    return p - (x ? Math.ceil(Math.log(x) / Math.LN10) : 1);
-  }
-  d3.round = function(x, n) {
-    return n ? Math.round(x * (n = Math.pow(10, n))) / n : Math.round(x);
-  };
-  var d3_formatPrefixes = [ "y", "z", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "E", "Z", "Y" ].map(d3_formatPrefix);
-  d3.formatPrefix = function(value, precision) {
-    var i = 0;
-    if (value) {
-      if (value < 0) value *= -1;
-      if (precision) value = d3.round(value, d3_format_precision(value, precision));
-      i = 1 + Math.floor(1e-12 + Math.log(value) / Math.LN10);
-      i = Math.max(-24, Math.min(24, Math.floor((i - 1) / 3) * 3));
-    }
-    return d3_formatPrefixes[8 + i / 3];
-  };
-  function d3_formatPrefix(d, i) {
-    var k = Math.pow(10, abs(8 - i) * 3);
-    return {
-      scale: i > 8 ? function(d) {
-        return d / k;
-      } : function(d) {
-        return d * k;
-      },
-      symbol: d
-    };
-  }
-  function d3_locale_numberFormat(locale) {
-    var locale_decimal = locale.decimal, locale_thousands = locale.thousands, locale_grouping = locale.grouping, locale_currency = locale.currency, formatGroup = locale_grouping && locale_thousands ? function(value, width) {
-      var i = value.length, t = [], j = 0, g = locale_grouping[0], length = 0;
-      while (i > 0 && g > 0) {
-        if (length + g + 1 > width) g = Math.max(1, width - length);
-        t.push(value.substring(i -= g, i + g));
-        if ((length += g + 1) > width) break;
-        g = locale_grouping[j = (j + 1) % locale_grouping.length];
-      }
-      return t.reverse().join(locale_thousands);
-    } : d3_identity;
-    return function(specifier) {
-      var match = d3_format_re.exec(specifier), fill = match[1] || " ", align = match[2] || ">", sign = match[3] || "-", symbol = match[4] || "", zfill = match[5], width = +match[6], comma = match[7], precision = match[8], type = match[9], scale = 1, prefix = "", suffix = "", integer = false, exponent = true;
-      if (precision) precision = +precision.substring(1);
-      if (zfill || fill === "0" && align === "=") {
-        zfill = fill = "0";
-        align = "=";
-      }
-      switch (type) {
-       case "n":
-        comma = true;
-        type = "g";
-        break;
-
-       case "%":
-        scale = 100;
-        suffix = "%";
-        type = "f";
-        break;
-
-       case "p":
-        scale = 100;
-        suffix = "%";
-        type = "r";
-        break;
-
-       case "b":
-       case "o":
-       case "x":
-       case "X":
-        if (symbol === "#") prefix = "0" + type.toLowerCase();
-
-       case "c":
-        exponent = false;
-
-       case "d":
-        integer = true;
-        precision = 0;
-        break;
-
-       case "s":
-        scale = -1;
-        type = "r";
-        break;
-      }
-      if (symbol === "$") prefix = locale_currency[0], suffix = locale_currency[1];
-      if (type == "r" && !precision) type = "g";
-      if (precision != null) {
-        if (type == "g") precision = Math.max(1, Math.min(21, precision)); else if (type == "e" || type == "f") precision = Math.max(0, Math.min(20, precision));
-      }
-      type = d3_format_types.get(type) || d3_format_typeDefault;
-      var zcomma = zfill && comma;
-      return function(value) {
-        var fullSuffix = suffix;
-        if (integer && value % 1) return "";
-        var negative = value < 0 || value === 0 && 1 / value < 0 ? (value = -value, "-") : sign === "-" ? "" : sign;
-        if (scale < 0) {
-          var unit = d3.formatPrefix(value, precision);
-          value = unit.scale(value);
-          fullSuffix = unit.symbol + suffix;
-        } else {
-          value *= scale;
-        }
-        value = type(value, precision);
-        var i = value.lastIndexOf("."), before, after;
-        if (i < 0) {
-          var j = exponent ? value.lastIndexOf("e") : -1;
-          if (j < 0) before = value, after = ""; else before = value.substring(0, j), after = value.substring(j);
-        } else {
-          before = value.substring(0, i);
-          after = locale_decimal + value.substring(i + 1);
-        }
-        if (!zfill && comma) before = formatGroup(before, Infinity);
-        var length = prefix.length + before.length + after.length + (zcomma ? 0 : negative.length), padding = length < width ? new Array(length = width - length + 1).join(fill) : "";
-        if (zcomma) before = formatGroup(padding + before, padding.length ? width - after.length : Infinity);
-        negative += prefix;
-        value = before + after;
-        return (align === "<" ? negative + value + padding : align === ">" ? padding + negative + value : align === "^" ? padding.substring(0, length >>= 1) + negative + value + padding.substring(length) : negative + (zcomma ? value : padding + value)) + fullSuffix;
-      };
-    };
-  }
-  var d3_format_re = /(?:([^{])?([<>=^]))?([+\- ])?([$#])?(0)?(\d+)?(,)?(\.-?\d+)?([a-z%])?/i;
-  var d3_format_types = d3.map({
-    b: function(x) {
-      return x.toString(2);
-    },
-    c: function(x) {
-      return String.fromCharCode(x);
-    },
-    o: function(x) {
-      return x.toString(8);
-    },
-    x: function(x) {
-      return x.toString(16);
-    },
-    X: function(x) {
-      return x.toString(16).toUpperCase();
-    },
-    g: function(x, p) {
-      return x.toPrecision(p);
-    },
-    e: function(x, p) {
-      return x.toExponential(p);
-    },
-    f: function(x, p) {
-      return x.toFixed(p);
-    },
-    r: function(x, p) {
-      return (x = d3.round(x, d3_format_precision(x, p))).toFixed(Math.max(0, Math.min(20, d3_format_precision(x * (1 + 1e-15), p))));
-    }
-  });
-  function d3_format_typeDefault(x) {
-    return x + "";
-  }
-  var d3_time = d3.time = {}, d3_date = Date;
-  function d3_date_utc() {
-    this._ = new Date(arguments.length > 1 ? Date.UTC.apply(this, arguments) : arguments[0]);
-  }
-  d3_date_utc.prototype = {
-    getDate: function() {
-      return this._.getUTCDate();
-    },
-    getDay: function() {
-      return this._.getUTCDay();
-    },
-    getFullYear: function() {
-      return this._.getUTCFullYear();
-    },
-    getHours: function() {
-      return this._.getUTCHours();
-    },
-    getMilliseconds: function() {
-      return this._.getUTCMilliseconds();
-    },
-    getMinutes: function() {
-      return this._.getUTCMinutes();
-    },
-    getMonth: function() {
-      return this._.getUTCMonth();
-    },
-    getSeconds: function() {
-      return this._.getUTCSeconds();
-    },
-    getTime: function() {
-      return this._.getTime();
-    },
-    getTimezoneOffset: function() {
-      return 0;
-    },
-    valueOf: function() {
-      return this._.valueOf();
-    },
-    setDate: function() {
-      d3_time_prototype.setUTCDate.apply(this._, arguments);
-    },
-    setDay: function() {
-      d3_time_prototype.setUTCDay.apply(this._, arguments);
-    },
-    setFullYear: function() {
-      d3_time_prototype.setUTCFullYear.apply(this._, arguments);
-    },
-    setHours: function() {
-      d3_time_prototype.setUTCHours.apply(this._, arguments);
-    },
-    setMilliseconds: function() {
-      d3_time_prototype.setUTCMilliseconds.apply(this._, arguments);
-    },
-    setMinutes: function() {
-      d3_time_prototype.setUTCMinutes.apply(this._, arguments);
-    },
-    setMonth: function() {
-      d3_time_prototype.setUTCMonth.apply(this._, arguments);
-    },
-    setSeconds: function() {
-      d3_time_prototype.setUTCSeconds.apply(this._, arguments);
-    },
-    setTime: function() {
-      d3_time_prototype.setTime.apply(this._, arguments);
-    }
-  };
-  var d3_time_prototype = Date.prototype;
-  function d3_time_interval(local, step, number) {
-    function round(date) {
-      var d0 = local(date), d1 = offset(d0, 1);
-      return date - d0 < d1 - date ? d0 : d1;
-    }
-    function ceil(date) {
-      step(date = local(new d3_date(date - 1)), 1);
-      return date;
-    }
-    function offset(date, k) {
-      step(date = new d3_date(+date), k);
-      return date;
-    }
-    function range(t0, t1, dt) {
-      var time = ceil(t0), times = [];
-      if (dt > 1) {
-        while (time < t1) {
-          if (!(number(time) % dt)) times.push(new Date(+time));
-          step(time, 1);
-        }
-      } else {
-        while (time < t1) times.push(new Date(+time)), step(time, 1);
-      }
-      return times;
-    }
-    function range_utc(t0, t1, dt) {
-      try {
-        d3_date = d3_date_utc;
-        var utc = new d3_date_utc();
-        utc._ = t0;
-        return range(utc, t1, dt);
-      } finally {
-        d3_date = Date;
-      }
-    }
-    local.floor = local;
-    local.round = round;
-    local.ceil = ceil;
-    local.offset = offset;
-    local.range = range;
-    var utc = local.utc = d3_time_interval_utc(local);
-    utc.floor = utc;
-    utc.round = d3_time_interval_utc(round);
-    utc.ceil = d3_time_interval_utc(ceil);
-    utc.offset = d3_time_interval_utc(offset);
-    utc.range = range_utc;
-    return local;
-  }
-  function d3_time_interval_utc(method) {
-    return function(date, k) {
-      try {
-        d3_date = d3_date_utc;
-        var utc = new d3_date_utc();
-        utc._ = date;
-        return method(utc, k)._;
-      } finally {
-        d3_date = Date;
-      }
-    };
-  }
-  d3_time.year = d3_time_interval(function(date) {
-    date = d3_time.day(date);
-    date.setMonth(0, 1);
-    return date;
-  }, function(date, offset) {
-    date.setFullYear(date.getFullYear() + offset);
-  }, function(date) {
-    return date.getFullYear();
-  });
-  d3_time.years = d3_time.year.range;
-  d3_time.years.utc = d3_time.year.utc.range;
-  d3_time.day = d3_time_interval(function(date) {
-    var day = new d3_date(2e3, 0);
-    day.setFullYear(date.getFullYear(), date.getMonth(), date.getDate());
-    return day;
-  }, function(date, offset) {
-    date.setDate(date.getDate() + offset);
-  }, function(date) {
-    return date.getDate() - 1;
-  });
-  d3_time.days = d3_time.day.range;
-  d3_time.days.utc = d3_time.day.utc.range;
-  d3_time.dayOfYear = function(date) {
-    var year = d3_time.year(date);
-    return Math.floor((date - year - (date.getTimezoneOffset() - year.getTimezoneOffset()) * 6e4) / 864e5);
-  };
-  [ "sunday", "monday", "tuesday", "wednesday", "thursday", "friday", "saturday" ].forEach(function(day, i) {
-    i = 7 - i;
-    var interval = d3_time[day] = d3_time_interval(function(date) {
-      (date = d3_time.day(date)).setDate(date.getDate() - (date.getDay() + i) % 7);
-      return date;
-    }, function(date, offset) {
-      date.setDate(date.getDate() + Math.floor(offset) * 7);
-    }, function(date) {
-      var day = d3_time.year(date).getDay();
-      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7) - (day !== i);
-    });
-    d3_time[day + "s"] = interval.range;
-    d3_time[day + "s"].utc = interval.utc.range;
-    d3_time[day + "OfYear"] = function(date) {
-      var day = d3_time.year(date).getDay();
-      return Math.floor((d3_time.dayOfYear(date) + (day + i) % 7) / 7);
-    };
-  });
-  d3_time.week = d3_time.sunday;
-  d3_time.weeks = d3_time.sunday.range;
-  d3_time.weeks.utc = d3_time.sunday.utc.range;
-  d3_time.weekOfYear = d3_time.sundayOfYear;
-  function d3_locale_timeFormat(locale) {
-    var locale_dateTime = locale.dateTime, locale_date = locale.date, locale_time = locale.time, locale_periods = locale.periods, locale_days = locale.days, locale_shortDays = locale.shortDays, locale_months = locale.months, locale_shortMonths = locale.shortMonths;
-    function d3_time_format(template) {
-      var n = template.length;
-      function format(date) {
-        var string = [], i = -1, j = 0, c, p, f;
-        while (++i < n) {
-          if (template.charCodeAt(i) === 37) {
-            string.push(template.slice(j, i));
-            if ((p = d3_time_formatPads[c = template.charAt(++i)]) != null) c = template.charAt(++i);
-            if (f = d3_time_formats[c]) c = f(date, p == null ? c === "e" ? " " : "0" : p);
-            string.push(c);
-            j = i + 1;
-          }
-        }
-        string.push(template.slice(j, i));
-        return string.join("");
-      }
-      format.parse = function(string) {
-        var d = {
-          y: 1900,
-          m: 0,
-          d: 1,
-          H: 0,
-          M: 0,
-          S: 0,
-          L: 0,
-          Z: null
-        }, i = d3_time_parse(d, template, string, 0);
-        if (i != string.length) return null;
-        if ("p" in d) d.H = d.H % 12 + d.p * 12;
-        var localZ = d.Z != null && d3_date !== d3_date_utc, date = new (localZ ? d3_date_utc : d3_date)();
-        if ("j" in d) date.setFullYear(d.y, 0, d.j); else if ("w" in d && ("W" in d || "U" in d)) {
-          date.setFullYear(d.y, 0, 1);
-          date.setFullYear(d.y, 0, "W" in d ? (d.w + 6) % 7 + d.W * 7 - (date.getDay() + 5) % 7 : d.w + d.U * 7 - (date.getDay() + 6) % 7);
-        } else date.setFullYear(d.y, d.m, d.d);
-        date.setHours(d.H + (d.Z / 100 | 0), d.M + d.Z % 100, d.S, d.L);
-        return localZ ? date._ : date;
-      };
-      format.toString = function() {
-        return template;
-      };
-      return format;
-    }
-    function d3_time_parse(date, template, string, j) {
-      var c, p, t, i = 0, n = template.length, m = string.length;
-      while (i < n) {
-        if (j >= m) return -1;
-        c = template.charCodeAt(i++);
-        if (c === 37) {
-          t = template.charAt(i++);
-          p = d3_time_parsers[t in d3_time_formatPads ? template.charAt(i++) : t];
-          if (!p || (j = p(date, string, j)) < 0) return -1;
-        } else if (c != string.charCodeAt(j++)) {
-          return -1;
-        }
-      }
-      return j;
-    }
-    d3_time_format.utc = function(template) {
-      var local = d3_time_format(template);
-      function format(date) {
-        try {
-          d3_date = d3_date_utc;
-          var utc = new d3_date();
-          utc._ = date;
-          return local(utc);
-        } finally {
-          d3_date = Date;
-        }
-      }
-      format.parse = function(string) {
-        try {
-          d3_date = d3_date_utc;
-          var date = local.parse(string);
-          return date && date._;
-        } finally {
-          d3_date = Date;
-        }
-      };
-      format.toString = local.toString;
-      return format;
-    };
-    d3_time_format.multi = d3_time_format.utc.multi = d3_time_formatMulti;
-    var d3_time_periodLookup = d3.map(), d3_time_dayRe = d3_time_formatRe(locale_days), d3_time_dayLookup = d3_time_formatLookup(locale_days), d3_time_dayAbbrevRe = d3_time_formatRe(locale_shortDays), d3_time_dayAbbrevLookup = d3_time_formatLookup(locale_shortDays), d3_time_monthRe = d3_time_formatRe(locale_months), d3_time_monthLookup = d3_time_formatLookup(locale_months), d3_time_monthAbbrevRe = d3_time_formatRe(locale_shortMonths), d3_time_monthAbbrevLookup = d3_time_formatLookup(locale_shortMonths);
-    locale_periods.forEach(function(p, i) {
-      d3_time_periodLookup.set(p.toLowerCase(), i);
-    });
-    var d3_time_formats = {
-      a: function(d) {
-        return locale_shortDays[d.getDay()];
-      },
-      A: function(d) {
-        return locale_days[d.getDay()];
-      },
-      b: function(d) {
-        return locale_shortMonths[d.getMonth()];
-      },
-      B: function(d) {
-        return locale_months[d.getMonth()];
-      },
-      c: d3_time_format(locale_dateTime),
-      d: function(d, p) {
-        return d3_time_formatPad(d.getDate(), p, 2);
-      },
-      e: function(d, p) {
-        return d3_time_formatPad(d.getDate(), p, 2);
-      },
-      H: function(d, p) {
-        return d3_time_formatPad(d.getHours(), p, 2);
-      },
-      I: function(d, p) {
-        return d3_time_formatPad(d.getHours() % 12 || 12, p, 2);
-      },
-      j: function(d, p) {
-        return d3_time_formatPad(1 + d3_time.dayOfYear(d), p, 3);
-      },
-      L: function(d, p) {
-        return d3_time_formatPad(d.getMilliseconds(), p, 3);
-      },
-      m: function(d, p) {
-        return d3_time_formatPad(d.getMonth() + 1, p, 2);
-      },
-      M: function(d, p) {
-        return d3_time_formatPad(d.getMinutes(), p, 2);
-      },
-      p: function(d) {
-        return locale_periods[+(d.getHours() >= 12)];
-      },
-      S: function(d, p) {
-        return d3_time_formatPad(d.getSeconds(), p, 2);
-      },
-      U: function(d, p) {
-        return d3_time_formatPad(d3_time.sundayOfYear(d), p, 2);
-      },
-      w: function(d) {
-        return d.getDay();
-      },
-      W: function(d, p) {
-        return d3_time_formatPad(d3_time.mondayOfYear(d), p, 2);
-      },
-      x: d3_time_format(locale_date),
-      X: d3_time_format(locale_time),
-      y: function(d, p) {
-        return d3_time_formatPad(d.getFullYear() % 100, p, 2);
-      },
-      Y: function(d, p) {
-        return d3_time_formatPad(d.getFullYear() % 1e4, p, 4);
-      },
-      Z: d3_time_zone,
-      "%": function() {
-        return "%";
-      }
-    };
-    var d3_time_parsers = {
-      a: d3_time_parseWeekdayAbbrev,
-      A: d3_time_parseWeekday,
-      b: d3_time_parseMonthAbbrev,
-      B: d3_time_parseMonth,
-      c: d3_time_parseLocaleFull,
-      d: d3_time_parseDay,
-      e: d3_time_parseDay,
-      H: d3_time_parseHour24,
-      I: d3_time_parseHour24,
-      j: d3_time_parseDayOfYear,
-      L: d3_time_parseMilliseconds,
-      m: d3_time_parseMonthNumber,
-      M: d3_time_parseMinutes,
-      p: d3_time_parseAmPm,
-      S: d3_time_parseSeconds,
-      U: d3_time_parseWeekNumberSunday,
-      w: d3_time_parseWeekdayNumber,
-      W: d3_time_parseWeekNumberMonday,
-      x: d3_time_parseLocaleDate,
-      X: d3_time_parseLocaleTime,
-      y: d3_time_parseYear,
-      Y: d3_time_parseFullYear,
-      Z: d3_time_parseZone,
-      "%": d3_time_parseLiteralPercent
-    };
-    function d3_time_parseWeekdayAbbrev(date, string, i) {
-      d3_time_dayAbbrevRe.lastIndex = 0;
-      var n = d3_time_dayAbbrevRe.exec(string.slice(i));
-      return n ? (date.w = d3_time_dayAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
-    }
-    function d3_time_parseWeekday(date, string, i) {
-      d3_time_dayRe.lastIndex = 0;
-      var n = d3_time_dayRe.exec(string.slice(i));
-      return n ? (date.w = d3_time_dayLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
-    }
-    function d3_time_parseMonthAbbrev(date, string, i) {
-      d3_time_monthAbbrevRe.lastIndex = 0;
-      var n = d3_time_monthAbbrevRe.exec(string.slice(i));
-      return n ? (date.m = d3_time_monthAbbrevLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
-    }
-    function d3_time_parseMonth(date, string, i) {
-      d3_time_monthRe.lastIndex = 0;
-      var n = d3_time_monthRe.exec(string.slice(i));
-      return n ? (date.m = d3_time_monthLookup.get(n[0].toLowerCase()), i + n[0].length) : -1;
-    }
-    function d3_time_parseLocaleFull(date, string, i) {
-      return d3_time_parse(date, d3_time_formats.c.toString(), string, i);
-    }
-    function d3_time_parseLocaleDate(date, string, i) {
-      return d3_time_parse(date, d3_time_formats.x.toString(), string, i);
-    }
-    function d3_time_parseLocaleTime(date, string, i) {
-      return d3_time_parse(date, d3_time_formats.X.toString(), string, i);
-    }
-    function d3_time_parseAmPm(date, string, i) {
-      var n = d3_time_periodLookup.get(string.slice(i, i += 2).toLowerCase());
-      return n == null ? -1 : (date.p = n, i);
-    }
-    return d3_time_format;
-  }
-  var d3_time_formatPads = {
-    "-": "",
-    _: " ",
-    "0": "0"
-  }, d3_time_numberRe = /^\s*\d+/, d3_time_percentRe = /^%/;
-  function d3_time_formatPad(value, fill, width) {
-    var sign = value < 0 ? "-" : "", string = (sign ? -value : value) + "", length = string.length;
-    return sign + (length < width ? new Array(width - length + 1).join(fill) + string : string);
-  }
-  function d3_time_formatRe(names) {
-    return new RegExp("^(?:" + names.map(d3.requote).join("|") + ")", "i");
-  }
-  function d3_time_formatLookup(names) {
-    var map = new d3_Map(), i = -1, n = names.length;
-    while (++i < n) map.set(names[i].toLowerCase(), i);
-    return map;
-  }
-  function d3_time_parseWeekdayNumber(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.slice(i, i + 1));
-    return n ? (date.w = +n[0], i + n[0].length) : -1;
-  }
-  function d3_time_parseWeekNumberSunday(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.slice(i));
-    return n ? (date.U = +n[0], i + n[0].length) : -1;
-  }
-  function d3_time_parseWeekNumberMonday(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.slice(i));
-    return n ? (date.W = +n[0], i + n[0].length) : -1;
-  }
-  function d3_time_parseFullYear(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.slice(i, i + 4));
-    return n ? (date.y = +n[0], i + n[0].length) : -1;
-  }
-  function d3_time_parseYear(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
-    return n ? (date.y = d3_time_expandYear(+n[0]), i + n[0].length) : -1;
-  }
-  function d3_time_parseZone(date, string, i) {
-    return /^[+-]\d{4}$/.test(string = string.slice(i, i + 5)) ? (date.Z = -string, 
-    i + 5) : -1;
-  }
-  function d3_time_expandYear(d) {
-    return d + (d > 68 ? 1900 : 2e3);
-  }
-  function d3_time_parseMonthNumber(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
-    return n ? (date.m = n[0] - 1, i + n[0].length) : -1;
-  }
-  function d3_time_parseDay(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
-    return n ? (date.d = +n[0], i + n[0].length) : -1;
-  }
-  function d3_time_parseDayOfYear(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
-    return n ? (date.j = +n[0], i + n[0].length) : -1;
-  }
-  function d3_time_parseHour24(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
-    return n ? (date.H = +n[0], i + n[0].length) : -1;
-  }
-  function d3_time_parseMinutes(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
-    return n ? (date.M = +n[0], i + n[0].length) : -1;
-  }
-  function d3_time_parseSeconds(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.slice(i, i + 2));
-    return n ? (date.S = +n[0], i + n[0].length) : -1;
-  }
-  function d3_time_parseMilliseconds(date, string, i) {
-    d3_time_numberRe.lastIndex = 0;
-    var n = d3_time_numberRe.exec(string.slice(i, i + 3));
-    return n ? (date.L = +n[0], i + n[0].length) : -1;
-  }
-  function d3_time_zone(d) {
-    var z = d.getTimezoneOffset(), zs = z > 0 ? "-" : "+", zh = abs(z) / 60 | 0, zm = abs(z) % 60;
-    return zs + d3_time_formatPad(zh, "0", 2) + d3_time_formatPad(zm, "0", 2);
-  }
-  function d3_time_parseLiteralPercent(date, string, i) {
-    d3_time_percentRe.lastIndex = 0;
-    var n = d3_time_percentRe.exec(string.slice(i, i + 1));
-    return n ? i + n[0].length : -1;
-  }
-  function d3_time_formatMulti(formats) {
-    var n = formats.length, i = -1;
-    while (++i < n) formats[i][0] = this(formats[i][0]);
-    return function(date) {
-      var i = 0, f = formats[i];
-      while (!f[1](date)) f = formats[++i];
-      return f[0](date);
-    };
-  }
-  d3.locale = function(locale) {
-    return {
-      numberFormat: d3_locale_numberFormat(locale),
-      timeFormat: d3_locale_timeFormat(locale)
-    };
-  };
-  var d3_locale_enUS = d3.locale({
-    decimal: ".",
-    thousands: ",",
-    grouping: [ 3 ],
-    currency: [ "$", "" ],
-    dateTime: "%a %b %e %X %Y",
-    date: "%m/%d/%Y",
-    time: "%H:%M:%S",
-    periods: [ "AM", "PM" ],
-    days: [ "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" ],
-    shortDays: [ "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" ],
-    months: [ "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" ],
-    shortMonths: [ "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" ]
-  });
-  d3.format = d3_locale_enUS.numberFormat;
-  d3.geo = {};
-  function d3_adder() {}
-  d3_adder.prototype = {
-    s: 0,
-    t: 0,
-    add: function(y) {
-      d3_adderSum(y, this.t, d3_adderTemp);
-      d3_adderSum(d3_adderTemp.s, this.s, this);
-      if (this.s) this.t += d3_adderTemp.t; else this.s = d3_adderTemp.t;
-    },
-    reset: function() {
-      this.s = this.t = 0;
-    },
-    valueOf: function() {
-      return this.s;
-    }
-  };
-  var d3_adderTemp = new d3_adder();
-  function d3_adderSum(a, b, o) {
-    var x = o.s = a + b, bv = x - a, av = x - bv;
-    o.t = a - av + (b - bv);
-  }
-  d3.geo.stream = function(object, listener) {
-    if (object && d3_geo_streamObjectType.hasOwnProperty(object.type)) {
-      d3_geo_streamObjectType[object.type](object, listener);
-    } else {
-      d3_geo_streamGeometry(object, listener);
-    }
-  };
-  function d3_geo_streamGeometry(geometry, listener) {
-    if (geometry && d3_geo_streamGeometryType.hasOwnProperty(geometry.type)) {
-      d3_geo_streamGeometryType[geometry.type](geometry, listener);
-    }
-  }
-  var d3_geo_streamObjectType = {
-    Feature: function(feature, listener) {
-      d3_geo_streamGeometry(feature.geometry, listener);
-    },
-    FeatureCollection: function(object, listener) {
-      var features = object.features, i = -1, n = features.length;
-      while (++i < n) d3_geo_streamGeometry(features[i].geometry, listener);
-    }
-  };
-  var d3_geo_streamGeometryType = {
-    Sphere: function(object, listener) {
-      listener.sphere();
-    },
-    Point: function(object, listener) {
-      object = object.coordinates;
-      listener.point(object[0], object[1], object[2]);
-    },
-    MultiPoint: function(object, listener) {
-      var coordinates = object.coordinates, i = -1, n = coordinates.length;
-      while (++i < n) object = coordinates[i], listener.point(object[0], object[1], object[2]);
-    },
-    LineString: function(object, listener) {
-      d3_geo_streamLine(object.coordinates, listener, 0);
-    },
-    MultiLineString: function(object, listener) {
-      var coordinates = object.coordinates, i = -1, n = coordinates.length;
-      while (++i < n) d3_geo_streamLine(coordinates[i], listener, 0);
-    },
-    Polygon: function(object, listener) {
-      d3_geo_streamPolygon(object.coordinates, listener);
-    },
-    MultiPolygon: function(object, listener) {
-      var coordinates = object.coordinates, i = -1, n = coordinates.length;
-      while (++i < n) d3_geo_streamPolygon(coordinates[i], listener);
-    },
-    GeometryCollection: function(object, listener) {
-      var geometries = object.geometries, i = -1, n = geometries.length;
-      while (++i < n) d3_geo_streamGeometry(geometries[i], listener);
-    }
-  };
-  function d3_geo_streamLine(coordinates, listener, closed) {
-    var i = -1, n = coordinates.length - closed, coordinate;
-    listener.lineStart();
-    while (++i < n) coordinate = coordinates[i], listener.point(coordinate[0], coordinate[1], coordinate[2]);
-    listener.lineEnd();
-  }
-  function d3_geo_streamPolygon(coordinates, listener) {
-    var i = -1, n = coordinates.length;
-    listener.polygonStart();
-    while (++i < n) d3_geo_streamLine(coordinates[i], listener, 1);
-    listener.polygonEnd();
-  }
-  d3.geo.area = function(object) {
-    d3_geo_areaSum = 0;
-    d3.geo.stream(object, d3_geo_area);
-    return d3_geo_areaSum;
-  };
-  var d3_geo_areaSum, d3_geo_areaRingSum = new d3_adder();
-  var d3_geo_area = {
-    sphere: function() {
-      d3_geo_areaSum += 4 * π;
-    },
-    point: d3_noop,
-    lineStart: d3_noop,
-    lineEnd: d3_noop,
-    polygonStart: function() {
-      d3_geo_areaRingSum.reset();
-      d3_geo_area.lineStart = d3_geo_areaRingStart;
-    },
-    polygonEnd: function() {
-      var area = 2 * d3_geo_areaRingSum;
-      d3_geo_areaSum += area < 0 ? 4 * π + area : area;
-      d3_geo_area.lineStart = d3_geo_area.lineEnd = d3_geo_area.point = d3_noop;
-    }
-  };
-  function d3_geo_areaRingStart() {
-    var λ00, φ00, λ0, cosφ0, sinφ0;
-    d3_geo_area.point = function(λ, φ) {
-      d3_geo_area.point = nextPoint;
-      λ0 = (λ00 = λ) * d3_radians, cosφ0 = Math.cos(φ = (φ00 = φ) * d3_radians / 2 + π / 4), 
-      sinφ0 = Math.sin(φ);
-    };
-    function nextPoint(λ, φ) {
-      λ *= d3_radians;
-      φ = φ * d3_radians / 2 + π / 4;
-      var dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, cosφ = Math.cos(φ), sinφ = Math.sin(φ), k = sinφ0 * sinφ, u = cosφ0 * cosφ + k * Math.cos(adλ), v = k * sdλ * Math.sin(adλ);
-      d3_geo_areaRingSum.add(Math.atan2(v, u));
-      λ0 = λ, cosφ0 = cosφ, sinφ0 = sinφ;
-    }
-    d3_geo_area.lineEnd = function() {
-      nextPoint(λ00, φ00);
-    };
-  }
-  function d3_geo_cartesian(spherical) {
-    var λ = spherical[0], φ = spherical[1], cosφ = Math.cos(φ);
-    return [ cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ) ];
-  }
-  function d3_geo_cartesianDot(a, b) {
-    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
-  }
-  function d3_geo_cartesianCross(a, b) {
-    return [ a[1] * b[2] - a[2] * b[1], a[2] * b[0] - a[0] * b[2], a[0] * b[1] - a[1] * b[0] ];
-  }
-  function d3_geo_cartesianAdd(a, b) {
-    a[0] += b[0];
-    a[1] += b[1];
-    a[2] += b[2];
-  }
-  function d3_geo_cartesianScale(vector, k) {
-    return [ vector[0] * k, vector[1] * k, vector[2] * k ];
-  }
-  function d3_geo_cartesianNormalize(d) {
-    var l = Math.sqrt(d[0] * d[0] + d[1] * d[1] + d[2] * d[2]);
-    d[0] /= l;
-    d[1] /= l;
-    d[2] /= l;
-  }
-  function d3_geo_spherical(cartesian) {
-    return [ Math.atan2(cartesian[1], cartesian[0]), d3_asin(cartesian[2]) ];
-  }
-  function d3_geo_sphericalEqual(a, b) {
-    return abs(a[0] - b[0]) < ε && abs(a[1] - b[1]) < ε;
-  }
-  d3.geo.bounds = function() {
-    var λ0, φ0, λ1, φ1, λ_, λ__, φ__, p0, dλSum, ranges, range;
-    var bound = {
-      point: point,
-      lineStart: lineStart,
-      lineEnd: lineEnd,
-      polygonStart: function() {
-        bound.point = ringPoint;
-        bound.lineStart = ringStart;
-        bound.lineEnd = ringEnd;
-        dλSum = 0;
-        d3_geo_area.polygonStart();
-      },
-      polygonEnd: function() {
-        d3_geo_area.polygonEnd();
-        bound.point = point;
-        bound.lineStart = lineStart;
-        bound.lineEnd = lineEnd;
-        if (d3_geo_areaRingSum < 0) λ0 = -(λ1 = 180), φ0 = -(φ1 = 90); else if (dλSum > ε) φ1 = 90; else if (dλSum < -ε) φ0 = -90;
-        range[0] = λ0, range[1] = λ1;
-      }
-    };
-    function point(λ, φ) {
-      ranges.push(range = [ λ0 = λ, λ1 = λ ]);
-      if (φ < φ0) φ0 = φ;
-      if (φ > φ1) φ1 = φ;
-    }
-    function linePoint(λ, φ) {
-      var p = d3_geo_cartesian([ λ * d3_radians, φ * d3_radians ]);
-      if (p0) {
-        var normal = d3_geo_cartesianCross(p0, p), equatorial = [ normal[1], -normal[0], 0 ], inflection = d3_geo_cartesianCross(equatorial, normal);
-        d3_geo_cartesianNormalize(inflection);
-        inflection = d3_geo_spherical(inflection);
-        var dλ = λ - λ_, s = dλ > 0 ? 1 : -1, λi = inflection[0] * d3_degrees * s, antimeridian = abs(dλ) > 180;
-        if (antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
-          var φi = inflection[1] * d3_degrees;
-          if (φi > φ1) φ1 = φi;
-        } else if (λi = (λi + 360) % 360 - 180, antimeridian ^ (s * λ_ < λi && λi < s * λ)) {
-          var φi = -inflection[1] * d3_degrees;
-          if (φi < φ0) φ0 = φi;
-        } else {
-          if (φ < φ0) φ0 = φ;
-          if (φ > φ1) φ1 = φ;
-        }
-        if (antimeridian) {
-          if (λ < λ_) {
-            if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
-          } else {
-            if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
-          }
-        } else {
-          if (λ1 >= λ0) {
-            if (λ < λ0) λ0 = λ;
-            if (λ > λ1) λ1 = λ;
-          } else {
-            if (λ > λ_) {
-              if (angle(λ0, λ) > angle(λ0, λ1)) λ1 = λ;
-            } else {
-              if (angle(λ, λ1) > angle(λ0, λ1)) λ0 = λ;
-            }
-          }
-        }
-      } else {
-        point(λ, φ);
-      }
-      p0 = p, λ_ = λ;
-    }
-    function lineStart() {
-      bound.point = linePoint;
-    }
-    function lineEnd() {
-      range[0] = λ0, range[1] = λ1;
-      bound.point = point;
-      p0 = null;
-    }
-    function ringPoint(λ, φ) {
-      if (p0) {
-        var dλ = λ - λ_;
-        dλSum += abs(dλ) > 180 ? dλ + (dλ > 0 ? 360 : -360) : dλ;
-      } else λ__ = λ, φ__ = φ;
-      d3_geo_area.point(λ, φ);
-      linePoint(λ, φ);
-    }
-    function ringStart() {
-      d3_geo_area.lineStart();
-    }
-    function ringEnd() {
-      ringPoint(λ__, φ__);
-      d3_geo_area.lineEnd();
-      if (abs(dλSum) > ε) λ0 = -(λ1 = 180);
-      range[0] = λ0, range[1] = λ1;
-      p0 = null;
-    }
-    function angle(λ0, λ1) {
-      return (λ1 -= λ0) < 0 ? λ1 + 360 : λ1;
-    }
-    function compareRanges(a, b) {
-      return a[0] - b[0];
-    }
-    function withinRange(x, range) {
-      return range[0] <= range[1] ? range[0] <= x && x <= range[1] : x < range[0] || range[1] < x;
-    }
-    return function(feature) {
-      φ1 = λ1 = -(λ0 = φ0 = Infinity);
-      ranges = [];
-      d3.geo.stream(feature, bound);
-      var n = ranges.length;
-      if (n) {
-        ranges.sort(compareRanges);
-        for (var i = 1, a = ranges[0], b, merged = [ a ]; i < n; ++i) {
-          b = ranges[i];
-          if (withinRange(b[0], a) || withinRange(b[1], a)) {
-            if (angle(a[0], b[1]) > angle(a[0], a[1])) a[1] = b[1];
-            if (angle(b[0], a[1]) > angle(a[0], a[1])) a[0] = b[0];
-          } else {
-            merged.push(a = b);
-          }
-        }
-        var best = -Infinity, dλ;
-        for (var n = merged.length - 1, i = 0, a = merged[n], b; i <= n; a = b, ++i) {
-          b = merged[i];
-          if ((dλ = angle(a[1], b[0])) > best) best = dλ, λ0 = b[0], λ1 = a[1];
-        }
-      }
-      ranges = range = null;
-      return λ0 === Infinity || φ0 === Infinity ? [ [ NaN, NaN ], [ NaN, NaN ] ] : [ [ λ0, φ0 ], [ λ1, φ1 ] ];
-    };
-  }();
-  d3.geo.centroid = function(object) {
-    d3_geo_centroidW0 = d3_geo_centroidW1 = d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
-    d3.geo.stream(object, d3_geo_centroid);
-    var x = d3_geo_centroidX2, y = d3_geo_centroidY2, z = d3_geo_centroidZ2, m = x * x + y * y + z * z;
-    if (m < ε2) {
-      x = d3_geo_centroidX1, y = d3_geo_centroidY1, z = d3_geo_centroidZ1;
-      if (d3_geo_centroidW1 < ε) x = d3_geo_centroidX0, y = d3_geo_centroidY0, z = d3_geo_centroidZ0;
-      m = x * x + y * y + z * z;
-      if (m < ε2) return [ NaN, NaN ];
-    }
-    return [ Math.atan2(y, x) * d3_degrees, d3_asin(z / Math.sqrt(m)) * d3_degrees ];
-  };
-  var d3_geo_centroidW0, d3_geo_centroidW1, d3_geo_centroidX0, d3_geo_centroidY0, d3_geo_centroidZ0, d3_geo_centroidX1, d3_geo_centroidY1, d3_geo_centroidZ1, d3_geo_centroidX2, d3_geo_centroidY2, d3_geo_centroidZ2;
-  var d3_geo_centroid = {
-    sphere: d3_noop,
-    point: d3_geo_centroidPoint,
-    lineStart: d3_geo_centroidLineStart,
-    lineEnd: d3_geo_centroidLineEnd,
-    polygonStart: function() {
-      d3_geo_centroid.lineStart = d3_geo_centroidRingStart;
-    },
-    polygonEnd: function() {
-      d3_geo_centroid.lineStart = d3_geo_centroidLineStart;
-    }
-  };
-  function d3_geo_centroidPoint(λ, φ) {
-    λ *= d3_radians;
-    var cosφ = Math.cos(φ *= d3_radians);
-    d3_geo_centroidPointXYZ(cosφ * Math.cos(λ), cosφ * Math.sin(λ), Math.sin(φ));
-  }
-  function d3_geo_centroidPointXYZ(x, y, z) {
-    ++d3_geo_centroidW0;
-    d3_geo_centroidX0 += (x - d3_geo_centroidX0) / d3_geo_centroidW0;
-    d3_geo_centroidY0 += (y - d3_geo_centroidY0) / d3_geo_centroidW0;
-    d3_geo_centroidZ0 += (z - d3_geo_centroidZ0) / d3_geo_centroidW0;
-  }
-  function d3_geo_centroidLineStart() {
-    var x0, y0, z0;
-    d3_geo_centroid.point = function(λ, φ) {
-      λ *= d3_radians;
-      var cosφ = Math.cos(φ *= d3_radians);
-      x0 = cosφ * Math.cos(λ);
-      y0 = cosφ * Math.sin(λ);
-      z0 = Math.sin(φ);
-      d3_geo_centroid.point = nextPoint;
-      d3_geo_centroidPointXYZ(x0, y0, z0);
-    };
-    function nextPoint(λ, φ) {
-      λ *= d3_radians;
-      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), w = Math.atan2(Math.sqrt((w = y0 * z - z0 * y) * w + (w = z0 * x - x0 * z) * w + (w = x0 * y - y0 * x) * w), x0 * x + y0 * y + z0 * z);
-      d3_geo_centroidW1 += w;
-      d3_geo_centroidX1 += w * (x0 + (x0 = x));
-      d3_geo_centroidY1 += w * (y0 + (y0 = y));
-      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
-      d3_geo_centroidPointXYZ(x0, y0, z0);
-    }
-  }
-  function d3_geo_centroidLineEnd() {
-    d3_geo_centroid.point = d3_geo_centroidPoint;
-  }
-  function d3_geo_centroidRingStart() {
-    var λ00, φ00, x0, y0, z0;
-    d3_geo_centroid.point = function(λ, φ) {
-      λ00 = λ, φ00 = φ;
-      d3_geo_centroid.point = nextPoint;
-      λ *= d3_radians;
-      var cosφ = Math.cos(φ *= d3_radians);
-      x0 = cosφ * Math.cos(λ);
-      y0 = cosφ * Math.sin(λ);
-      z0 = Math.sin(φ);
-      d3_geo_centroidPointXYZ(x0, y0, z0);
-    };
-    d3_geo_centroid.lineEnd = function() {
-      nextPoint(λ00, φ00);
-      d3_geo_centroid.lineEnd = d3_geo_centroidLineEnd;
-      d3_geo_centroid.point = d3_geo_centroidPoint;
-    };
-    function nextPoint(λ, φ) {
-      λ *= d3_radians;
-      var cosφ = Math.cos(φ *= d3_radians), x = cosφ * Math.cos(λ), y = cosφ * Math.sin(λ), z = Math.sin(φ), cx = y0 * z - z0 * y, cy = z0 * x - x0 * z, cz = x0 * y - y0 * x, m = Math.sqrt(cx * cx + cy * cy + cz * cz), u = x0 * x + y0 * y + z0 * z, v = m && -d3_acos(u) / m, w = Math.atan2(m, u);
-      d3_geo_centroidX2 += v * cx;
-      d3_geo_centroidY2 += v * cy;
-      d3_geo_centroidZ2 += v * cz;
-      d3_geo_centroidW1 += w;
-      d3_geo_centroidX1 += w * (x0 + (x0 = x));
-      d3_geo_centroidY1 += w * (y0 + (y0 = y));
-      d3_geo_centroidZ1 += w * (z0 + (z0 = z));
-      d3_geo_centroidPointXYZ(x0, y0, z0);
-    }
-  }
-  function d3_geo_compose(a, b) {
-    function compose(x, y) {
-      return x = a(x, y), b(x[0], x[1]);
-    }
-    if (a.invert && b.invert) compose.invert = function(x, y) {
-      return x = b.invert(x, y), x && a.invert(x[0], x[1]);
-    };
-    return compose;
-  }
-  function d3_true() {
-    return true;
-  }
-  function d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener) {
-    var subject = [], clip = [];
-    segments.forEach(function(segment) {
-      if ((n = segment.length - 1) <= 0) return;
-      var n, p0 = segment[0], p1 = segment[n];
-      if (d3_geo_sphericalEqual(p0, p1)) {
-        listener.lineStart();
-        for (var i = 0; i < n; ++i) listener.point((p0 = segment[i])[0], p0[1]);
-        listener.lineEnd();
-        return;
-      }
-      var a = new d3_geo_clipPolygonIntersection(p0, segment, null, true), b = new d3_geo_clipPolygonIntersection(p0, null, a, false);
-      a.o = b;
-      subject.push(a);
-      clip.push(b);
-      a = new d3_geo_clipPolygonIntersection(p1, segment, null, false);
-      b = new d3_geo_clipPolygonIntersection(p1, null, a, true);
-      a.o = b;
-      subject.push(a);
-      clip.push(b);
-    });
-    clip.sort(compare);
-    d3_geo_clipPolygonLinkCircular(subject);
-    d3_geo_clipPolygonLinkCircular(clip);
-    if (!subject.length) return;
-    for (var i = 0, entry = clipStartInside, n = clip.length; i < n; ++i) {
-      clip[i].e = entry = !entry;
-    }
-    var start = subject[0], points, point;
-    while (1) {
-      var current = start, isSubject = true;
-      while (current.v) if ((current = current.n) === start) return;
-      points = current.z;
-      listener.lineStart();
-      do {
-        current.v = current.o.v = true;
-        if (current.e) {
-          if (isSubject) {
-            for (var i = 0, n = points.length; i < n; ++i) listener.point((point = points[i])[0], point[1]);
-          } else {
-            interpolate(current.x, current.n.x, 1, listener);
-          }
-          current = current.n;
-        } else {
-          if (isSubject) {
-            points = current.p.z;
-            for (var i = points.length - 1; i >= 0; --i) listener.point((point = points[i])[0], point[1]);
-          } else {
-            interpolate(current.x, current.p.x, -1, listener);
-          }
-          current = current.p;
-        }
-        current = current.o;
-        points = current.z;
-        isSubject = !isSubject;
-      } while (!current.v);
-      listener.lineEnd();
-    }
-  }
-  function d3_geo_clipPolygonLinkCircular(array) {
-    if (!(n = array.length)) return;
-    var n, i = 0, a = array[0], b;
-    while (++i < n) {
-      a.n = b = array[i];
-      b.p = a;
-      a = b;
-    }
-    a.n = b = array[0];
-    b.p = a;
-  }
-  function d3_geo_clipPolygonIntersection(point, points, other, entry) {
-    this.x = point;
-    this.z = points;
-    this.o = other;
-    this.e = entry;
-    this.v = false;
-    this.n = this.p = null;
-  }
-  function d3_geo_clip(pointVisible, clipLine, interpolate, clipStart) {
-    return function(rotate, listener) {
-      var line = clipLine(listener), rotatedClipStart = rotate.invert(clipStart[0], clipStart[1]);
-      var clip = {
-        point: point,
-        lineStart: lineStart,
-        lineEnd: lineEnd,
-        polygonStart: function() {
-          clip.point = pointRing;
-          clip.lineStart = ringStart;
-          clip.lineEnd = ringEnd;
-          segments = [];
-          polygon = [];
-        },
-        polygonEnd: function() {
-          clip.point = point;
-          clip.lineStart = lineStart;
-          clip.lineEnd = lineEnd;
-          segments = d3.merge(segments);
-          var clipStartInside = d3_geo_pointInPolygon(rotatedClipStart, polygon);
-          if (segments.length) {
-            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
-            d3_geo_clipPolygon(segments, d3_geo_clipSort, clipStartInside, interpolate, listener);
-          } else if (clipStartInside) {
-            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
-            listener.lineStart();
-            interpolate(null, null, 1, listener);
-            listener.lineEnd();
-          }
-          if (polygonStarted) listener.polygonEnd(), polygonStarted = false;
-          segments = polygon = null;
-        },
-        sphere: function() {
-          listener.polygonStart();
-          listener.lineStart();
-          interpolate(null, null, 1, listener);
-          listener.lineEnd();
-          listener.polygonEnd();
-        }
-      };
-      function point(λ, φ) {
-        var point = rotate(λ, φ);
-        if (pointVisible(λ = point[0], φ = point[1])) listener.point(λ, φ);
-      }
-      function pointLine(λ, φ) {
-        var point = rotate(λ, φ);
-        line.point(point[0], point[1]);
-      }
-      function lineStart() {
-        clip.point = pointLine;
-        line.lineStart();
-      }
-      function lineEnd() {
-        clip.point = point;
-        line.lineEnd();
-      }
-      var segments;
-      var buffer = d3_geo_clipBufferListener(), ringListener = clipLine(buffer), polygonStarted = false, polygon, ring;
-      function pointRing(λ, φ) {
-        ring.push([ λ, φ ]);
-        var point = rotate(λ, φ);
-        ringListener.point(point[0], point[1]);
-      }
-      function ringStart() {
-        ringListener.lineStart();
-        ring = [];
-      }
-      function ringEnd() {
-        pointRing(ring[0][0], ring[0][1]);
-        ringListener.lineEnd();
-        var clean = ringListener.clean(), ringSegments = buffer.buffer(), segment, n = ringSegments.length;
-        ring.pop();
-        polygon.push(ring);
-        ring = null;
-        if (!n) return;
-        if (clean & 1) {
-          segment = ringSegments[0];
-          var n = segment.length - 1, i = -1, point;
-          if (n > 0) {
-            if (!polygonStarted) listener.polygonStart(), polygonStarted = true;
-            listener.lineStart();
-            while (++i < n) listener.point((point = segment[i])[0], point[1]);
-            listener.lineEnd();
-          }
-          return;
-        }
-        if (n > 1 && clean & 2) ringSegments.push(ringSegments.pop().concat(ringSegments.shift()));
-        segments.push(ringSegments.filter(d3_geo_clipSegmentLength1));
-      }
-      return clip;
-    };
-  }
-  function d3_geo_clipSegmentLength1(segment) {
-    return segment.length > 1;
-  }
-  function d3_geo_clipBufferListener() {
-    var lines = [], line;
-    return {
-      lineStart: function() {
-        lines.push(line = []);
-      },
-      point: function(λ, φ) {
-        line.push([ λ, φ ]);
-      },
-      lineEnd: d3_noop,
-      buffer: function() {
-        var buffer = lines;
-        lines = [];
-        line = null;
-        return buffer;
-      },
-      rejoin: function() {
-        if (lines.length > 1) lines.push(lines.pop().concat(lines.shift()));
-      }
-    };
-  }
-  function d3_geo_clipSort(a, b) {
-    return ((a = a.x)[0] < 0 ? a[1] - halfπ - ε : halfπ - a[1]) - ((b = b.x)[0] < 0 ? b[1] - halfπ - ε : halfπ - b[1]);
-  }
-  var d3_geo_clipAntimeridian = d3_geo_clip(d3_true, d3_geo_clipAntimeridianLine, d3_geo_clipAntimeridianInterpolate, [ -π, -π / 2 ]);
-  function d3_geo_clipAntimeridianLine(listener) {
-    var λ0 = NaN, φ0 = NaN, sλ0 = NaN, clean;
-    return {
-      lineStart: function() {
-        listener.lineStart();
-        clean = 1;
-      },
-      point: function(λ1, φ1) {
-        var sλ1 = λ1 > 0 ? π : -π, dλ = abs(λ1 - λ0);
-        if (abs(dλ - π) < ε) {
-          listener.point(λ0, φ0 = (φ0 + φ1) / 2 > 0 ? halfπ : -halfπ);
-          listener.point(sλ0, φ0);
-          listener.lineEnd();
-          listener.lineStart();
-          listener.point(sλ1, φ0);
-          listener.point(λ1, φ0);
-          clean = 0;
-        } else if (sλ0 !== sλ1 && dλ >= π) {
-          if (abs(λ0 - sλ0) < ε) λ0 -= sλ0 * ε;
-          if (abs(λ1 - sλ1) < ε) λ1 -= sλ1 * ε;
-          φ0 = d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1);
-          listener.point(sλ0, φ0);
-          listener.lineEnd();
-          listener.lineStart();
-          listener.point(sλ1, φ0);
-          clean = 0;
-        }
-        listener.point(λ0 = λ1, φ0 = φ1);
-        sλ0 = sλ1;
-      },
-      lineEnd: function() {
-        listener.lineEnd();
-        λ0 = φ0 = NaN;
-      },
-      clean: function() {
-        return 2 - clean;
-      }
-    };
-  }
-  function d3_geo_clipAntimeridianIntersect(λ0, φ0, λ1, φ1) {
-    var cosφ0, cosφ1, sinλ0_λ1 = Math.sin(λ0 - λ1);
-    return abs(sinλ0_λ1) > ε ? Math.atan((Math.sin(φ0) * (cosφ1 = Math.cos(φ1)) * Math.sin(λ1) - Math.sin(φ1) * (cosφ0 = Math.cos(φ0)) * Math.sin(λ0)) / (cosφ0 * cosφ1 * sinλ0_λ1)) : (φ0 + φ1) / 2;
-  }
-  function d3_geo_clipAntimeridianInterpolate(from, to, direction, listener) {
-    var φ;
-    if (from == null) {
-      φ = direction * halfπ;
-      listener.point(-π, φ);
-      listener.point(0, φ);
-      listener.point(π, φ);
-      listener.point(π, 0);
-      listener.point(π, -φ);
-      listener.point(0, -φ);
-      listener.point(-π, -φ);
-      listener.point(-π, 0);
-      listener.point(-π, φ);
-    } else if (abs(from[0] - to[0]) > ε) {
-      var s = from[0] < to[0] ? π : -π;
-      φ = direction * s / 2;
-      listener.point(-s, φ);
-      listener.point(0, φ);
-      listener.point(s, φ);
-    } else {
-      listener.point(to[0], to[1]);
-    }
-  }
-  function d3_geo_pointInPolygon(point, polygon) {
-    var meridian = point[0], parallel = point[1], meridianNormal = [ Math.sin(meridian), -Math.cos(meridian), 0 ], polarAngle = 0, winding = 0;
-    d3_geo_areaRingSum.reset();
-    for (var i = 0, n = polygon.length; i < n; ++i) {
-      var ring = polygon[i], m = ring.length;
-      if (!m) continue;
-      var point0 = ring[0], λ0 = point0[0], φ0 = point0[1] / 2 + π / 4, sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), j = 1;
-      while (true) {
-        if (j === m) j = 0;
-        point = ring[j];
-        var λ = point[0], φ = point[1] / 2 + π / 4, sinφ = Math.sin(φ), cosφ = Math.cos(φ), dλ = λ - λ0, sdλ = dλ >= 0 ? 1 : -1, adλ = sdλ * dλ, antimeridian = adλ > π, k = sinφ0 * sinφ;
-        d3_geo_areaRingSum.add(Math.atan2(k * sdλ * Math.sin(adλ), cosφ0 * cosφ + k * Math.cos(adλ)));
-        polarAngle += antimeridian ? dλ + sdλ * τ : dλ;
-        if (antimeridian ^ λ0 >= meridian ^ λ >= meridian) {
-          var arc = d3_geo_cartesianCross(d3_geo_cartesian(point0), d3_geo_cartesian(point));
-          d3_geo_cartesianNormalize(arc);
-          var intersection = d3_geo_cartesianCross(meridianNormal, arc);
-          d3_geo_cartesianNormalize(intersection);
-          var φarc = (antimeridian ^ dλ >= 0 ? -1 : 1) * d3_asin(intersection[2]);
-          if (parallel > φarc || parallel === φarc && (arc[0] || arc[1])) {
-            winding += antimeridian ^ dλ >= 0 ? 1 : -1;
-          }
-        }
-        if (!j++) break;
-        λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ, point0 = point;
-      }
-    }
-    return (polarAngle < -ε || polarAngle < ε && d3_geo_areaRingSum < 0) ^ winding & 1;
-  }
-  function d3_geo_clipCircle(radius) {
-    var cr = Math.cos(radius), smallRadius = cr > 0, notHemisphere = abs(cr) > ε, interpolate = d3_geo_circleInterpolate(radius, 6 * d3_radians);
-    return d3_geo_clip(visible, clipLine, interpolate, smallRadius ? [ 0, -radius ] : [ -π, radius - π ]);
-    function visible(λ, φ) {
-      return Math.cos(λ) * Math.cos(φ) > cr;
-    }
-    function clipLine(listener) {
-      var point0, c0, v0, v00, clean;
-      return {
-        lineStart: function() {
-          v00 = v0 = false;
-          clean = 1;
-        },
-        point: function(λ, φ) {
-          var point1 = [ λ, φ ], point2, v = visible(λ, φ), c = smallRadius ? v ? 0 : code(λ, φ) : v ? code(λ + (λ < 0 ? π : -π), φ) : 0;
-          if (!point0 && (v00 = v0 = v)) listener.lineStart();
-          if (v !== v0) {
-            point2 = intersect(point0, point1);
-            if (d3_geo_sphericalEqual(point0, point2) || d3_geo_sphericalEqual(point1, point2)) {
-              point1[0] += ε;
-              point1[1] += ε;
-              v = visible(point1[0], point1[1]);
-            }
-          }
-          if (v !== v0) {
-            clean = 0;
-            if (v) {
-              listener.lineStart();
-              point2 = intersect(point1, point0);
-              listener.point(point2[0], point2[1]);
-            } else {
-              point2 = intersect(point0, point1);
-              listener.point(point2[0], point2[1]);
-              listener.lineEnd();
-            }
-            point0 = point2;
-          } else if (notHemisphere && point0 && smallRadius ^ v) {
-            var t;
-            if (!(c & c0) && (t = intersect(point1, point0, true))) {
-              clean = 0;
-              if (smallRadius) {
-                listener.lineStart();
-                listener.point(t[0][0], t[0][1]);
-                listener.point(t[1][0], t[1][1]);
-                listener.lineEnd();
-              } else {
-                listener.point(t[1][0], t[1][1]);
-                listener.lineEnd();
-                listener.lineStart();
-                listener.point(t[0][0], t[0][1]);
-              }
-            }
-          }
-          if (v && (!point0 || !d3_geo_sphericalEqual(point0, point1))) {
-            listener.point(point1[0], point1[1]);
-          }
-          point0 = point1, v0 = v, c0 = c;
-        },
-        lineEnd: function() {
-          if (v0) listener.lineEnd();
-          point0 = null;
-        },
-        clean: function() {
-          return clean | (v00 && v0) << 1;
-        }
-      };
-    }
-    function intersect(a, b, two) {
-      var pa = d3_geo_cartesian(a), pb = d3_geo_cartesian(b);
-      var n1 = [ 1, 0, 0 ], n2 = d3_geo_cartesianCross(pa, pb), n2n2 = d3_geo_cartesianDot(n2, n2), n1n2 = n2[0], determinant = n2n2 - n1n2 * n1n2;
-      if (!determinant) return !two && a;
-      var c1 = cr * n2n2 / determinant, c2 = -cr * n1n2 / determinant, n1xn2 = d3_geo_cartesianCross(n1, n2), A = d3_geo_cartesianScale(n1, c1), B = d3_geo_cartesianScale(n2, c2);
-      d3_geo_cartesianAdd(A, B);
-      var u = n1xn2, w = d3_geo_cartesianDot(A, u), uu = d3_geo_cartesianDot(u, u), t2 = w * w - uu * (d3_geo_cartesianDot(A, A) - 1);
-      if (t2 < 0) return;
-      var t = Math.sqrt(t2), q = d3_geo_cartesianScale(u, (-w - t) / uu);
-      d3_geo_cartesianAdd(q, A);
-      q = d3_geo_spherical(q);
-      if (!two) return q;
-      var λ0 = a[0], λ1 = b[0], φ0 = a[1], φ1 = b[1], z;
-      if (λ1 < λ0) z = λ0, λ0 = λ1, λ1 = z;
-      var δλ = λ1 - λ0, polar = abs(δλ - π) < ε, meridian = polar || δλ < ε;
-      if (!polar && φ1 < φ0) z = φ0, φ0 = φ1, φ1 = z;
-      if (meridian ? polar ? φ0 + φ1 > 0 ^ q[1] < (abs(q[0] - λ0) < ε ? φ0 : φ1) : φ0 <= q[1] && q[1] <= φ1 : δλ > π ^ (λ0 <= q[0] && q[0] <= λ1)) {
-        var q1 = d3_geo_cartesianScale(u, (-w + t) / uu);
-        d3_geo_cartesianAdd(q1, A);
-        return [ q, d3_geo_spherical(q1) ];
-      }
-    }
-    function code(λ, φ) {
-      var r = smallRadius ? radius : π - radius, code = 0;
-      if (λ < -r) code |= 1; else if (λ > r) code |= 2;
-      if (φ < -r) code |= 4; else if (φ > r) code |= 8;
-      return code;
-    }
-  }
-  function d3_geom_clipLine(x0, y0, x1, y1) {
-    return function(line) {
-      var a = line.a, b = line.b, ax = a.x, ay = a.y, bx = b.x, by = b.y, t0 = 0, t1 = 1, dx = bx - ax, dy = by - ay, r;
-      r = x0 - ax;
-      if (!dx && r > 0) return;
-      r /= dx;
-      if (dx < 0) {
-        if (r < t0) return;
-        if (r < t1) t1 = r;
-      } else if (dx > 0) {
-        if (r > t1) return;
-        if (r > t0) t0 = r;
-      }
-      r = x1 - ax;
-      if (!dx && r < 0) return;
-      r /= dx;
-      if (dx < 0) {
-        if (r > t1) return;
-        if (r > t0) t0 = r;
-      } else if (dx > 0) {
-        if (r < t0) return;
-        if (r < t1) t1 = r;
-      }
-      r = y0 - ay;
-      if (!dy && r > 0) return;
-      r /= dy;
-      if (dy < 0) {
-        if (r < t0) return;
-        if (r < t1) t1 = r;
-      } else if (dy > 0) {
-        if (r > t1) return;
-        if (r > t0) t0 = r;
-      }
-      r = y1 - ay;
-      if (!dy && r < 0) return;
-      r /= dy;
-      if (dy < 0) {
-        if (r > t1) return;
-        if (r > t0) t0 = r;
-      } else if (dy > 0) {
-        if (r < t0) return;
-        if (r < t1) t1 = r;
-      }
-      if (t0 > 0) line.a = {
-        x: ax + t0 * dx,
-        y: ay + t0 * dy
-      };
-      if (t1 < 1) line.b = {
-        x: ax + t1 * dx,
-        y: ay + t1 * dy
-      };
-      return line;
-    };
-  }
-  var d3_geo_clipExtentMAX = 1e9;
-  d3.geo.clipExtent = function() {
-    var x0, y0, x1, y1, stream, clip, clipExtent = {
-      stream: function(output) {
-        if (stream) stream.valid = false;
-        stream = clip(output);
-        stream.valid = true;
-        return stream;
-      },
-      extent: function(_) {
-        if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
-        clip = d3_geo_clipExtent(x0 = +_[0][0], y0 = +_[0][1], x1 = +_[1][0], y1 = +_[1][1]);
-        if (stream) stream.valid = false, stream = null;
-        return clipExtent;
-      }
-    };
-    return clipExtent.extent([ [ 0, 0 ], [ 960, 500 ] ]);
-  };
-  function d3_geo_clipExtent(x0, y0, x1, y1) {
-    return function(listener) {
-      var listener_ = listener, bufferListener = d3_geo_clipBufferListener(), clipLine = d3_geom_clipLine(x0, y0, x1, y1), segments, polygon, ring;
-      var clip = {
-        point: point,
-        lineStart: lineStart,
-        lineEnd: lineEnd,
-        polygonStart: function() {
-          listener = bufferListener;
-          segments = [];
-          polygon = [];
-          clean = true;
-        },
-        polygonEnd: function() {
-          listener = listener_;
-          segments = d3.merge(segments);
-          var clipStartInside = insidePolygon([ x0, y1 ]), inside = clean && clipStartInside, visible = segments.length;
-          if (inside || visible) {
-            listener.polygonStart();
-            if (inside) {
-              listener.lineStart();
-              interpolate(null, null, 1, listener);
-              listener.lineEnd();
-            }
-            if (visible) {
-              d3_geo_clipPolygon(segments, compare, clipStartInside, interpolate, listener);
-            }
-            listener.polygonEnd();
-          }
-          segments = polygon = ring = null;
-        }
-      };
-      function insidePolygon(p) {
-        var wn = 0, n = polygon.length, y = p[1];
-        for (var i = 0; i < n; ++i) {
-          for (var j = 1, v = polygon[i], m = v.length, a = v[0], b; j < m; ++j) {
-            b = v[j];
-            if (a[1] <= y) {
-              if (b[1] > y && d3_cross2d(a, b, p) > 0) ++wn;
-            } else {
-              if (b[1] <= y && d3_cross2d(a, b, p) < 0) --wn;
-            }
-            a = b;
-          }
-        }
-        return wn !== 0;
-      }
-      function interpolate(from, to, direction, listener) {
-        var a = 0, a1 = 0;
-        if (from == null || (a = corner(from, direction)) !== (a1 = corner(to, direction)) || comparePoints(from, to) < 0 ^ direction > 0) {
-          do {
-            listener.point(a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0);
-          } while ((a = (a + direction + 4) % 4) !== a1);
-        } else {
-          listener.point(to[0], to[1]);
-        }
-      }
-      function pointVisible(x, y) {
-        return x0 <= x && x <= x1 && y0 <= y && y <= y1;
-      }
-      function point(x, y) {
-        if (pointVisible(x, y)) listener.point(x, y);
-      }
-      var x__, y__, v__, x_, y_, v_, first, clean;
-      function lineStart() {
-        clip.point = linePoint;
-        if (polygon) polygon.push(ring = []);
-        first = true;
-        v_ = false;
-        x_ = y_ = NaN;
-      }
-      function lineEnd() {
-        if (segments) {
-          linePoint(x__, y__);
-          if (v__ && v_) bufferListener.rejoin();
-          segments.push(bufferListener.buffer());
-        }
-        clip.point = point;
-        if (v_) listener.lineEnd();
-      }
-      function linePoint(x, y) {
-        x = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, x));
-        y = Math.max(-d3_geo_clipExtentMAX, Math.min(d3_geo_clipExtentMAX, y));
-        var v = pointVisible(x, y);
-        if (polygon) ring.push([ x, y ]);
-        if (first) {
-          x__ = x, y__ = y, v__ = v;
-          first = false;
-          if (v) {
-            listener.lineStart();
-            listener.point(x, y);
-          }
-        } else {
-          if (v && v_) listener.point(x, y); else {
-            var l = {
-              a: {
-                x: x_,
-                y: y_
-              },
-              b: {
-                x: x,
-                y: y
-              }
-            };
-            if (clipLine(l)) {
-              if (!v_) {
-                listener.lineStart();
-                listener.point(l.a.x, l.a.y);
-              }
-              listener.point(l.b.x, l.b.y);
-              if (!v) listener.lineEnd();
-              clean = false;
-            } else if (v) {
-              listener.lineStart();
-              listener.point(x, y);
-              clean = false;
-            }
-          }
-        }
-        x_ = x, y_ = y, v_ = v;
-      }
-      return clip;
-    };
-    function corner(p, direction) {
-      return abs(p[0] - x0) < ε ? direction > 0 ? 0 : 3 : abs(p[0] - x1) < ε ? direction > 0 ? 2 : 1 : abs(p[1] - y0) < ε ? direction > 0 ? 1 : 0 : direction > 0 ? 3 : 2;
-    }
-    function compare(a, b) {
-      return comparePoints(a.x, b.x);
-    }
-    function comparePoints(a, b) {
-      var ca = corner(a, 1), cb = corner(b, 1);
-      return ca !== cb ? ca - cb : ca === 0 ? b[1] - a[1] : ca === 1 ? a[0] - b[0] : ca === 2 ? a[1] - b[1] : b[0] - a[0];
-    }
-  }
-  function d3_geo_conic(projectAt) {
-    var φ0 = 0, φ1 = π / 3, m = d3_geo_projectionMutator(projectAt), p = m(φ0, φ1);
-    p.parallels = function(_) {
-      if (!arguments.length) return [ φ0 / π * 180, φ1 / π * 180 ];
-      return m(φ0 = _[0] * π / 180, φ1 = _[1] * π / 180);
-    };
-    return p;
-  }
-  function d3_geo_conicEqualArea(φ0, φ1) {
-    var sinφ0 = Math.sin(φ0), n = (sinφ0 + Math.sin(φ1)) / 2, C = 1 + sinφ0 * (2 * n - sinφ0), ρ0 = Math.sqrt(C) / n;
-    function forward(λ, φ) {
-      var ρ = Math.sqrt(C - 2 * n * Math.sin(φ)) / n;
-      return [ ρ * Math.sin(λ *= n), ρ0 - ρ * Math.cos(λ) ];
-    }
-    forward.invert = function(x, y) {
-      var ρ0_y = ρ0 - y;
-      return [ Math.atan2(x, ρ0_y) / n, d3_asin((C - (x * x + ρ0_y * ρ0_y) * n * n) / (2 * n)) ];
-    };
-    return forward;
-  }
-  (d3.geo.conicEqualArea = function() {
-    return d3_geo_conic(d3_geo_conicEqualArea);
-  }).raw = d3_geo_conicEqualArea;
-  d3.geo.albers = function() {
-    return d3.geo.conicEqualArea().rotate([ 96, 0 ]).center([ -.6, 38.7 ]).parallels([ 29.5, 45.5 ]).scale(1070);
-  };
-  d3.geo.albersUsa = function() {
-    var lower48 = d3.geo.albers();
-    var alaska = d3.geo.conicEqualArea().rotate([ 154, 0 ]).center([ -2, 58.5 ]).parallels([ 55, 65 ]);
-    var hawaii = d3.geo.conicEqualArea().rotate([ 157, 0 ]).center([ -3, 19.9 ]).parallels([ 8, 18 ]);
-    var point, pointStream = {
-      point: function(x, y) {
-        point = [ x, y ];
-      }
-    }, lower48Point, alaskaPoint, hawaiiPoint;
-    function albersUsa(coordinates) {
-      var x = coordinates[0], y = coordinates[1];
-      point = null;
-      (lower48Point(x, y), point) || (alaskaPoint(x, y), point) || hawaiiPoint(x, y);
-      return point;
-    }
-    albersUsa.invert = function(coordinates) {
-      var k = lower48.scale(), t = lower48.translate(), x = (coordinates[0] - t[0]) / k, y = (coordinates[1] - t[1]) / k;
-      return (y >= .12 && y < .234 && x >= -.425 && x < -.214 ? alaska : y >= .166 && y < .234 && x >= -.214 && x < -.115 ? hawaii : lower48).invert(coordinates);
-    };
-    albersUsa.stream = function(stream) {
-      var lower48Stream = lower48.stream(stream), alaskaStream = alaska.stream(stream), hawaiiStream = hawaii.stream(stream);
-      return {
-        point: function(x, y) {
-          lower48Stream.point(x, y);
-          alaskaStream.point(x, y);
-          hawaiiStream.point(x, y);
-        },
-        sphere: function() {
-          lower48Stream.sphere();
-          alaskaStream.sphere();
-          hawaiiStream.sphere();
-        },
-        lineStart: function() {
-          lower48Stream.lineStart();
-          alaskaStream.lineStart();
-          hawaiiStream.lineStart();
-        },
-        lineEnd: function() {
-          lower48Stream.lineEnd();
-          alaskaStream.lineEnd();
-          hawaiiStream.lineEnd();
-        },
-        polygonStart: function() {
-          lower48Stream.polygonStart();
-          alaskaStream.polygonStart();
-          hawaiiStream.polygonStart();
-        },
-        polygonEnd: function() {
-          lower48Stream.polygonEnd();
-          alaskaStream.polygonEnd();
-          hawaiiStream.polygonEnd();
-        }
-      };
-    };
-    albersUsa.precision = function(_) {
-      if (!arguments.length) return lower48.precision();
-      lower48.precision(_);
-      alaska.precision(_);
-      hawaii.precision(_);
-      return albersUsa;
-    };
-    albersUsa.scale = function(_) {
-      if (!arguments.length) return lower48.scale();
-      lower48.scale(_);
-      alaska.scale(_ * .35);
-      hawaii.scale(_);
-      return albersUsa.translate(lower48.translate());
-    };
-    albersUsa.translate = function(_) {
-      if (!arguments.length) return lower48.translate();
-      var k = lower48.scale(), x = +_[0], y = +_[1];
-      lower48Point = lower48.translate(_).clipExtent([ [ x - .455 * k, y - .238 * k ], [ x + .455 * k, y + .238 * k ] ]).stream(pointStream).point;
-      alaskaPoint = alaska.translate([ x - .307 * k, y + .201 * k ]).clipExtent([ [ x - .425 * k + ε, y + .12 * k + ε ], [ x - .214 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
-      hawaiiPoint = hawaii.translate([ x - .205 * k, y + .212 * k ]).clipExtent([ [ x - .214 * k + ε, y + .166 * k + ε ], [ x - .115 * k - ε, y + .234 * k - ε ] ]).stream(pointStream).point;
-      return albersUsa;
-    };
-    return albersUsa.scale(1070);
-  };
-  var d3_geo_pathAreaSum, d3_geo_pathAreaPolygon, d3_geo_pathArea = {
-    point: d3_noop,
-    lineStart: d3_noop,
-    lineEnd: d3_noop,
-    polygonStart: function() {
-      d3_geo_pathAreaPolygon = 0;
-      d3_geo_pathArea.lineStart = d3_geo_pathAreaRingStart;
-    },
-    polygonEnd: function() {
-      d3_geo_pathArea.lineStart = d3_geo_pathArea.lineEnd = d3_geo_pathArea.point = d3_noop;
-      d3_geo_pathAreaSum += abs(d3_geo_pathAreaPolygon / 2);
-    }
-  };
-  function d3_geo_pathAreaRingStart() {
-    var x00, y00, x0, y0;
-    d3_geo_pathArea.point = function(x, y) {
-      d3_geo_pathArea.point = nextPoint;
-      x00 = x0 = x, y00 = y0 = y;
-    };
-    function nextPoint(x, y) {
-      d3_geo_pathAreaPolygon += y0 * x - x0 * y;
-      x0 = x, y0 = y;
-    }
-    d3_geo_pathArea.lineEnd = function() {
-      nextPoint(x00, y00);
-    };
-  }
-  var d3_geo_pathBoundsX0, d3_geo_pathBoundsY0, d3_geo_pathBoundsX1, d3_geo_pathBoundsY1;
-  var d3_geo_pathBounds = {
-    point: d3_geo_pathBoundsPoint,
-    lineStart: d3_noop,
-    lineEnd: d3_noop,
-    polygonStart: d3_noop,
-    polygonEnd: d3_noop
-  };
-  function d3_geo_pathBoundsPoint(x, y) {
-    if (x < d3_geo_pathBoundsX0) d3_geo_pathBoundsX0 = x;
-    if (x > d3_geo_pathBoundsX1) d3_geo_pathBoundsX1 = x;
-    if (y < d3_geo_pathBoundsY0) d3_geo_pathBoundsY0 = y;
-    if (y > d3_geo_pathBoundsY1) d3_geo_pathBoundsY1 = y;
-  }
-  function d3_geo_pathBuffer() {
-    var pointCircle = d3_geo_pathBufferCircle(4.5), buffer = [];
-    var stream = {
-      point: point,
-      lineStart: function() {
-        stream.point = pointLineStart;
-      },
-      lineEnd: lineEnd,
-      polygonStart: function() {
-        stream.lineEnd = lineEndPolygon;
-      },
-      polygonEnd: function() {
-        stream.lineEnd = lineEnd;
-        stream.point = point;
-      },
-      pointRadius: function(_) {
-        pointCircle = d3_geo_pathBufferCircle(_);
-        return stream;
-      },
-      result: function() {
-        if (buffer.length) {
-          var result = buffer.join("");
-          buffer = [];
-          return result;
-        }
-      }
-    };
-    function point(x, y) {
-      buffer.push("M", x, ",", y, pointCircle);
-    }
-    function pointLineStart(x, y) {
-      buffer.push("M", x, ",", y);
-      stream.point = pointLine;
-    }
-    function pointLine(x, y) {
-      buffer.push("L", x, ",", y);
-    }
-    function lineEnd() {
-      stream.point = point;
-    }
-    function lineEndPolygon() {
-      buffer.push("Z");
-    }
-    return stream;
-  }
-  function d3_geo_pathBufferCircle(radius) {
-    return "m0," + radius + "a" + radius + "," + radius + " 0 1,1 0," + -2 * radius + "a" + radius + "," + radius + " 0 1,1 0," + 2 * radius + "z";
-  }
-  var d3_geo_pathCentroid = {
-    point: d3_geo_pathCentroidPoint,
-    lineStart: d3_geo_pathCentroidLineStart,
-    lineEnd: d3_geo_pathCentroidLineEnd,
-    polygonStart: function() {
-      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidRingStart;
-    },
-    polygonEnd: function() {
-      d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
-      d3_geo_pathCentroid.lineStart = d3_geo_pathCentroidLineStart;
-      d3_geo_pathCentroid.lineEnd = d3_geo_pathCentroidLineEnd;
-    }
-  };
-  function d3_geo_pathCentroidPoint(x, y) {
-    d3_geo_centroidX0 += x;
-    d3_geo_centroidY0 += y;
-    ++d3_geo_centroidZ0;
-  }
-  function d3_geo_pathCentroidLineStart() {
-    var x0, y0;
-    d3_geo_pathCentroid.point = function(x, y) {
-      d3_geo_pathCentroid.point = nextPoint;
-      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
-    };
-    function nextPoint(x, y) {
-      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
-      d3_geo_centroidX1 += z * (x0 + x) / 2;
-      d3_geo_centroidY1 += z * (y0 + y) / 2;
-      d3_geo_centroidZ1 += z;
-      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
-    }
-  }
-  function d3_geo_pathCentroidLineEnd() {
-    d3_geo_pathCentroid.point = d3_geo_pathCentroidPoint;
-  }
-  function d3_geo_pathCentroidRingStart() {
-    var x00, y00, x0, y0;
-    d3_geo_pathCentroid.point = function(x, y) {
-      d3_geo_pathCentroid.point = nextPoint;
-      d3_geo_pathCentroidPoint(x00 = x0 = x, y00 = y0 = y);
-    };
-    function nextPoint(x, y) {
-      var dx = x - x0, dy = y - y0, z = Math.sqrt(dx * dx + dy * dy);
-      d3_geo_centroidX1 += z * (x0 + x) / 2;
-      d3_geo_centroidY1 += z * (y0 + y) / 2;
-      d3_geo_centroidZ1 += z;
-      z = y0 * x - x0 * y;
-      d3_geo_centroidX2 += z * (x0 + x);
-      d3_geo_centroidY2 += z * (y0 + y);
-      d3_geo_centroidZ2 += z * 3;
-      d3_geo_pathCentroidPoint(x0 = x, y0 = y);
-    }
-    d3_geo_pathCentroid.lineEnd = function() {
-      nextPoint(x00, y00);
-    };
-  }
-  function d3_geo_pathContext(context) {
-    var pointRadius = 4.5;
-    var stream = {
-      point: point,
-      lineStart: function() {
-        stream.point = pointLineStart;
-      },
-      lineEnd: lineEnd,
-      polygonStart: function() {
-        stream.lineEnd = lineEndPolygon;
-      },
-      polygonEnd: function() {
-        stream.lineEnd = lineEnd;
-        stream.point = point;
-      },
-      pointRadius: function(_) {
-        pointRadius = _;
-        return stream;
-      },
-      result: d3_noop
-    };
-    function point(x, y) {
-      context.moveTo(x + pointRadius, y);
-      context.arc(x, y, pointRadius, 0, τ);
-    }
-    function pointLineStart(x, y) {
-      context.moveTo(x, y);
-      stream.point = pointLine;
-    }
-    function pointLine(x, y) {
-      context.lineTo(x, y);
-    }
-    function lineEnd() {
-      stream.point = point;
-    }
-    function lineEndPolygon() {
-      context.closePath();
-    }
-    return stream;
-  }
-  function d3_geo_resample(project) {
-    var δ2 = .5, cosMinDistance = Math.cos(30 * d3_radians), maxDepth = 16;
-    function resample(stream) {
-      return (maxDepth ? resampleRecursive : resampleNone)(stream);
-    }
-    function resampleNone(stream) {
-      return d3_geo_transformPoint(stream, function(x, y) {
-        x = project(x, y);
-        stream.point(x[0], x[1]);
-      });
-    }
-    function resampleRecursive(stream) {
-      var λ00, φ00, x00, y00, a00, b00, c00, λ0, x0, y0, a0, b0, c0;
-      var resample = {
-        point: point,
-        lineStart: lineStart,
-        lineEnd: lineEnd,
-        polygonStart: function() {
-          stream.polygonStart();
-          resample.lineStart = ringStart;
-        },
-        polygonEnd: function() {
-          stream.polygonEnd();
-          resample.lineStart = lineStart;
-        }
-      };
-      function point(x, y) {
-        x = project(x, y);
-        stream.point(x[0], x[1]);
-      }
-      function lineStart() {
-        x0 = NaN;
-        resample.point = linePoint;
-        stream.lineStart();
-      }
-      function linePoint(λ, φ) {
-        var c = d3_geo_cartesian([ λ, φ ]), p = project(λ, φ);
-        resampleLineTo(x0, y0, λ0, a0, b0, c0, x0 = p[0], y0 = p[1], λ0 = λ, a0 = c[0], b0 = c[1], c0 = c[2], maxDepth, stream);
-        stream.point(x0, y0);
-      }
-      function lineEnd() {
-        resample.point = point;
-        stream.lineEnd();
-      }
-      function ringStart() {
-        lineStart();
-        resample.point = ringPoint;
-        resample.lineEnd = ringEnd;
-      }
-      function ringPoint(λ, φ) {
-        linePoint(λ00 = λ, φ00 = φ), x00 = x0, y00 = y0, a00 = a0, b00 = b0, c00 = c0;
-        resample.point = linePoint;
-      }
-      function ringEnd() {
-        resampleLineTo(x0, y0, λ0, a0, b0, c0, x00, y00, λ00, a00, b00, c00, maxDepth, stream);
-        resample.lineEnd = lineEnd;
-        lineEnd();
-      }
-      return resample;
-    }
-    function resampleLineTo(x0, y0, λ0, a0, b0, c0, x1, y1, λ1, a1, b1, c1, depth, stream) {
-      var dx = x1 - x0, dy = y1 - y0, d2 = dx * dx + dy * dy;
-      if (d2 > 4 * δ2 && depth--) {
-        var a = a0 + a1, b = b0 + b1, c = c0 + c1, m = Math.sqrt(a * a + b * b + c * c), φ2 = Math.asin(c /= m), λ2 = abs(abs(c) - 1) < ε || abs(λ0 - λ1) < ε ? (λ0 + λ1) / 2 : Math.atan2(b, a), p = project(λ2, φ2), x2 = p[0], y2 = p[1], dx2 = x2 - x0, dy2 = y2 - y0, dz = dy * dx2 - dx * dy2;
-        if (dz * dz / d2 > δ2 || abs((dx * dx2 + dy * dy2) / d2 - .5) > .3 || a0 * a1 + b0 * b1 + c0 * c1 < cosMinDistance) {
-          resampleLineTo(x0, y0, λ0, a0, b0, c0, x2, y2, λ2, a /= m, b /= m, c, depth, stream);
-          stream.point(x2, y2);
-          resampleLineTo(x2, y2, λ2, a, b, c, x1, y1, λ1, a1, b1, c1, depth, stream);
-        }
-      }
-    }
-    resample.precision = function(_) {
-      if (!arguments.length) return Math.sqrt(δ2);
-      maxDepth = (δ2 = _ * _) > 0 && 16;
-      return resample;
-    };
-    return resample;
-  }
-  d3.geo.path = function() {
-    var pointRadius = 4.5, projection, context, projectStream, contextStream, cacheStream;
-    function path(object) {
-      if (object) {
-        if (typeof pointRadius === "function") contextStream.pointRadius(+pointRadius.apply(this, arguments));
-        if (!cacheStream || !cacheStream.valid) cacheStream = projectStream(contextStream);
-        d3.geo.stream(object, cacheStream);
-      }
-      return contextStream.result();
-    }
-    path.area = function(object) {
-      d3_geo_pathAreaSum = 0;
-      d3.geo.stream(object, projectStream(d3_geo_pathArea));
-      return d3_geo_pathAreaSum;
-    };
-    path.centroid = function(object) {
-      d3_geo_centroidX0 = d3_geo_centroidY0 = d3_geo_centroidZ0 = d3_geo_centroidX1 = d3_geo_centroidY1 = d3_geo_centroidZ1 = d3_geo_centroidX2 = d3_geo_centroidY2 = d3_geo_centroidZ2 = 0;
-      d3.geo.stream(object, projectStream(d3_geo_pathCentroid));
-      return d3_geo_centroidZ2 ? [ d3_geo_centroidX2 / d3_geo_centroidZ2, d3_geo_centroidY2 / d3_geo_centroidZ2 ] : d3_geo_centroidZ1 ? [ d3_geo_centroidX1 / d3_geo_centroidZ1, d3_geo_centroidY1 / d3_geo_centroidZ1 ] : d3_geo_centroidZ0 ? [ d3_geo_centroidX0 / d3_geo_centroidZ0, d3_geo_centroidY0 / d3_geo_centroidZ0 ] : [ NaN, NaN ];
-    };
-    path.bounds = function(object) {
-      d3_geo_pathBoundsX1 = d3_geo_pathBoundsY1 = -(d3_geo_pathBoundsX0 = d3_geo_pathBoundsY0 = Infinity);
-      d3.geo.stream(object, projectStream(d3_geo_pathBounds));
-      return [ [ d3_geo_pathBoundsX0, d3_geo_pathBoundsY0 ], [ d3_geo_pathBoundsX1, d3_geo_pathBoundsY1 ] ];
-    };
-    path.projection = function(_) {
-      if (!arguments.length) return projection;
-      projectStream = (projection = _) ? _.stream || d3_geo_pathProjectStream(_) : d3_identity;
-      return reset();
-    };
-    path.context = function(_) {
-      if (!arguments.length) return context;
-      contextStream = (context = _) == null ? new d3_geo_pathBuffer() : new d3_geo_pathContext(_);
-      if (typeof pointRadius !== "function") contextStream.pointRadius(pointRadius);
-      return reset();
-    };
-    path.pointRadius = function(_) {
-      if (!arguments.length) return pointRadius;
-      pointRadius = typeof _ === "function" ? _ : (contextStream.pointRadius(+_), +_);
-      return path;
-    };
-    function reset() {
-      cacheStream = null;
-      return path;
-    }
-    return path.projection(d3.geo.albersUsa()).context(null);
-  };
-  function d3_geo_pathProjectStream(project) {
-    var resample = d3_geo_resample(function(x, y) {
-      return project([ x * d3_degrees, y * d3_degrees ]);
-    });
-    return function(stream) {
-      return d3_geo_projectionRadians(resample(stream));
-    };
-  }
-  d3.geo.transform = function(methods) {
-    return {
-      stream: function(stream) {
-        var transform = new d3_geo_transform(stream);
-        for (var k in methods) transform[k] = methods[k];
-        return transform;
-      }
-    };
-  };
-  function d3_geo_transform(stream) {
-    this.stream = stream;
-  }
-  d3_geo_transform.prototype = {
-    point: function(x, y) {
-      this.stream.point(x, y);
-    },
-    sphere: function() {
-      this.stream.sphere();
-    },
-    lineStart: function() {
-      this.stream.lineStart();
-    },
-    lineEnd: function() {
-      this.stream.lineEnd();
-    },
-    polygonStart: function() {
-      this.stream.polygonStart();
-    },
-    polygonEnd: function() {
-      this.stream.polygonEnd();
-    }
-  };
-  function d3_geo_transformPoint(stream, point) {
-    return {
-      point: point,
-      sphere: function() {
-        stream.sphere();
-      },
-      lineStart: function() {
-        stream.lineStart();
-      },
-      lineEnd: function() {
-        stream.lineEnd();
-      },
-      polygonStart: function() {
-        stream.polygonStart();
-      },
-      polygonEnd: function() {
-        stream.polygonEnd();
-      }
-    };
-  }
-  d3.geo.projection = d3_geo_projection;
-  d3.geo.projectionMutator = d3_geo_projectionMutator;
-  function d3_geo_projection(project) {
-    return d3_geo_projectionMutator(function() {
-      return project;
-    })();
-  }
-  function d3_geo_projectionMutator(projectAt) {
-    var project, rotate, projectRotate, projectResample = d3_geo_resample(function(x, y) {
-      x = project(x, y);
-      return [ x[0] * k + δx, δy - x[1] * k ];
-    }), k = 150, x = 480, y = 250, λ = 0, φ = 0, δλ = 0, δφ = 0, δγ = 0, δx, δy, preclip = d3_geo_clipAntimeridian, postclip = d3_identity, clipAngle = null, clipExtent = null, stream;
-    function projection(point) {
-      point = projectRotate(point[0] * d3_radians, point[1] * d3_radians);
-      return [ point[0] * k + δx, δy - point[1] * k ];
-    }
-    function invert(point) {
-      point = projectRotate.invert((point[0] - δx) / k, (δy - point[1]) / k);
-      return point && [ point[0] * d3_degrees, point[1] * d3_degrees ];
-    }
-    projection.stream = function(output) {
-      if (stream) stream.valid = false;
-      stream = d3_geo_projectionRadians(preclip(rotate, projectResample(postclip(output))));
-      stream.valid = true;
-      return stream;
-    };
-    projection.clipAngle = function(_) {
-      if (!arguments.length) return clipAngle;
-      preclip = _ == null ? (clipAngle = _, d3_geo_clipAntimeridian) : d3_geo_clipCircle((clipAngle = +_) * d3_radians);
-      return invalidate();
-    };
-    projection.clipExtent = function(_) {
-      if (!arguments.length) return clipExtent;
-      clipExtent = _;
-      postclip = _ ? d3_geo_clipExtent(_[0][0], _[0][1], _[1][0], _[1][1]) : d3_identity;
-      return invalidate();
-    };
-    projection.scale = function(_) {
-      if (!arguments.length) return k;
-      k = +_;
-      return reset();
-    };
-    projection.translate = function(_) {
-      if (!arguments.length) return [ x, y ];
-      x = +_[0];
-      y = +_[1];
-      return reset();
-    };
-    projection.center = function(_) {
-      if (!arguments.length) return [ λ * d3_degrees, φ * d3_degrees ];
-      λ = _[0] % 360 * d3_radians;
-      φ = _[1] % 360 * d3_radians;
-      return reset();
-    };
-    projection.rotate = function(_) {
-      if (!arguments.length) return [ δλ * d3_degrees, δφ * d3_degrees, δγ * d3_degrees ];
-      δλ = _[0] % 360 * d3_radians;
-      δφ = _[1] % 360 * d3_radians;
-      δγ = _.length > 2 ? _[2] % 360 * d3_radians : 0;
-      return reset();
-    };
-    d3.rebind(projection, projectResample, "precision");
-    function reset() {
-      projectRotate = d3_geo_compose(rotate = d3_geo_rotation(δλ, δφ, δγ), project);
-      var center = project(λ, φ);
-      δx = x - center[0] * k;
-      δy = y + center[1] * k;
-      return invalidate();
-    }
-    function invalidate() {
-      if (stream) stream.valid = false, stream = null;
-      return projection;
-    }
-    return function() {
-      project = projectAt.apply(this, arguments);
-      projection.invert = project.invert && invert;
-      return reset();
-    };
-  }
-  function d3_geo_projectionRadians(stream) {
-    return d3_geo_transformPoint(stream, function(x, y) {
-      stream.point(x * d3_radians, y * d3_radians);
-    });
-  }
-  function d3_geo_equirectangular(λ, φ) {
-    return [ λ, φ ];
-  }
-  (d3.geo.equirectangular = function() {
-    return d3_geo_projection(d3_geo_equirectangular);
-  }).raw = d3_geo_equirectangular.invert = d3_geo_equirectangular;
-  d3.geo.rotation = function(rotate) {
-    rotate = d3_geo_rotation(rotate[0] % 360 * d3_radians, rotate[1] * d3_radians, rotate.length > 2 ? rotate[2] * d3_radians : 0);
-    function forward(coordinates) {
-      coordinates = rotate(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
-      return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
-    }
-    forward.invert = function(coordinates) {
-      coordinates = rotate.invert(coordinates[0] * d3_radians, coordinates[1] * d3_radians);
-      return coordinates[0] *= d3_degrees, coordinates[1] *= d3_degrees, coordinates;
-    };
-    return forward;
-  };
-  function d3_geo_identityRotation(λ, φ) {
-    return [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
-  }
-  d3_geo_identityRotation.invert = d3_geo_equirectangular;
-  function d3_geo_rotation(δλ, δφ, δγ) {
-    return δλ ? δφ || δγ ? d3_geo_compose(d3_geo_rotationλ(δλ), d3_geo_rotationφγ(δφ, δγ)) : d3_geo_rotationλ(δλ) : δφ || δγ ? d3_geo_rotationφγ(δφ, δγ) : d3_geo_identityRotation;
-  }
-  function d3_geo_forwardRotationλ(δλ) {
-    return function(λ, φ) {
-      return λ += δλ, [ λ > π ? λ - τ : λ < -π ? λ + τ : λ, φ ];
-    };
-  }
-  function d3_geo_rotationλ(δλ) {
-    var rotation = d3_geo_forwardRotationλ(δλ);
-    rotation.invert = d3_geo_forwardRotationλ(-δλ);
-    return rotation;
-  }
-  function d3_geo_rotationφγ(δφ, δγ) {
-    var cosδφ = Math.cos(δφ), sinδφ = Math.sin(δφ), cosδγ = Math.cos(δγ), sinδγ = Math.sin(δγ);
-    function rotation(λ, φ) {
-      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδφ + x * sinδφ;
-      return [ Math.atan2(y * cosδγ - k * sinδγ, x * cosδφ - z * sinδφ), d3_asin(k * cosδγ + y * sinδγ) ];
-    }
-    rotation.invert = function(λ, φ) {
-      var cosφ = Math.cos(φ), x = Math.cos(λ) * cosφ, y = Math.sin(λ) * cosφ, z = Math.sin(φ), k = z * cosδγ - y * sinδγ;
-      return [ Math.atan2(y * cosδγ + z * sinδγ, x * cosδφ + k * sinδφ), d3_asin(k * cosδφ - x * sinδφ) ];
-    };
-    return rotation;
-  }
-  d3.geo.circle = function() {
-    var origin = [ 0, 0 ], angle, precision = 6, interpolate;
-    function circle() {
-      var center = typeof origin === "function" ? origin.apply(this, arguments) : origin, rotate = d3_geo_rotation(-center[0] * d3_radians, -center[1] * d3_radians, 0).invert, ring = [];
-      interpolate(null, null, 1, {
-        point: function(x, y) {
-          ring.push(x = rotate(x, y));
-          x[0] *= d3_degrees, x[1] *= d3_degrees;
-        }
-      });
-      return {
-        type: "Polygon",
-        coordinates: [ ring ]
-      };
-    }
-    circle.origin = function(x) {
-      if (!arguments.length) return origin;
-      origin = x;
-      return circle;
-    };
-    circle.angle = function(x) {
-      if (!arguments.length) return angle;
-      interpolate = d3_geo_circleInterpolate((angle = +x) * d3_radians, precision * d3_radians);
-      return circle;
-    };
-    circle.precision = function(_) {
-      if (!arguments.length) return precision;
-      interpolate = d3_geo_circleInterpolate(angle * d3_radians, (precision = +_) * d3_radians);
-      return circle;
-    };
-    return circle.angle(90);
-  };
-  function d3_geo_circleInterpolate(radius, precision) {
-    var cr = Math.cos(radius), sr = Math.sin(radius);
-    return function(from, to, direction, listener) {
-      var step = direction * precision;
-      if (from != null) {
-        from = d3_geo_circleAngle(cr, from);
-        to = d3_geo_circleAngle(cr, to);
-        if (direction > 0 ? from < to : from > to) from += direction * τ;
-      } else {
-        from = radius + direction * τ;
-        to = radius - .5 * step;
-      }
-      for (var point, t = from; direction > 0 ? t > to : t < to; t -= step) {
-        listener.point((point = d3_geo_spherical([ cr, -sr * Math.cos(t), -sr * Math.sin(t) ]))[0], point[1]);
-      }
-    };
-  }
-  function d3_geo_circleAngle(cr, point) {
-    var a = d3_geo_cartesian(point);
-    a[0] -= cr;
-    d3_geo_cartesianNormalize(a);
-    var angle = d3_acos(-a[1]);
-    return ((-a[2] < 0 ? -angle : angle) + 2 * Math.PI - ε) % (2 * Math.PI);
-  }
-  d3.geo.distance = function(a, b) {
-    var Δλ = (b[0] - a[0]) * d3_radians, φ0 = a[1] * d3_radians, φ1 = b[1] * d3_radians, sinΔλ = Math.sin(Δλ), cosΔλ = Math.cos(Δλ), sinφ0 = Math.sin(φ0), cosφ0 = Math.cos(φ0), sinφ1 = Math.sin(φ1), cosφ1 = Math.cos(φ1), t;
-    return Math.atan2(Math.sqrt((t = cosφ1 * sinΔλ) * t + (t = cosφ0 * sinφ1 - sinφ0 * cosφ1 * cosΔλ) * t), sinφ0 * sinφ1 + cosφ0 * cosφ1 * cosΔλ);
-  };
-  d3.geo.graticule = function() {
-    var x1, x0, X1, X0, y1, y0, Y1, Y0, dx = 10, dy = dx, DX = 90, DY = 360, x, y, X, Y, precision = 2.5;
-    function graticule() {
-      return {
-        type: "MultiLineString",
-        coordinates: lines()
-      };
-    }
-    function lines() {
-      return d3.range(Math.ceil(X0 / DX) * DX, X1, DX).map(X).concat(d3.range(Math.ceil(Y0 / DY) * DY, Y1, DY).map(Y)).concat(d3.range(Math.ceil(x0 / dx) * dx, x1, dx).filter(function(x) {
-        return abs(x % DX) > ε;
-      }).map(x)).concat(d3.range(Math.ceil(y0 / dy) * dy, y1, dy).filter(function(y) {
-        return abs(y % DY) > ε;
-      }).map(y));
-    }
-    graticule.lines = function() {
-      return lines().map(function(coordinates) {
-        return {
-          type: "LineString",
-          coordinates: coordinates
-        };
-      });
-    };
-    graticule.outline = function() {
-      return {
-        type: "Polygon",
-        coordinates: [ X(X0).concat(Y(Y1).slice(1), X(X1).reverse().slice(1), Y(Y0).reverse().slice(1)) ]
-      };
-    };
-    graticule.extent = function(_) {
-      if (!arguments.length) return graticule.minorExtent();
-      return graticule.majorExtent(_).minorExtent(_);
-    };
-    graticule.majorExtent = function(_) {
-      if (!arguments.length) return [ [ X0, Y0 ], [ X1, Y1 ] ];
-      X0 = +_[0][0], X1 = +_[1][0];
-      Y0 = +_[0][1], Y1 = +_[1][1];
-      if (X0 > X1) _ = X0, X0 = X1, X1 = _;
-      if (Y0 > Y1) _ = Y0, Y0 = Y1, Y1 = _;
-      return graticule.precision(precision);
-    };
-    graticule.minorExtent = function(_) {
-      if (!arguments.length) return [ [ x0, y0 ], [ x1, y1 ] ];
-      x0 = +_[0][0], x1 = +_[1][0];
-      y0 = +_[0][1], y1 = +_[1][1];
-      if (x0 > x1) _ = x0, x0 = x1, x1 = _;
-      if (y0 > y1) _ = y0, y0 = y1, y1 = _;
-      return graticule.precision(precision);
-    };
-    graticule.step = function(_) {
-      if (!arguments.length) return graticule.minorStep();
-      return graticule.majorStep(_).minorStep(_);
-    };
-    graticule.majorStep = function(_) {
-      if (!arguments.length) return [ DX, DY ];
-      DX = +_[0], DY = +_[1];
-      return graticule;
-    };
-    graticule.minorStep = function(_) {
-      if (!arguments.length) return [ dx, dy ];
-      dx = +_[0], dy = +_[1];
-      return graticule;
-    };
-    graticule.precision = function(_) {
-      if (!arguments.length) return precision;
-      precision = +_;
-      x = d3_geo_graticuleX(y0, y1, 90);
-      y = d3_geo_graticuleY(x0, x1, precision);
-      X = d3_geo_graticuleX(Y0, Y1, 90);
-      Y = d3_geo_graticuleY(X0, X1, precision);
-      return graticule;
-    };
-    return graticule.majorExtent([ [ -180, -90 + ε ], [ 180, 90 - ε ] ]).minorExtent([ [ -180, -80 - ε ], [ 180, 80 + ε ] ]);
-  };
-  function d3_geo_graticuleX(y0, y1, dy) {
-    var y = d3.range(y0, y1 - ε, dy).concat(y1);
-    return function(x) {
-      return y.map(function(y) {
-        return [ x, y ];
-      });
-    };
-  }
-  function d3_geo_graticuleY(x0, x1, dx) {
-    var x = d3.range(x0, x1 - ε, dx).concat(x1);
-    return function(y) {
-      return x.map(function(x) {
-        return [ x, y ];
-      });
-    };
-  }
-  function d3_source(d) {
-    return d.source;
-  }
-  function d3_target(d) {
-    return d.target;
-  }
-  d3.geo.greatArc = function() {
-    var source = d3_source, source_, target = d3_target, target_;
-    function greatArc() {
-      return {
-        type: "LineString",
-        coordinates: [ source_ || source.apply(this, arguments), target_ || target.apply(this, arguments) ]
-      };
-    }
-    greatArc.distance = function() {
-      return d3.geo.distance(source_ || source.apply(this, arguments), target_ || target.apply(this, arguments));
-    };
-    greatArc.source = function(_) {
-      if (!arguments.length) return source;
-      source = _, source_ = typeof _ === "function" ? null : _;
-      return greatArc;
-    };
-    greatArc.target = function(_) {
-      if (!arguments.length) return target;
-      target = _, target_ = typeof _ === "function" ? null : _;
-      return greatArc;
-    };
-    greatArc.precision = function() {
-      return arguments.length ? greatArc : 0;
-    };
-    return greatArc;
-  };
-  d3.geo.interpolate = function(source, target) {
-    return d3_geo_interpolate(source[0] * d3_radians, source[1] * d3_radians, target[0] * d3_radians, target[1] * d3_radians);
-  };
-  function d3_geo_interpolate(x0, y0, x1, y1) {
-    var cy0 = Math.cos(y0), sy0 = Math.sin(y0), cy1 = Math.cos(y1), sy1 = Math.sin(y1), kx0 = cy0 * Math.cos(x0), ky0 = cy0 * Math.sin(x0), kx1 = cy1 * Math.cos(x1), ky1 = cy1 * Math.sin(x1), d = 2 * Math.asin(Math.sqrt(d3_haversin(y1 - y0) + cy0 * cy1 * d3_haversin(x1 - x0))), k = 1 / Math.sin(d);
-    var interpolate = d ? function(t) {
-      var B = Math.sin(t *= d) * k, A = Math.sin(d - t) * k, x = A * kx0 + B * kx1, y = A * ky0 + B * ky1, z = A * sy0 + B * sy1;
-      return [ Math.atan2(y, x) * d3_degrees, Math.atan2(z, Math.sqrt(x * x + y * y)) * d3_degrees ];
-    } : function() {
-      return [ x0 * d3_degrees, y0 * d3_degrees ];
-    };
-    interpolate.distance = d;
-    return interpolate;
-  }
-  d3.geo.length = function(object) {
-    d3_geo_lengthSum = 0;
-    d3.geo.stream(object, d3_geo_length);
-    return d3_geo_lengthSum;
-  };
-  var d3_geo_lengthSum;
-  var d3_geo_length = {
-    sphere: d3_noop,
-    point: d3_noop,
-    lineStart: d3_geo_lengthLineStart,
-    lineEnd: d3_noop,
-    polygonStart: d3_noop,
-    polygonEnd: d3_noop
-  };
-  function d3_geo_lengthLineStart() {
-    var λ0, sinφ0, cosφ0;
-    d3_geo_length.point = function(λ, φ) {
-      λ0 = λ * d3_radians, sinφ0 = Math.sin(φ *= d3_radians), cosφ0 = Math.cos(φ);
-      d3_geo_length.point = nextPoint;
-    };
-    d3_geo_length.lineEnd = function() {
-      d3_geo_length.point = d3_geo_length.lineEnd = d3_noop;
-    };
-    function nextPoint(λ, φ) {
-      var sinφ = Math.sin(φ *= d3_radians), cosφ = Math.cos(φ), t = abs((λ *= d3_radians) - λ0), cosΔλ = Math.cos(t);
-      d3_geo_lengthSum += Math.atan2(Math.sqrt((t = cosφ * Math.sin(t)) * t + (t = cosφ0 * sinφ - sinφ0 * cosφ * cosΔλ) * t), sinφ0 * sinφ + cosφ0 * cosφ * cosΔλ);
-      λ0 = λ, sinφ0 = sinφ, cosφ0 = cosφ;
-    }
-  }
-  function d3_geo_azimuthal(scale, angle) {
-    function azimuthal(λ, φ) {
-      var cosλ = Math.cos(λ), cosφ = Math.cos(φ), k = scale(cosλ * cosφ);
-      return [ k * cosφ * Math.sin(λ), k * Math.sin(φ) ];
-    }
-    azimuthal.invert = function(x, y) {
-      var ρ = Math.sqrt(x * x + y * y), c = angle(ρ), sinc = Math.sin(c), cosc = Math.cos(c);
-      return [ Math.atan2(x * sinc, ρ * cosc), Math.asin(ρ && y * sinc / ρ) ];
-    };
-    return azimuthal;
-  }
-  var d3_geo_azimuthalEqualArea = d3_geo_azimuthal(function(cosλcosφ) {
-    return Math.sqrt(2 / (1 + cosλcosφ));
-  }, function(ρ) {
-    return 2 * Math.asin(ρ / 2);
-  });
-  (d3.geo.azimuthalEqualArea = function() {
-    return d3_geo_projection(d3_geo_azimuthalEqualArea);
-  }).raw = d3_geo_azimuthalEqualArea;
-  var d3_geo_azimuthalEquidistant = d3_geo_azimuthal(function(cosλcosφ) {
-    var c = Math.acos(cosλcosφ);
-    return c && c / Math.sin(c);
-  }, d3_identity);
-  (d3.geo.azimuthalEquidistant = function() {
-    return d3_geo_projection(d3_geo_azimuthalEquidistant);
-  }).raw = d3_geo_azimuthalEquidistant;
-  function d3_geo_conicConformal(φ0, φ1) {
-    var cosφ0 = Math.cos(φ0), t = function(φ) {
-      return Math.tan(π / 4 + φ / 2);
-    }, n = φ0 === φ1 ? Math.sin(φ0) : Math.log(cosφ0 / Math.cos(φ1)) / Math.log(t(φ1) / t(φ0)), F = cosφ0 * Math.pow(t(φ0), n) / n;
-    if (!n) return d3_geo_mercator;
-    function forward(λ, φ) {
-      if (F > 0) {
-        if (φ < -halfπ + ε) φ = -halfπ + ε;
-      } else {
-        if (φ > halfπ - ε) φ = halfπ - ε;
-      }
-      var ρ = F / Math.pow(t(φ), n);
-      return [ ρ * Math.sin(n * λ), F - ρ * Math.cos(n * λ) ];
-    }
-    forward.invert = function(x, y) {
-      var ρ0_y = F - y, ρ = d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y);
-      return [ Math.atan2(x, ρ0_y) / n, 2 * Math.atan(Math.pow(F / ρ, 1 / n)) - halfπ ];
-    };
-    return forward;
-  }
-  (d3.geo.conicConformal = function() {
-    return d3_geo_conic(d3_geo_conicConformal);
-  }).raw = d3_geo_conicConformal;
-  function d3_geo_conicEquidistant(φ0, φ1) {
-    var cosφ0 = Math.cos(φ0), n = φ0 === φ1 ? Math.sin(φ0) : (cosφ0 - Math.cos(φ1)) / (φ1 - φ0), G = cosφ0 / n + φ0;
-    if (abs(n) < ε) return d3_geo_equirectangular;
-    function forward(λ, φ) {
-      var ρ = G - φ;
-      return [ ρ * Math.sin(n * λ), G - ρ * Math.cos(n * λ) ];
-    }
-    forward.invert = function(x, y) {
-      var ρ0_y = G - y;
-      return [ Math.atan2(x, ρ0_y) / n, G - d3_sgn(n) * Math.sqrt(x * x + ρ0_y * ρ0_y) ];
-    };
-    return forward;
-  }
-  (d3.geo.conicEquidistant = function() {
-    return d3_geo_conic(d3_geo_conicEquidistant);
-  }).raw = d3_geo_conicEquidistant;
-  var d3_geo_gnomonic = d3_geo_azimuthal(function(cosλcosφ) {
-    return 1 / cosλcosφ;
-  }, Math.atan);
-  (d3.geo.gnomonic = function() {
-    return d3_geo_projection(d3_geo_gnomonic);
-  }).raw = d3_geo_gnomonic;
-  function d3_geo_mercator(λ, φ) {
-    return [ λ, Math.log(Math.tan(π / 4 + φ / 2)) ];
-  }
-  d3_geo_mercator.invert = function(x, y) {
-    return [ x, 2 * Math.atan(Math.exp(y)) - halfπ ];
-  };
-  function d3_geo_mercatorProjection(project) {
-    var m = d3_geo_projection(project), scale = m.scale, translate = m.translate, clipExtent = m.clipExtent, clipAuto;
-    m.scale = function() {
-      var v = scale.apply(m, arguments);
-      return v === m ? clipAuto ? m.clipExtent(null) : m : v;
-    };
-    m.translate = function() {
-      var v = translate.apply(m, arguments);
-      return v === m ? clipAuto ? m.clipExtent(null) : m : v;
-    };
-    m.clipExtent = function(_) {
-      var v = clipExtent.apply(m, arguments);
-      if (v === m) {
-        if (clipAuto = _ == null) {
-          var k = π * scale(), t = translate();
-          clipExtent([ [ t[0] - k, t[1] - k ], [ t[0] + k, t[1] + k ] ]);
-        }
-      } else if (clipAuto) {
-        v = null;
-      }
-      return v;
-    };
-    return m.clipExtent(null);
-  }
-  (d3.geo.mercator = function() {
-    return d3_geo_mercatorProjection(d3_geo_mercator);
-  }).raw = d3_geo_mercator;
-  var d3_geo_orthographic = d3_geo_azimuthal(function() {
-    return 1;
-  }, Math.asin);
-  (d3.geo.orthographic = function() {
-    return d3_geo_projection(d3_geo_orthographic);
-  }).raw = d3_geo_orthographic;
-  var d3_geo_stereographic = d3_geo_azimuthal(function(cosλcosφ) {
-    return 1 / (1 + cosλcosφ);
-  }, function(ρ) {
-    return 2 * Math.atan(ρ);
-  });
-  (d3.geo.stereographic = function() {
-    return d3_geo_projection(d3_geo_stereographic);
-  }).raw = d3_geo_stereographic;
-  function d3_geo_transverseMercator(λ, φ) {
-    return [ Math.log(Math.tan(π / 4 + φ / 2)), -λ ];
-  }
-  d3_geo_transverseMercator.invert = function(x, y) {
-    return [ -y, 2 * Math.atan(Math.exp(x)) - halfπ ];
-  };
-  (d3.geo.transverseMercator = function() {
-    var projection = d3_geo_mercatorProjection(d3_geo_transverseMercator), center = projection.center, rotate = projection.rotate;
-    projection.center = function(_) {
-      return _ ? center([ -_[1], _[0] ]) : (_ = center(), [ _[1], -_[0] ]);
-    };
-    projection.rotate = function(_) {
-      return _ ? rotate([ _[0], _[1], _.length > 2 ? _[2] + 90 : 90 ]) : (_ = rotate(), 
-      [ _[0], _[1], _[2] - 90 ]);
-    };
-    return rotate([ 0, 0, 90 ]);
-  }).raw = d3_geo_transverseMercator;
-  d3.geom = {};
-  function d3_geom_pointX(d) {
-    return d[0];
-  }
-  function d3_geom_pointY(d) {
-    return d[1];
-  }
-  d3.geom.hull = function(vertices) {
-    var x = d3_geom_pointX, y = d3_geom_pointY;
-    if (arguments.length) return hull(vertices);
-    function hull(data) {
-      if (data.length < 3) return [];
-      var fx = d3_functor(x), fy = d3_functor(y), i, n = data.length, points = [], flippedPoints = [];
-      for (i = 0; i < n; i++) {
-        points.push([ +fx.call(this, data[i], i), +fy.call(this, data[i], i), i ]);
-      }
-      points.sort(d3_geom_hullOrder);
-      for (i = 0; i < n; i++) flippedPoints.push([ points[i][0], -points[i][1] ]);
-      var upper = d3_geom_hullUpper(points), lower = d3_geom_hullUpper(flippedPoints);
-      var skipLeft = lower[0] === upper[0], skipRight = lower[lower.length - 1] === upper[upper.length - 1], polygon = [];
-      for (i = upper.length - 1; i >= 0; --i) polygon.push(data[points[upper[i]][2]]);
-      for (i = +skipLeft; i < lower.length - skipRight; ++i) polygon.push(data[points[lower[i]][2]]);
-      return polygon;
-    }
-    hull.x = function(_) {
-      return arguments.length ? (x = _, hull) : x;
-    };
-    hull.y = function(_) {
-      return arguments.length ? (y = _, hull) : y;
-    };
-    return hull;
-  };
-  function d3_geom_hullUpper(points) {
-    var n = points.length, hull = [ 0, 1 ], hs = 2;
-    for (var i = 2; i < n; i++) {
-      while (hs > 1 && d3_cross2d(points[hull[hs - 2]], points[hull[hs - 1]], points[i]) <= 0) --hs;
-      hull[hs++] = i;
-    }
-    return hull.slice(0, hs);
-  }
-  function d3_geom_hullOrder(a, b) {
-    return a[0] - b[0] || a[1] - b[1];
-  }
-  d3.geom.polygon = function(coordinates) {
-    d3_subclass(coordinates, d3_geom_polygonPrototype);
-    return coordinates;
-  };
-  var d3_geom_polygonPrototype = d3.geom.polygon.prototype = [];
-  d3_geom_polygonPrototype.area = function() {
-    var i = -1, n = this.length, a, b = this[n - 1], area = 0;
-    while (++i < n) {
-      a = b;
-      b = this[i];
-      area += a[1] * b[0] - a[0] * b[1];
-    }
-    return area * .5;
-  };
-  d3_geom_polygonPrototype.centroid = function(k) {
-    var i = -1, n = this.length, x = 0, y = 0, a, b = this[n - 1], c;
-    if (!arguments.length) k = -1 / (6 * this.area());
-    while (++i < n) {
-      a = b;
-      b = this[i];
-      c = a[0] * b[1] - b[0] * a[1];
-      x += (a[0] + b[0]) * c;
-      y += (a[1] + b[1]) * c;
-    }
-    return [ x * k, y * k ];
-  };
-  d3_geom_polygonPrototype.clip = function(subject) {
-    var input, closed = d3_geom_polygonClosed(subject), i = -1, n = this.length - d3_geom_polygonClosed(this), j, m, a = this[n - 1], b, c, d;
-    while (++i < n) {
-      input = subject.slice();
-      subject.length = 0;
-      b = this[i];
-      c = input[(m = input.length - closed) - 1];
-      j = -1;
-      while (++j < m) {
-        d = input[j];
-        if (d3_geom_polygonInside(d, a, b)) {
-          if (!d3_geom_polygonInside(c, a, b)) {
-            subject.push(d3_geom_polygonIntersect(c, d, a, b));
-          }
-          subject.push(d);
-        } else if (d3_geom_polygonInside(c, a, b)) {
-          subject.push(d3_geom_polygonIntersect(c, d, a, b));
-        }
-        c = d;
-      }
-      if (closed) subject.push(subject[0]);
-      a = b;
-    }
-    return subject;
-  };
-  function d3_geom_polygonInside(p, a, b) {
-    return (b[0] - a[0]) * (p[1] - a[1]) < (b[1] - a[1]) * (p[0] - a[0]);
-  }
-  function d3_geom_polygonIntersect(c, d, a, b) {
-    var x1 = c[0], x3 = a[0], x21 = d[0] - x1, x43 = b[0] - x3, y1 = c[1], y3 = a[1], y21 = d[1] - y1, y43 = b[1] - y3, ua = (x43 * (y1 - y3) - y43 * (x1 - x3)) / (y43 * x21 - x43 * y21);
-    return [ x1 + ua * x21, y1 + ua * y21 ];
-  }
-  function d3_geom_polygonClosed(coordinates) {
-    var a = coordinates[0], b = coordinates[coordinates.length - 1];
-    return !(a[0] - b[0] || a[1] - b[1]);
-  }
-  var d3_geom_voronoiEdges, d3_geom_voronoiCells, d3_geom_voronoiBeaches, d3_geom_voronoiBeachPool = [], d3_geom_voronoiFirstCircle, d3_geom_voronoiCircles, d3_geom_voronoiCirclePool = [];
-  function d3_geom_voronoiBeach() {
-    d3_geom_voronoiRedBlackNode(this);
-    this.edge = this.site = this.circle = null;
-  }
-  function d3_geom_voronoiCreateBeach(site) {
-    var beach = d3_geom_voronoiBeachPool.pop() || new d3_geom_voronoiBeach();
-    beach.site = site;
-    return beach;
-  }
-  function d3_geom_voronoiDetachBeach(beach) {
-    d3_geom_voronoiDetachCircle(beach);
-    d3_geom_voronoiBeaches.remove(beach);
-    d3_geom_voronoiBeachPool.push(beach);
-    d3_geom_voronoiRedBlackNode(beach);
-  }
-  function d3_geom_voronoiRemoveBeach(beach) {
-    var circle = beach.circle, x = circle.x, y = circle.cy, vertex = {
-      x: x,
-      y: y
-    }, previous = beach.P, next = beach.N, disappearing = [ beach ];
-    d3_geom_voronoiDetachBeach(beach);
-    var lArc = previous;
-    while (lArc.circle && abs(x - lArc.circle.x) < ε && abs(y - lArc.circle.cy) < ε) {
-      previous = lArc.P;
-      disappearing.unshift(lArc);
-      d3_geom_voronoiDetachBeach(lArc);
-      lArc = previous;
-    }
-    disappearing.unshift(lArc);
-    d3_geom_voronoiDetachCircle(lArc);
-    var rArc = next;
-    while (rArc.circle && abs(x - rArc.circle.x) < ε && abs(y - rArc.circle.cy) < ε) {
-      next = rArc.N;
-      disappearing.push(rArc);
-      d3_geom_voronoiDetachBeach(rArc);
-      rArc = next;
-    }
-    disappearing.push(rArc);
-    d3_geom_voronoiDetachCircle(rArc);
-    var nArcs = disappearing.length, iArc;
-    for (iArc = 1; iArc < nArcs; ++iArc) {
-      rArc = disappearing[iArc];
-      lArc = disappearing[iArc - 1];
-      d3_geom_voronoiSetEdgeEnd(rArc.edge, lArc.site, rArc.site, vertex);
-    }
-    lArc = disappearing[0];
-    rArc = disappearing[nArcs - 1];
-    rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, rArc.site, null, vertex);
-    d3_geom_voronoiAttachCircle(lArc);
-    d3_geom_voronoiAttachCircle(rArc);
-  }
-  function d3_geom_voronoiAddBeach(site) {
-    var x = site.x, directrix = site.y, lArc, rArc, dxl, dxr, node = d3_geom_voronoiBeaches._;
-    while (node) {
-      dxl = d3_geom_voronoiLeftBreakPoint(node, directrix) - x;
-      if (dxl > ε) node = node.L; else {
-        dxr = x - d3_geom_voronoiRightBreakPoint(node, directrix);
-        if (dxr > ε) {
-          if (!node.R) {
-            lArc = node;
-            break;
-          }
-          node = node.R;
-        } else {
-          if (dxl > -ε) {
-            lArc = node.P;
-            rArc = node;
-          } else if (dxr > -ε) {
-            lArc = node;
-            rArc = node.N;
-          } else {
-            lArc = rArc = node;
-          }
-          break;
-        }
-      }
-    }
-    var newArc = d3_geom_voronoiCreateBeach(site);
-    d3_geom_voronoiBeaches.insert(lArc, newArc);
-    if (!lArc && !rArc) return;
-    if (lArc === rArc) {
-      d3_geom_voronoiDetachCircle(lArc);
-      rArc = d3_geom_voronoiCreateBeach(lArc.site);
-      d3_geom_voronoiBeaches.insert(newArc, rArc);
-      newArc.edge = rArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
-      d3_geom_voronoiAttachCircle(lArc);
-      d3_geom_voronoiAttachCircle(rArc);
-      return;
-    }
-    if (!rArc) {
-      newArc.edge = d3_geom_voronoiCreateEdge(lArc.site, newArc.site);
-      return;
-    }
-    d3_geom_voronoiDetachCircle(lArc);
-    d3_geom_voronoiDetachCircle(rArc);
-    var lSite = lArc.site, ax = lSite.x, ay = lSite.y, bx = site.x - ax, by = site.y - ay, rSite = rArc.site, cx = rSite.x - ax, cy = rSite.y - ay, d = 2 * (bx * cy - by * cx), hb = bx * bx + by * by, hc = cx * cx + cy * cy, vertex = {
-      x: (cy * hb - by * hc) / d + ax,
-      y: (bx * hc - cx * hb) / d + ay
-    };
-    d3_geom_voronoiSetEdgeEnd(rArc.edge, lSite, rSite, vertex);
-    newArc.edge = d3_geom_voronoiCreateEdge(lSite, site, null, vertex);
-    rArc.edge = d3_geom_voronoiCreateEdge(site, rSite, null, vertex);
-    d3_geom_voronoiAttachCircle(lArc);
-    d3_geom_voronoiAttachCircle(rArc);
-  }
-  function d3_geom_voronoiLeftBreakPoint(arc, directrix) {
-    var site = arc.site, rfocx = site.x, rfocy = site.y, pby2 = rfocy - directrix;
-    if (!pby2) return rfocx;
-    var lArc = arc.P;
-    if (!lArc) return -Infinity;
-    site = lArc.site;
-    var lfocx = site.x, lfocy = site.y, plby2 = lfocy - directrix;
-    if (!plby2) return lfocx;
-    var hl = lfocx - rfocx, aby2 = 1 / pby2 - 1 / plby2, b = hl / plby2;
-    if (aby2) return (-b + Math.sqrt(b * b - 2 * aby2 * (hl * hl / (-2 * plby2) - lfocy + plby2 / 2 + rfocy - pby2 / 2))) / aby2 + rfocx;
-    return (rfocx + lfocx) / 2;
-  }
-  function d3_geom_voronoiRightBreakPoint(arc, directrix) {
-    var rArc = arc.N;
-    if (rArc) return d3_geom_voronoiLeftBreakPoint(rArc, directrix);
-    var site = arc.site;
-    return site.y === directrix ? site.x : Infinity;
-  }
-  function d3_geom_voronoiCell(site) {
-    this.site = site;
-    this.edges = [];
-  }
-  d3_geom_voronoiCell.prototype.prepare = function() {
-    var halfEdges = this.edges, iHalfEdge = halfEdges.length, edge;
-    while (iHalfEdge--) {
-      edge = halfEdges[iHalfEdge].edge;
-      if (!edge.b || !edge.a) halfEdges.splice(iHalfEdge, 1);
-    }
-    halfEdges.sort(d3_geom_voronoiHalfEdgeOrder);
-    return halfEdges.length;
-  };
-  function d3_geom_voronoiCloseCells(extent) {
-    var x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], x2, y2, x3, y3, cells = d3_geom_voronoiCells, iCell = cells.length, cell, iHalfEdge, halfEdges, nHalfEdges, start, end;
-    while (iCell--) {
-      cell = cells[iCell];
-      if (!cell || !cell.prepare()) continue;
-      halfEdges = cell.edges;
-      nHalfEdges = halfEdges.length;
-      iHalfEdge = 0;
-      while (iHalfEdge < nHalfEdges) {
-        end = halfEdges[iHalfEdge].end(), x3 = end.x, y3 = end.y;
-        start = halfEdges[++iHalfEdge % nHalfEdges].start(), x2 = start.x, y2 = start.y;
-        if (abs(x3 - x2) > ε || abs(y3 - y2) > ε) {
-          halfEdges.splice(iHalfEdge, 0, new d3_geom_voronoiHalfEdge(d3_geom_voronoiCreateBorderEdge(cell.site, end, abs(x3 - x0) < ε && y1 - y3 > ε ? {
-            x: x0,
-            y: abs(x2 - x0) < ε ? y2 : y1
-          } : abs(y3 - y1) < ε && x1 - x3 > ε ? {
-            x: abs(y2 - y1) < ε ? x2 : x1,
-            y: y1
-          } : abs(x3 - x1) < ε && y3 - y0 > ε ? {
-            x: x1,
-            y: abs(x2 - x1) < ε ? y2 : y0
-          } : abs(y3 - y0) < ε && x3 - x0 > ε ? {
-            x: abs(y2 - y0) < ε ? x2 : x0,
-            y: y0
-          } : null), cell.site, null));
-          ++nHalfEdges;
-        }
-      }
-    }
-  }
-  function d3_geom_voronoiHalfEdgeOrder(a, b) {
-    return b.angle - a.angle;
-  }
-  function d3_geom_voronoiCircle() {
-    d3_geom_voronoiRedBlackNode(this);
-    this.x = this.y = this.arc = this.site = this.cy = null;
-  }
-  function d3_geom_voronoiAttachCircle(arc) {
-    var lArc = arc.P, rArc = arc.N;
-    if (!lArc || !rArc) return;
-    var lSite = lArc.site, cSite = arc.site, rSite = rArc.site;
-    if (lSite === rSite) return;
-    var bx = cSite.x, by = cSite.y, ax = lSite.x - bx, ay = lSite.y - by, cx = rSite.x - bx, cy = rSite.y - by;
-    var d = 2 * (ax * cy - ay * cx);
-    if (d >= -ε2) return;
-    var ha = ax * ax + ay * ay, hc = cx * cx + cy * cy, x = (cy * ha - ay * hc) / d, y = (ax * hc - cx * ha) / d, cy = y + by;
-    var circle = d3_geom_voronoiCirclePool.pop() || new d3_geom_voronoiCircle();
-    circle.arc = arc;
-    circle.site = cSite;
-    circle.x = x + bx;
-    circle.y = cy + Math.sqrt(x * x + y * y);
-    circle.cy = cy;
-    arc.circle = circle;
-    var before = null, node = d3_geom_voronoiCircles._;
-    while (node) {
-      if (circle.y < node.y || circle.y === node.y && circle.x <= node.x) {
-        if (node.L) node = node.L; else {
-          before = node.P;
-          break;
-        }
-      } else {
-        if (node.R) node = node.R; else {
-          before = node;
-          break;
-        }
-      }
-    }
-    d3_geom_voronoiCircles.insert(before, circle);
-    if (!before) d3_geom_voronoiFirstCircle = circle;
-  }
-  function d3_geom_voronoiDetachCircle(arc) {
-    var circle = arc.circle;
-    if (circle) {
-      if (!circle.P) d3_geom_voronoiFirstCircle = circle.N;
-      d3_geom_voronoiCircles.remove(circle);
-      d3_geom_voronoiCirclePool.push(circle);
-      d3_geom_voronoiRedBlackNode(circle);
-      arc.circle = null;
-    }
-  }
-  function d3_geom_voronoiClipEdges(extent) {
-    var edges = d3_geom_voronoiEdges, clip = d3_geom_clipLine(extent[0][0], extent[0][1], extent[1][0], extent[1][1]), i = edges.length, e;
-    while (i--) {
-      e = edges[i];
-      if (!d3_geom_voronoiConnectEdge(e, extent) || !clip(e) || abs(e.a.x - e.b.x) < ε && abs(e.a.y - e.b.y) < ε) {
-        e.a = e.b = null;
-        edges.splice(i, 1);
-      }
-    }
-  }
-  function d3_geom_voronoiConnectEdge(edge, extent) {
-    var vb = edge.b;
-    if (vb) return true;
-    var va = edge.a, x0 = extent[0][0], x1 = extent[1][0], y0 = extent[0][1], y1 = extent[1][1], lSite = edge.l, rSite = edge.r, lx = lSite.x, ly = lSite.y, rx = rSite.x, ry = rSite.y, fx = (lx + rx) / 2, fy = (ly + ry) / 2, fm, fb;
-    if (ry === ly) {
-      if (fx < x0 || fx >= x1) return;
-      if (lx > rx) {
-        if (!va) va = {
-          x: fx,
-          y: y0
-        }; else if (va.y >= y1) return;
-        vb = {
-          x: fx,
-          y: y1
-        };
-      } else {
-        if (!va) va = {
-          x: fx,
-          y: y1
-        }; else if (va.y < y0) return;
-        vb = {
-          x: fx,
-          y: y0
-        };
-      }
-    } else {
-      fm = (lx - rx) / (ry - ly);
-      fb = fy - fm * fx;
-      if (fm < -1 || fm > 1) {
-        if (lx > rx) {
-          if (!va) va = {
-            x: (y0 - fb) / fm,
-            y: y0
-          }; else if (va.y >= y1) return;
-          vb = {
-            x: (y1 - fb) / fm,
-            y: y1
-          };
-        } else {
-          if (!va) va = {
-            x: (y1 - fb) / fm,
-            y: y1
-          }; else if (va.y < y0) return;
-          vb = {
-            x: (y0 - fb) / fm,
-            y: y0
-          };
-        }
-      } else {
-        if (ly < ry) {
-          if (!va) va = {
-            x: x0,
-            y: fm * x0 + fb
-          }; else if (va.x >= x1) return;
-          vb = {
-            x: x1,
-            y: fm * x1 + fb
-          };
-        } else {
-          if (!va) va = {
-            x: x1,
-            y: fm * x1 + fb
-          }; else if (va.x < x0) return;
-          vb = {
-            x: x0,
-            y: fm * x0 + fb
-          };
-        }
-      }
-    }
-    edge.a = va;
-    edge.b = vb;
-    return true;
-  }
-  function d3_geom_voronoiEdge(lSite, rSite) {
-    this.l = lSite;
-    this.r = rSite;
-    this.a = this.b = null;
-  }
-  function d3_geom_voronoiCreateEdge(lSite, rSite, va, vb) {
-    var edge = new d3_geom_voronoiEdge(lSite, rSite);
-    d3_geom_voronoiEdges.push(edge);
-    if (va) d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, va);
-    if (vb) d3_geom_voronoiSetEdgeEnd(edge, rSite, lSite, vb);
-    d3_geom_voronoiCells[lSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, lSite, rSite));
-    d3_geom_voronoiCells[rSite.i].edges.push(new d3_geom_voronoiHalfEdge(edge, rSite, lSite));
-    return edge;
-  }
-  function d3_geom_voronoiCreateBorderEdge(lSite, va, vb) {
-    var edge = new d3_geom_voronoiEdge(lSite, null);
-    edge.a = va;
-    edge.b = vb;
-    d3_geom_voronoiEdges.push(edge);
-    return edge;
-  }
-  function d3_geom_voronoiSetEdgeEnd(edge, lSite, rSite, vertex) {
-    if (!edge.a && !edge.b) {
-      edge.a = vertex;
-      edge.l = lSite;
-      edge.r = rSite;
-    } else if (edge.l === rSite) {
-      edge.b = vertex;
-    } else {
-      edge.a = vertex;
-    }
-  }
-  function d3_geom_voronoiHalfEdge(edge, lSite, rSite) {
-    var va = edge.a, vb = edge.b;
-    this.edge = edge;
-    this.site = lSite;
-    this.angle = rSite ? Math.atan2(rSite.y - lSite.y, rSite.x - lSite.x) : edge.l === lSite ? Math.atan2(vb.x - va.x, va.y - vb.y) : Math.atan2(va.x - vb.x, vb.y - va.y);
-  }
-  d3_geom_voronoiHalfEdge.prototype = {
-    start: function() {
-      return this.edge.l === this.site ? this.edge.a : this.edge.b;
-    },
-    end: function() {
-      return this.edge.l === this.site ? this.edge.b : this.edge.a;
-    }
-  };
-  function d3_geom_voronoiRedBlackTree() {
-    this._ = null;
-  }
-  function d3_geom_voronoiRedBlackNode(node) {
-    node.U = node.C = node.L = node.R = node.P = node.N = null;
-  }
-  d3_geom_voronoiRedBlackTree.prototype = {
-    insert: function(after, node) {
-      var parent, grandpa, uncle;
-      if (after) {
-        node.P = after;
-        node.N = after.N;
-        if (after.N) after.N.P = node;
-        after.N = node;
-        if (after.R) {
-          after = after.R;
-          while (after.L) after = after.L;
-          after.L = node;
-        } else {
-          after.R = node;
-        }
-        parent = after;
-      } else if (this._) {
-        after = d3_geom_voronoiRedBlackFirst(this._);
-        node.P = null;
-        node.N = after;
-        after.P = after.L = node;
-        parent = after;
-      } else {
-        node.P = node.N = null;
-        this._ = node;
-        parent = null;
-      }
-      node.L = node.R = null;
-      node.U = parent;
-      node.C = true;
-      after = node;
-      while (parent && parent.C) {
-        grandpa = parent.U;
-        if (parent === grandpa.L) {
-          uncle = grandpa.R;
-          if (uncle && uncle.C) {
-            parent.C = uncle.C = false;
-            grandpa.C = true;
-            after = grandpa;
-          } else {
-            if (after === parent.R) {
-              d3_geom_voronoiRedBlackRotateLeft(this, parent);
-              after = parent;
-              parent = after.U;
-            }
-            parent.C = false;
-            grandpa.C = true;
-            d3_geom_voronoiRedBlackRotateRight(this, grandpa);
-          }
-        } else {
-          uncle = grandpa.L;
-          if (uncle && uncle.C) {
-            parent.C = uncle.C = false;
-            grandpa.C = true;
-            after = grandpa;
-          } else {
-            if (after === parent.L) {
-              d3_geom_voronoiRedBlackRotateRight(this, parent);
-              after = parent;
-              parent = after.U;
-            }
-            parent.C = false;
-            grandpa.C = true;
-            d3_geom_voronoiRedBlackRotateLeft(this, grandpa);
-          }
-        }
-        parent = after.U;
-      }
-      this._.C = false;
-    },
-    remove: function(node) {
-      if (node.N) node.N.P = node.P;
-      if (node.P) node.P.N = node.N;
-      node.N = node.P = null;
-      var parent = node.U, sibling, left = node.L, right = node.R, next, red;
-      if (!left) next = right; else if (!right) next = left; else next = d3_geom_voronoiRedBlackFirst(right);
-      if (parent) {
-        if (parent.L === node) parent.L = next; else parent.R = next;
-      } else {
-        this._ = next;
-      }
-      if (left && right) {
-        red = next.C;
-        next.C = node.C;
-        next.L = left;
-        left.U = next;
-        if (next !== right) {
-          parent = next.U;
-          next.U = node.U;
-          node = next.R;
-          parent.L = node;
-          next.R = right;
-          right.U = next;
-        } else {
-          next.U = parent;
-          parent = next;
-          node = next.R;
-        }
-      } else {
-        red = node.C;
-        node = next;
-      }
-      if (node) node.U = parent;
-      if (red) return;
-      if (node && node.C) {
-        node.C = false;
-        return;
-      }
-      do {
-        if (node === this._) break;
-        if (node === parent.L) {
-          sibling = parent.R;
-          if (sibling.C) {
-            sibling.C = false;
-            parent.C = true;
-            d3_geom_voronoiRedBlackRotateLeft(this, parent);
-            sibling = parent.R;
-          }
-          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
-            if (!sibling.R || !sibling.R.C) {
-              sibling.L.C = false;
-              sibling.C = true;
-              d3_geom_voronoiRedBlackRotateRight(this, sibling);
-              sibling = parent.R;
-            }
-            sibling.C = parent.C;
-            parent.C = sibling.R.C = false;
-            d3_geom_voronoiRedBlackRotateLeft(this, parent);
-            node = this._;
-            break;
-          }
-        } else {
-          sibling = parent.L;
-          if (sibling.C) {
-            sibling.C = false;
-            parent.C = true;
-            d3_geom_voronoiRedBlackRotateRight(this, parent);
-            sibling = parent.L;
-          }
-          if (sibling.L && sibling.L.C || sibling.R && sibling.R.C) {
-            if (!sibling.L || !sibling.L.C) {
-              sibling.R.C = false;
-              sibling.C = true;
-              d3_geom_voronoiRedBlackRotateLeft(this, sibling);
-              sibling = parent.L;
-            }
-            sibling.C = parent.C;
-            parent.C = sibling.L.C = false;
-            d3_geom_voronoiRedBlackRotateRight(this, parent);
-            node = this._;
-            break;
-          }
-        }
-        sibling.C = true;
-        node = parent;
-        parent = parent.U;
-      } while (!node.C);
-      if (node) node.C = false;
-    }
-  };
-  function d3_geom_voronoiRedBlackRotateLeft(tree, node) {
-    var p = node, q = node.R, parent = p.U;
-    if (parent) {
-      if (parent.L === p) parent.L = q; else parent.R = q;
-    } else {
-      tree._ = q;
-    }
-    q.U = parent;
-    p.U = q;
-    p.R = q.L;
-    if (p.R) p.R.U = p;
-    q.L = p;
-  }
-  function d3_geom_voronoiRedBlackRotateRight(tree, node) {
-    var p = node, q = node.L, parent = p.U;
-    if (parent) {
-      if (parent.L === p) parent.L = q; else parent.R = q;
-    } else {
-      tree._ = q;
-    }
-    q.U = parent;
-    p.U = q;
-    p.L = q.R;
-    if (p.L) p.L.U = p;
-    q.R = p;
-  }
-  function d3_geom_voronoiRedBlackFirst(node) {
-    while (node.L) node = node.L;
-    return node;
-  }
-  function d3_geom_voronoi(sites, bbox) {
-    var site = sites.sort(d3_geom_voronoiVertexOrder).pop(), x0, y0, circle;
-    d3_geom_voronoiEdges = [];
-    d3_geom_voronoiCells = new Array(sites.length);
-    d3_geom_voronoiBeaches = new d3_geom_voronoiRedBlackTree();
-    d3_geom_voronoiCircles = new d3_geom_voronoiRedBlackTree();
-    while (true) {
-      circle = d3_geom_voronoiFirstCircle;
-      if (site && (!circle || site.y < circle.y || site.y === circle.y && site.x < circle.x)) {
-        if (site.x !== x0 || site.y !== y0) {
-          d3_geom_voronoiCells[site.i] = new d3_geom_voronoiCell(site);
-          d3_geom_voronoiAddBeach(site);
-          x0 = site.x, y0 = site.y;
-        }
-        site = sites.pop();
-      } else if (circle) {
-        d3_geom_voronoiRemoveBeach(circle.arc);
-      } else {
-        break;
-      }
-    }
-    if (bbox) d3_geom_voronoiClipEdges(bbox), d3_geom_voronoiCloseCells(bbox);
-    var diagram = {
-      cells: d3_geom_voronoiCells,
-      edges: d3_geom_voronoiEdges
-    };
-    d3_geom_voronoiBeaches = d3_geom_voronoiCircles = d3_geom_voronoiEdges = d3_geom_voronoiCells = null;
-    return diagram;
-  }
-  function d3_geom_voronoiVertexOrder(a, b) {
-    return b.y - a.y || b.x - a.x;
-  }
-  d3.geom.voronoi = function(points) {
-    var x = d3_geom_pointX, y = d3_geom_pointY, fx = x, fy = y, clipExtent = d3_geom_voronoiClipExtent;
-    if (points) return voronoi(points);
-    function voronoi(data) {
-      var polygons = new Array(data.length), x0 = clipExtent[0][0], y0 = clipExtent[0][1], x1 = clipExtent[1][0], y1 = clipExtent[1][1];
-      d3_geom_voronoi(sites(data), clipExtent).cells.forEach(function(cell, i) {
-        var edges = cell.edges, site = cell.site, polygon = polygons[i] = edges.length ? edges.map(function(e) {
-          var s = e.start();
-          return [ s.x, s.y ];
-        }) : site.x >= x0 && site.x <= x1 && site.y >= y0 && site.y <= y1 ? [ [ x0, y1 ], [ x1, y1 ], [ x1, y0 ], [ x0, y0 ] ] : [];
-        polygon.point = data[i];
-      });
-      return polygons;
-    }
-    function sites(data) {
-      return data.map(function(d, i) {
-        return {
-          x: Math.round(fx(d, i) / ε) * ε,
-          y: Math.round(fy(d, i) / ε) * ε,
-          i: i
-        };
-      });
-    }
-    voronoi.links = function(data) {
-      return d3_geom_voronoi(sites(data)).edges.filter(function(edge) {
-        return edge.l && edge.r;
-      }).map(function(edge) {
-        return {
-          source: data[edge.l.i],
-          target: data[edge.r.i]
-        };
-      });
-    };
-    voronoi.triangles = function(data) {
-      var triangles = [];
-      d3_geom_voronoi(sites(data)).cells.forEach(function(cell, i) {
-        var site = cell.site, edges = cell.edges.sort(d3_geom_voronoiHalfEdgeOrder), j = -1, m = edges.length, e0, s0, e1 = edges[m - 1].edge, s1 = e1.l === site ? e1.r : e1.l;
-        while (++j < m) {
-          e0 = e1;
-          s0 = s1;
-          e1 = edges[j].edge;
-          s1 = e1.l === site ? e1.r : e1.l;
-          if (i < s0.i && i < s1.i && d3_geom_voronoiTriangleArea(site, s0, s1) < 0) {
-            triangles.push([ data[i], data[s0.i], data[s1.i] ]);
-          }
-        }
-      });
-      return triangles;
-    };
-    voronoi.x = function(_) {
-      return arguments.length ? (fx = d3_functor(x = _), voronoi) : x;
-    };
-    voronoi.y = function(_) {
-      return arguments.length ? (fy = d3_functor(y = _), voronoi) : y;
-    };
-    voronoi.clipExtent = function(_) {
-      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent;
-      clipExtent = _ == null ? d3_geom_voronoiClipExtent : _;
-      return voronoi;
-    };
-    voronoi.size = function(_) {
-      if (!arguments.length) return clipExtent === d3_geom_voronoiClipExtent ? null : clipExtent && clipExtent[1];
-      return voronoi.clipExtent(_ && [ [ 0, 0 ], _ ]);
-    };
-    return voronoi;
-  };
-  var d3_geom_voronoiClipExtent = [ [ -1e6, -1e6 ], [ 1e6, 1e6 ] ];
-  function d3_geom_voronoiTriangleArea(a, b, c) {
-    return (a.x - c.x) * (b.y - a.y) - (a.x - b.x) * (c.y - a.y);
-  }
-  d3.geom.delaunay = function(vertices) {
-    return d3.geom.voronoi().triangles(vertices);
-  };
-  d3.geom.quadtree = function(points, x1, y1, x2, y2) {
-    var x = d3_geom_pointX, y = d3_geom_pointY, compat;
-    if (compat = arguments.length) {
-      x = d3_geom_quadtreeCompatX;
-      y = d3_geom_quadtreeCompatY;
-      if (compat === 3) {
-        y2 = y1;
-        x2 = x1;
-        y1 = x1 = 0;
-      }
-      return quadtree(points);
-    }
-    function quadtree(data) {
-      var d, fx = d3_functor(x), fy = d3_functor(y), xs, ys, i, n, x1_, y1_, x2_, y2_;
-      if (x1 != null) {
-        x1_ = x1, y1_ = y1, x2_ = x2, y2_ = y2;
-      } else {
-        x2_ = y2_ = -(x1_ = y1_ = Infinity);
-        xs = [], ys = [];
-        n = data.length;
-        if (compat) for (i = 0; i < n; ++i) {
-          d = data[i];
-          if (d.x < x1_) x1_ = d.x;
-          if (d.y < y1_) y1_ = d.y;
-          if (d.x > x2_) x2_ = d.x;
-          if (d.y > y2_) y2_ = d.y;
-          xs.push(d.x);
-          ys.push(d.y);
-        } else for (i = 0; i < n; ++i) {
-          var x_ = +fx(d = data[i], i), y_ = +fy(d, i);
-          if (x_ < x1_) x1_ = x_;
-          if (y_ < y1_) y1_ = y_;
-          if (x_ > x2_) x2_ = x_;
-          if (y_ > y2_) y2_ = y_;
-          xs.push(x_);
-          ys.push(y_);
-        }
-      }
-      var dx = x2_ - x1_, dy = y2_ - y1_;
-      if (dx > dy) y2_ = y1_ + dx; else x2_ = x1_ + dy;
-      function insert(n, d, x, y, x1, y1, x2, y2) {
-        if (isNaN(x) || isNaN(y)) return;
-        if (n.leaf) {
-          var nx = n.x, ny = n.y;
-          if (nx != null) {
-            if (abs(nx - x) + abs(ny - y) < .01) {
-              insertChild(n, d, x, y, x1, y1, x2, y2);
-            } else {
-              var nPoint = n.point;
-              n.x = n.y = n.point = null;
-              insertChild(n, nPoint, nx, ny, x1, y1, x2, y2);
-              insertChild(n, d, x, y, x1, y1, x2, y2);
-            }
-          } else {
-            n.x = x, n.y = y, n.point = d;
-          }
-        } else {
-          insertChild(n, d, x, y, x1, y1, x2, y2);
-        }
-      }
-      function insertChild(n, d, x, y, x1, y1, x2, y2) {
-        var xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym, i = below << 1 | right;
-        n.leaf = false;
-        n = n.nodes[i] || (n.nodes[i] = d3_geom_quadtreeNode());
-        if (right) x1 = xm; else x2 = xm;
-        if (below) y1 = ym; else y2 = ym;
-        insert(n, d, x, y, x1, y1, x2, y2);
-      }
-      var root = d3_geom_quadtreeNode();
-      root.add = function(d) {
-        insert(root, d, +fx(d, ++i), +fy(d, i), x1_, y1_, x2_, y2_);
-      };
-      root.visit = function(f) {
-        d3_geom_quadtreeVisit(f, root, x1_, y1_, x2_, y2_);
-      };
-      root.find = function(point) {
-        return d3_geom_quadtreeFind(root, point[0], point[1], x1_, y1_, x2_, y2_);
-      };
-      i = -1;
-      if (x1 == null) {
-        while (++i < n) {
-          insert(root, data[i], xs[i], ys[i], x1_, y1_, x2_, y2_);
-        }
-        --i;
-      } else data.forEach(root.add);
-      xs = ys = data = d = null;
-      return root;
-    }
-    quadtree.x = function(_) {
-      return arguments.length ? (x = _, quadtree) : x;
-    };
-    quadtree.y = function(_) {
-      return arguments.length ? (y = _, quadtree) : y;
-    };
-    quadtree.extent = function(_) {
-      if (!arguments.length) return x1 == null ? null : [ [ x1, y1 ], [ x2, y2 ] ];
-      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = +_[0][0], y1 = +_[0][1], x2 = +_[1][0], 
-      y2 = +_[1][1];
-      return quadtree;
-    };
-    quadtree.size = function(_) {
-      if (!arguments.length) return x1 == null ? null : [ x2 - x1, y2 - y1 ];
-      if (_ == null) x1 = y1 = x2 = y2 = null; else x1 = y1 = 0, x2 = +_[0], y2 = +_[1];
-      return quadtree;
-    };
-    return quadtree;
-  };
-  function d3_geom_quadtreeCompatX(d) {
-    return d.x;
-  }
-  function d3_geom_quadtreeCompatY(d) {
-    return d.y;
-  }
-  function d3_geom_quadtreeNode() {
-    return {
-      leaf: true,
-      nodes: [],
-      point: null,
-      x: null,
-      y: null
-    };
-  }
-  function d3_geom_quadtreeVisit(f, node, x1, y1, x2, y2) {
-    if (!f(node, x1, y1, x2, y2)) {
-      var sx = (x1 + x2) * .5, sy = (y1 + y2) * .5, children = node.nodes;
-      if (children[0]) d3_geom_quadtreeVisit(f, children[0], x1, y1, sx, sy);
-      if (children[1]) d3_geom_quadtreeVisit(f, children[1], sx, y1, x2, sy);
-      if (children[2]) d3_geom_quadtreeVisit(f, children[2], x1, sy, sx, y2);
-      if (children[3]) d3_geom_quadtreeVisit(f, children[3], sx, sy, x2, y2);
-    }
-  }
-  function d3_geom_quadtreeFind(root, x, y, x0, y0, x3, y3) {
-    var minDistance2 = Infinity, closestPoint;
-    (function find(node, x1, y1, x2, y2) {
-      if (x1 > x3 || y1 > y3 || x2 < x0 || y2 < y0) return;
-      if (point = node.point) {
-        var point, dx = x - node.x, dy = y - node.y, distance2 = dx * dx + dy * dy;
-        if (distance2 < minDistance2) {
-          var distance = Math.sqrt(minDistance2 = distance2);
-          x0 = x - distance, y0 = y - distance;
-          x3 = x + distance, y3 = y + distance;
-          closestPoint = point;
-        }
-      }
-      var children = node.nodes, xm = (x1 + x2) * .5, ym = (y1 + y2) * .5, right = x >= xm, below = y >= ym;
-      for (var i = below << 1 | right, j = i + 4; i < j; ++i) {
-        if (node = children[i & 3]) switch (i & 3) {
-         case 0:
-          find(node, x1, y1, xm, ym);
-          break;
-
-         case 1:
-          find(node, xm, y1, x2, ym);
-          break;
-
-         case 2:
-          find(node, x1, ym, xm, y2);
-          break;
-
-         case 3:
-          find(node, xm, ym, x2, y2);
-          break;
-        }
-      }
-    })(root, x0, y0, x3, y3);
-    return closestPoint;
-  }
-  d3.interpolateRgb = d3_interpolateRgb;
-  function d3_interpolateRgb(a, b) {
-    a = d3.rgb(a);
-    b = d3.rgb(b);
-    var ar = a.r, ag = a.g, ab = a.b, br = b.r - ar, bg = b.g - ag, bb = b.b - ab;
-    return function(t) {
-      return "#" + d3_rgb_hex(Math.round(ar + br * t)) + d3_rgb_hex(Math.round(ag + bg * t)) + d3_rgb_hex(Math.round(ab + bb * t));
-    };
-  }
-  d3.interpolateObject = d3_interpolateObject;
-  function d3_interpolateObject(a, b) {
-    var i = {}, c = {}, k;
-    for (k in a) {
-      if (k in b) {
-        i[k] = d3_interpolate(a[k], b[k]);
-      } else {
-        c[k] = a[k];
-      }
-    }
-    for (k in b) {
-      if (!(k in a)) {
-        c[k] = b[k];
-      }
-    }
-    return function(t) {
-      for (k in i) c[k] = i[k](t);
-      return c;
-    };
-  }
-  d3.interpolateNumber = d3_interpolateNumber;
-  function d3_interpolateNumber(a, b) {
-    a = +a, b = +b;
-    return function(t) {
-      return a * (1 - t) + b * t;
-    };
-  }
-  d3.interpolateString = d3_interpolateString;
-  function d3_interpolateString(a, b) {
-    var bi = d3_interpolate_numberA.lastIndex = d3_interpolate_numberB.lastIndex = 0, am, bm, bs, i = -1, s = [], q = [];
-    a = a + "", b = b + "";
-    while ((am = d3_interpolate_numberA.exec(a)) && (bm = d3_interpolate_numberB.exec(b))) {
-      if ((bs = bm.index) > bi) {
-        bs = b.slice(bi, bs);
-        if (s[i]) s[i] += bs; else s[++i] = bs;
-      }
-      if ((am = am[0]) === (bm = bm[0])) {
-        if (s[i]) s[i] += bm; else s[++i] = bm;
-      } else {
-        s[++i] = null;
-        q.push({
-          i: i,
-          x: d3_interpolateNumber(am, bm)
-        });
-      }
-      bi = d3_interpolate_numberB.lastIndex;
-    }
-    if (bi < b.length) {
-      bs = b.slice(bi);
-      if (s[i]) s[i] += bs; else s[++i] = bs;
-    }
-    return s.length < 2 ? q[0] ? (b = q[0].x, function(t) {
-      return b(t) + "";
-    }) : function() {
-      return b;
-    } : (b = q.length, function(t) {
-      for (var i = 0, o; i < b; ++i) s[(o = q[i]).i] = o.x(t);
-      return s.join("");
-    });
-  }
-  var d3_interpolate_numberA = /[-+]?(?:\d+\.?\d*|\.?\d+)(?:[eE][-+]?\d+)?/g, d3_interpolate_numberB = new RegExp(d3_interpolate_numberA.source, "g");
-  d3.interpolate = d3_interpolate;
-  function d3_interpolate(a, b) {
-    var i = d3.interpolators.length, f;
-    while (--i >= 0 && !(f = d3.interpolators[i](a, b))) ;
-    return f;
-  }
-  d3.interpolators = [ function(a, b) {
-    var t = typeof b;
-    return (t === "string" ? d3_rgb_names.has(b) || /^(#|rgb\(|hsl\()/.test(b) ? d3_interpolateRgb : d3_interpolateString : b instanceof d3_color ? d3_interpolateRgb : Array.isArray(b) ? d3_interpolateArray : t === "object" && isNaN(b) ? d3_interpolateObject : d3_interpolateNumber)(a, b);
-  } ];
-  d3.interpolateArray = d3_interpolateArray;
-  function d3_interpolateArray(a, b) {
-    var x = [], c = [], na = a.length, nb = b.length, n0 = Math.min(a.length, b.length), i;
-    for (i = 0; i < n0; ++i) x.push(d3_interpolate(a[i], b[i]));
-    for (;i < na; ++i) c[i] = a[i];
-    for (;i < nb; ++i) c[i] = b[i];
-    return function(t) {
-      for (i = 0; i < n0; ++i) c[i] = x[i](t);
-      return c;
-    };
-  }
-  var d3_ease_default = function() {
-    return d3_identity;
-  };
-  var d3_ease = d3.map({
-    linear: d3_ease_default,
-    poly: d3_ease_poly,
-    quad: function() {
-      return d3_ease_quad;
-    },
-    cubic: function() {
-      return d3_ease_cubic;
-    },
-    sin: function() {
-      return d3_ease_sin;
-    },
-    exp: function() {
-      return d3_ease_exp;
-    },
-    circle: function() {
-      return d3_ease_circle;
-    },
-    elastic: d3_ease_elastic,
-    back: d3_ease_back,
-    bounce: function() {
-      return d3_ease_bounce;
-    }
-  });
-  var d3_ease_mode = d3.map({
-    "in": d3_identity,
-    out: d3_ease_reverse,
-    "in-out": d3_ease_reflect,
-    "out-in": function(f) {
-      return d3_ease_reflect(d3_ease_reverse(f));
-    }
-  });
-  d3.ease = function(name) {
-    var i = name.indexOf("-"), t = i >= 0 ? name.slice(0, i) : name, m = i >= 0 ? name.slice(i + 1) : "in";
-    t = d3_ease.get(t) || d3_ease_default;
-    m = d3_ease_mode.get(m) || d3_identity;
-    return d3_ease_clamp(m(t.apply(null, d3_arraySlice.call(arguments, 1))));
-  };
-  function d3_ease_clamp(f) {
-    return function(t) {
-      return t <= 0 ? 0 : t >= 1 ? 1 : f(t);
-    };
-  }
-  function d3_ease_reverse(f) {
-    return function(t) {
-      return 1 - f(1 - t);
-    };
-  }
-  function d3_ease_reflect(f) {
-    return function(t) {
-      return .5 * (t < .5 ? f(2 * t) : 2 - f(2 - 2 * t));
-    };
-  }
-  function d3_ease_quad(t) {
-    return t * t;
-  }
-  function d3_ease_cubic(t) {
-    return t * t * t;
-  }
-  function d3_ease_cubicInOut(t) {
-    if (t <= 0) return 0;
-    if (t >= 1) return 1;
-    var t2 = t * t, t3 = t2 * t;
-    return 4 * (t < .5 ? t3 : 3 * (t - t2) + t3 - .75);
-  }
-  function d3_ease_poly(e) {
-    return function(t) {
-      return Math.pow(t, e);
-    };
-  }
-  function d3_ease_sin(t) {
-    return 1 - Math.cos(t * halfπ);
-  }
-  function d3_ease_exp(t) {
-    return Math.pow(2, 10 * (t - 1));
-  }
-  function d3_ease_circle(t) {
-    return 1 - Math.sqrt(1 - t * t);
-  }
-  function d3_ease_elastic(a, p) {
-    var s;
-    if (arguments.length < 2) p = .45;
-    if (arguments.length) s = p / τ * Math.asin(1 / a); else a = 1, s = p / 4;
-    return function(t) {
-      return 1 + a * Math.pow(2, -10 * t) * Math.sin((t - s) * τ / p);
-    };
-  }
-  function d3_ease_back(s) {
-    if (!s) s = 1.70158;
-    return function(t) {
-      return t * t * ((s + 1) * t - s);
-    };
-  }
-  function d3_ease_bounce(t) {
-    return t < 1 / 2.75 ? 7.5625 * t * t : t < 2 / 2.75 ? 7.5625 * (t -= 1.5 / 2.75) * t + .75 : t < 2.5 / 2.75 ? 7.5625 * (t -= 2.25 / 2.75) * t + .9375 : 7.5625 * (t -= 2.625 / 2.75) * t + .984375;
-  }
-  d3.interpolateHcl = d3_interpolateHcl;
-  function d3_interpolateHcl(a, b) {
-    a = d3.hcl(a);
-    b = d3.hcl(b);
-    var ah = a.h, ac = a.c, al = a.l, bh = b.h - ah, bc = b.c - ac, bl = b.l - al;
-    if (isNaN(bc)) bc = 0, ac = isNaN(ac) ? b.c : ac;
-    if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
-    return function(t) {
-      return d3_hcl_lab(ah + bh * t, ac + bc * t, al + bl * t) + "";
-    };
-  }
-  d3.interpolateHsl = d3_interpolateHsl;
-  function d3_interpolateHsl(a, b) {
-    a = d3.hsl(a);
-    b = d3.hsl(b);
-    var ah = a.h, as = a.s, al = a.l, bh = b.h - ah, bs = b.s - as, bl = b.l - al;
-    if (isNaN(bs)) bs = 0, as = isNaN(as) ? b.s : as;
-    if (isNaN(bh)) bh = 0, ah = isNaN(ah) ? b.h : ah; else if (bh > 180) bh -= 360; else if (bh < -180) bh += 360;
-    return function(t) {
-      return d3_hsl_rgb(ah + bh * t, as + bs * t, al + bl * t) + "";
-    };
-  }
-  d3.interpolateLab = d3_interpolateLab;
-  function d3_interpolateLab(a, b) {
-    a = d3.lab(a);
-    b = d3.lab(b);
-    var al = a.l, aa = a.a, ab = a.b, bl = b.l - al, ba = b.a - aa, bb = b.b - ab;
-    return function(t) {
-      return d3_lab_rgb(al + bl * t, aa + ba * t, ab + bb * t) + "";
-    };
-  }
-  d3.interpolateRound = d3_interpolateRound;
-  function d3_interpolateRound(a, b) {
-    b -= a;
-    return function(t) {
-      return Math.round(a + b * t);
-    };
-  }
-  d3.transform = function(string) {
-    var g = d3_document.createElementNS(d3.ns.prefix.svg, "g");
-    return (d3.transform = function(string) {
-      if (string != null) {
-        g.setAttribute("transform", string);
-        var t = g.transform.baseVal.consolidate();
-      }
-      return new d3_transform(t ? t.matrix : d3_transformIdentity);
-    })(string);
-  };
-  function d3_transform(m) {
-    var r0 = [ m.a, m.b ], r1 = [ m.c, m.d ], kx = d3_transformNormalize(r0), kz = d3_transformDot(r0, r1), ky = d3_transformNormalize(d3_transformCombine(r1, r0, -kz)) || 0;
-    if (r0[0] * r1[1] < r1[0] * r0[1]) {
-      r0[0] *= -1;
-      r0[1] *= -1;
-      kx *= -1;
-      kz *= -1;
-    }
-    this.rotate = (kx ? Math.atan2(r0[1], r0[0]) : Math.atan2(-r1[0], r1[1])) * d3_degrees;
-    this.translate = [ m.e, m.f ];
-    this.scale = [ kx, ky ];
-    this.skew = ky ? Math.atan2(kz, ky) * d3_degrees : 0;
-  }
-  d3_transform.prototype.toString = function() {
-    return "translate(" + this.translate + ")rotate(" + this.rotate + ")skewX(" + this.skew + ")scale(" + this.scale + ")";
-  };
-  function d3_transformDot(a, b) {
-    return a[0] * b[0] + a[1] * b[1];
-  }
-  function d3_transformNormalize(a) {
-    var k = Math.sqrt(d3_transformDot(a, a));
-    if (k) {
-      a[0] /= k;
-      a[1] /= k;
-    }
-    return k;
-  }
-  function d3_transformCombine(a, b, k) {
-    a[0] += k * b[0];
-    a[1] += k * b[1];
-    return a;
-  }
-  var d3_transformIdentity = {
-    a: 1,
-    b: 0,
-    c: 0,
-    d: 1,
-    e: 0,
-    f: 0
-  };
-  d3.interpolateTransform = d3_interpolateTransform;
-  function d3_interpolateTransform(a, b) {
-    var s = [], q = [], n, A = d3.transform(a), B = d3.transform(b), ta = A.translate, tb = B.translate, ra = A.rotate, rb = B.rotate, wa = A.skew, wb = B.skew, ka = A.scale, kb = B.scale;
-    if (ta[0] != tb[0] || ta[1] != tb[1]) {
-      s.push("translate(", null, ",", null, ")");
-      q.push({
-        i: 1,
-        x: d3_interpolateNumber(ta[0], tb[0])
-      }, {
-        i: 3,
-        x: d3_interpolateNumber(ta[1], tb[1])
-      });
-    } else if (tb[0] || tb[1]) {
-      s.push("translate(" + tb + ")");
-    } else {
-      s.push("");
-    }
-    if (ra != rb) {
-      if (ra - rb > 180) rb += 360; else if (rb - ra > 180) ra += 360;
-      q.push({
-        i: s.push(s.pop() + "rotate(", null, ")") - 2,
-        x: d3_interpolateNumber(ra, rb)
-      });
-    } else if (rb) {
-      s.push(s.pop() + "rotate(" + rb + ")");
-    }
-    if (wa != wb) {
-      q.push({
-        i: s.push(s.pop() + "skewX(", null, ")") - 2,
-        x: d3_interpolateNumber(wa, wb)
-      });
-    } else if (wb) {
-      s.push(s.pop() + "skewX(" + wb + ")");
-    }
-    if (ka[0] != kb[0] || ka[1] != kb[1]) {
-      n = s.push(s.pop() + "scale(", null, ",", null, ")");
-      q.push({
-        i: n - 4,
-        x: d3_interpolateNumber(ka[0], kb[0])
-      }, {
-        i: n - 2,
-        x: d3_interpolateNumber(ka[1], kb[1])
-      });
-    } else if (kb[0] != 1 || kb[1] != 1) {
-      s.push(s.pop() + "scale(" + kb + ")");
-    }
-    n = q.length;
-    return function(t) {
-      var i = -1, o;
-      while (++i < n) s[(o = q[i]).i] = o.x(t);
-      return s.join("");
-    };
-  }
-  function d3_uninterpolateNumber(a, b) {
-    b = (b -= a = +a) || 1 / b;
-    return function(x) {
-      return (x - a) / b;
-    };
-  }
-  function d3_uninterpolateClamp(a, b) {
-    b = (b -= a = +a) || 1 / b;
-    return function(x) {
-      return Math.max(0, Math.min(1, (x - a) / b));
-    };
-  }
-  d3.layout = {};
-  d3.layout.bundle = function() {
-    return function(links) {
-      var paths = [], i = -1, n = links.length;
-      while (++i < n) paths.push(d3_layout_bundlePath(links[i]));
-      return paths;
-    };
-  };
-  function d3_layout_bundlePath(link) {
-    var start = link.source, end = link.target, lca = d3_layout_bundleLeastCommonAncestor(start, end), points = [ start ];
-    while (start !== lca) {
-      start = start.parent;
-      points.push(start);
-    }
-    var k = points.length;
-    while (end !== lca) {
-      points.splice(k, 0, end);
-      end = end.parent;
-    }
-    return points;
-  }
-  function d3_layout_bundleAncestors(node) {
-    var ancestors = [], parent = node.parent;
-    while (parent != null) {
-      ancestors.push(node);
-      node = parent;
-      parent = parent.parent;
-    }
-    ancestors.push(node);
-    return ancestors;
-  }
-  function d3_layout_bundleLeastCommonAncestor(a, b) {
-    if (a === b) return a;
-    var aNodes = d3_layout_bundleAncestors(a), bNodes = d3_layout_bundleAncestors(b), aNode = aNodes.pop(), bNode = bNodes.pop(), sharedNode = null;
-    while (aNode === bNode) {
-      sharedNode = aNode;
-      aNode = aNodes.pop();
-      bNode = bNodes.pop();
-    }
-    return sharedNode;
-  }
-  d3.layout.chord = function() {
-    var chord = {}, chords, groups, matrix, n, padding = 0, sortGroups, sortSubgroups, sortChords;
-    function relayout() {
-      var subgroups = {}, groupSums = [], groupIndex = d3.range(n), subgroupIndex = [], k, x, x0, i, j;
-      chords = [];
-      groups = [];
-      k = 0, i = -1;
-      while (++i < n) {
-        x = 0, j = -1;
-        while (++j < n) {
-          x += matrix[i][j];
-        }
-        groupSums.push(x);
-        subgroupIndex.push(d3.range(n));
-        k += x;
-      }
-      if (sortGroups) {
-        groupIndex.sort(function(a, b) {
-          return sortGroups(groupSums[a], groupSums[b]);
-        });
-      }
-      if (sortSubgroups) {
-        subgroupIndex.forEach(function(d, i) {
-          d.sort(function(a, b) {
-            return sortSubgroups(matrix[i][a], matrix[i][b]);
-          });
-        });
-      }
-      k = (τ - padding * n) / k;
-      x = 0, i = -1;
-      while (++i < n) {
-        x0 = x, j = -1;
-        while (++j < n) {
-          var di = groupIndex[i], dj = subgroupIndex[di][j], v = matrix[di][dj], a0 = x, a1 = x += v * k;
-          subgroups[di + "-" + dj] = {
-            index: di,
-            subindex: dj,
-            startAngle: a0,
-            endAngle: a1,
-            value: v
-          };
-        }
-        groups[di] = {
-          index: di,
-          startAngle: x0,
-          endAngle: x,
-          value: (x - x0) / k
-        };
-        x += padding;
-      }
-      i = -1;
-      while (++i < n) {
-        j = i - 1;
-        while (++j < n) {
-          var source = subgroups[i + "-" + j], target = subgroups[j + "-" + i];
-          if (source.value || target.value) {
-            chords.push(source.value < target.value ? {
-              source: target,
-              target: source
-            } : {
-              source: source,
-              target: target
-            });
-          }
-        }
-      }
-      if (sortChords) resort();
-    }
-    function resort() {
-      chords.sort(function(a, b) {
-        return sortChords((a.source.value + a.target.value) / 2, (b.source.value + b.target.value) / 2);
-      });
-    }
-    chord.matrix = function(x) {
-      if (!arguments.length) return matrix;
-      n = (matrix = x) && matrix.length;
-      chords = groups = null;
-      return chord;
-    };
-    chord.padding = function(x) {
-      if (!arguments.length) return padding;
-      padding = x;
-      chords = groups = null;
-      return chord;
-    };
-    chord.sortGroups = function(x) {
-      if (!arguments.length) return sortGroups;
-      sortGroups = x;
-      chords = groups = null;
-      return chord;
-    };
-    chord.sortSubgroups = function(x) {
-      if (!arguments.length) return sortSubgroups;
-      sortSubgroups = x;
-      chords = null;
-      return chord;
-    };
-    chord.sortChords = function(x) {
-      if (!arguments.length) return sortChords;
-      sortChords = x;
-      if (chords) resort();
-      return chord;
-    };
-    chord.chords = function() {
-      if (!chords) relayout();
-      return chords;
-    };
-    chord.groups = function() {
-      if (!groups) relayout();
-      return groups;
-    };
-    return chord;
-  };
-  d3.layout.force = function() {
-    var force = {}, event = d3.dispatch("start", "tick", "end"), size = [ 1, 1 ], drag, alpha, friction = .9, linkDistance = d3_layout_forceLinkDistance, linkStrength = d3_layout_forceLinkStrength, charge = -30, chargeDistance2 = d3_layout_forceChargeDistance2, gravity = .1, theta2 = .64, nodes = [], links = [], distances, strengths, charges;
-    function repulse(node) {
-      return function(quad, x1, _, x2) {
-        if (quad.point !== node) {
-          var dx = quad.cx - node.x, dy = quad.cy - node.y, dw = x2 - x1, dn = dx * dx + dy * dy;
-          if (dw * dw / theta2 < dn) {
-            if (dn < chargeDistance2) {
-              var k = quad.charge / dn;
-              node.px -= dx * k;
-              node.py -= dy * k;
-            }
-            return true;
-          }
-          if (quad.point && dn && dn < chargeDistance2) {
-            var k = quad.pointCharge / dn;
-            node.px -= dx * k;
-            node.py -= dy * k;
-          }
-        }
-        return !quad.charge;
-      };
-    }
-    force.tick = function() {
-      if ((alpha *= .99) < .005) {
-        event.end({
-          type: "end",
-          alpha: alpha = 0
-        });
-        return true;
-      }
-      var n = nodes.length, m = links.length, q, i, o, s, t, l, k, x, y;
-      for (i = 0; i < m; ++i) {
-        o = links[i];
-        s = o.source;
-        t = o.target;
-        x = t.x - s.x;
-        y = t.y - s.y;
-        if (l = x * x + y * y) {
-          l = alpha * strengths[i] * ((l = Math.sqrt(l)) - distances[i]) / l;
-          x *= l;
-          y *= l;
-          t.x -= x * (k = s.weight / (t.weight + s.weight));
-          t.y -= y * k;
-          s.x += x * (k = 1 - k);
-          s.y += y * k;
-        }
-      }
-      if (k = alpha * gravity) {
-        x = size[0] / 2;
-        y = size[1] / 2;
-        i = -1;
-        if (k) while (++i < n) {
-          o = nodes[i];
-          o.x += (x - o.x) * k;
-          o.y += (y - o.y) * k;
-        }
-      }
-      if (charge) {
-        d3_layout_forceAccumulate(q = d3.geom.quadtree(nodes), alpha, charges);
-        i = -1;
-        while (++i < n) {
-          if (!(o = nodes[i]).fixed) {
-            q.visit(repulse(o));
-          }
-        }
-      }
-      i = -1;
-      while (++i < n) {
-        o = nodes[i];
-        if (o.fixed) {
-          o.x = o.px;
-          o.y = o.py;
-        } else {
-          o.x -= (o.px - (o.px = o.x)) * friction;
-          o.y -= (o.py - (o.py = o.y)) * friction;
-        }
-      }
-      event.tick({
-        type: "tick",
-        alpha: alpha
-      });
-    };
-    force.nodes = function(x) {
-      if (!arguments.length) return nodes;
-      nodes = x;
-      return force;
-    };
-    force.links = function(x) {
-      if (!arguments.length) return links;
-      links = x;
-      return force;
-    };
-    force.size = function(x) {
-      if (!arguments.length) return size;
-      size = x;
-      return force;
-    };
-    force.linkDistance = function(x) {
-      if (!arguments.length) return linkDistance;
-      linkDistance = typeof x === "function" ? x : +x;
-      return force;
-    };
-    force.distance = force.linkDistance;
-    force.linkStrength = function(x) {
-      if (!arguments.length) return linkStrength;
-      linkStrength = typeof x === "function" ? x : +x;
-      return force;
-    };
-    force.friction = function(x) {
-      if (!arguments.length) return friction;
-      friction = +x;
-      return force;
-    };
-    force.charge = function(x) {
-      if (!arguments.length) return charge;
-      charge = typeof x === "function" ? x : +x;
-      return force;
-    };
-    force.chargeDistance = function(x) {
-      if (!arguments.length) return Math.sqrt(chargeDistance2);
-      chargeDistance2 = x * x;
-      return force;
-    };
-    force.gravity = function(x) {
-      if (!arguments.length) return gravity;
-      gravity = +x;
-      return force;
-    };
-    force.theta = function(x) {
-      if (!arguments.length) return Math.sqrt(theta2);
-      theta2 = x * x;
-      return force;
-    };
-    force.alpha = function(x) {
-      if (!arguments.length) return alpha;
-      x = +x;
-      if (alpha) {
-        if (x > 0) alpha = x; else alpha = 0;
-      } else if (x > 0) {
-        event.start({
-          type: "start",
-          alpha: alpha = x
-        });
-        d3.timer(force.tick);
-      }
-      return force;
-    };
-    force.start = function() {
-      var i, n = nodes.length, m = links.length, w = size[0], h = size[1], neighbors, o;
-      for (i = 0; i < n; ++i) {
-        (o = nodes[i]).index = i;
-        o.weight = 0;
-      }
-      for (i = 0; i < m; ++i) {
-        o = links[i];
-        if (typeof o.source == "number") o.source = nodes[o.source];
-        if (typeof o.target == "number") o.target = nodes[o.target];
-        ++o.source.weight;
-        ++o.target.weight;
-      }
-      for (i = 0; i < n; ++i) {
-        o = nodes[i];
-        if (isNaN(o.x)) o.x = position("x", w);
-        if (isNaN(o.y)) o.y = position("y", h);
-        if (isNaN(o.px)) o.px = o.x;
-        if (isNaN(o.py)) o.py = o.y;
-      }
-      distances = [];
-      if (typeof linkDistance === "function") for (i = 0; i < m; ++i) distances[i] = +linkDistance.call(this, links[i], i); else for (i = 0; i < m; ++i) distances[i] = linkDistance;
-      strengths = [];
-      if (typeof linkStrength === "function") for (i = 0; i < m; ++i) strengths[i] = +linkStrength.call(this, links[i], i); else for (i = 0; i < m; ++i) strengths[i] = linkStrength;
-      charges = [];
-      if (typeof charge === "function") for (i = 0; i < n; ++i) charges[i] = +charge.call(this, nodes[i], i); else for (i = 0; i < n; ++i) charges[i] = charge;
-      function position(dimension, size) {
-        if (!neighbors) {
-          neighbors = new Array(n);
-          for (j = 0; j < n; ++j) {
-            neighbors[j] = [];
-          }
-          for (j = 0; j < m; ++j) {
-            var o = links[j];
-            neighbors[o.source.index].push(o.target);
-            neighbors[o.target.index].push(o.source);
-          }
-        }
-        var candidates = neighbors[i], j = -1, l = candidates.length, x;
-        while (++j < l) if (!isNaN(x = candidates[j][dimension])) return x;
-        return Math.random() * size;
-      }
-      return force.resume();
-    };
-    force.resume = function() {
-      return force.alpha(.1);
-    };
-    force.stop = function() {
-      return force.alpha(0);
-    };
-    force.drag = function() {
-      if (!drag) drag = d3.behavior.drag().origin(d3_identity).on("dragstart.force", d3_layout_forceDragstart).on("drag.force", dragmove).on("dragend.force", d3_layout_forceDragend);
-      if (!arguments.length) return drag;
-      this.on("mouseover.force", d3_layout_forceMouseover).on("mouseout.force", d3_layout_forceMouseout).call(drag);
-    };
-    function dragmove(d) {
-      d.px = d3.event.x, d.py = d3.event.y;
-      force.resume();
-    }
-    return d3.rebind(force, event, "on");
-  };
-  function d3_layout_forceDragstart(d) {
-    d.fixed |= 2;
-  }
-  function d3_layout_forceDragend(d) {
-    d.fixed &= ~6;
-  }
-  function d3_layout_forceMouseover(d) {
-    d.fixed |= 4;
-    d.px = d.x, d.py = d.y;
-  }
-  function d3_layout_forceMouseout(d) {
-    d.fixed &= ~4;
-  }
-  function d3_layout_forceAccumulate(quad, alpha, charges) {
-    var cx = 0, cy = 0;
-    quad.charge = 0;
-    if (!quad.leaf) {
-      var nodes = quad.nodes, n = nodes.length, i = -1, c;
-      while (++i < n) {
-        c = nodes[i];
-        if (c == null) continue;
-        d3_layout_forceAccumulate(c, alpha, charges);
-        quad.charge += c.charge;
-        cx += c.charge * c.cx;
-        cy += c.charge * c.cy;
-      }
-    }
-    if (quad.point) {
-      if (!quad.leaf) {
-        quad.point.x += Math.random() - .5;
-        quad.point.y += Math.random() - .5;
-      }
-      var k = alpha * charges[quad.point.index];
-      quad.charge += quad.pointCharge = k;
-      cx += k * quad.point.x;
-      cy += k * quad.point.y;
-    }
-    quad.cx = cx / quad.charge;
-    quad.cy = cy / quad.charge;
-  }
-  var d3_layout_forceLinkDistance = 20, d3_layout_forceLinkStrength = 1, d3_layout_forceChargeDistance2 = Infinity;
-  d3.layout.hierarchy = function() {
-    var sort = d3_layout_hierarchySort, children = d3_layout_hierarchyChildren, value = d3_layout_hierarchyValue;
-    function hierarchy(root) {
-      var stack = [ root ], nodes = [], node;
-      root.depth = 0;
-      while ((node = stack.pop()) != null) {
-        nodes.push(node);
-        if ((childs = children.call(hierarchy, node, node.depth)) && (n = childs.length)) {
-          var n, childs, child;
-          while (--n >= 0) {
-            stack.push(child = childs[n]);
-            child.parent = node;
-            child.depth = node.depth + 1;
-          }
-          if (value) node.value = 0;
-          node.children = childs;
-        } else {
-          if (value) node.value = +value.call(hierarchy, node, node.depth) || 0;
-          delete node.children;
-        }
-      }
-      d3_layout_hierarchyVisitAfter(root, function(node) {
-        var childs, parent;
-        if (sort && (childs = node.children)) childs.sort(sort);
-        if (value && (parent = node.parent)) parent.value += node.value;
-      });
-      return nodes;
-    }
-    hierarchy.sort = function(x) {
-      if (!arguments.length) return sort;
-      sort = x;
-      return hierarchy;
-    };
-    hierarchy.children = function(x) {
-      if (!arguments.length) return children;
-      children = x;
-      return hierarchy;
-    };
-    hierarchy.value = function(x) {
-      if (!arguments.length) return value;
-      value = x;
-      return hierarchy;
-    };
-    hierarchy.revalue = function(root) {
-      if (value) {
-        d3_layout_hierarchyVisitBefore(root, function(node) {
-          if (node.children) node.value = 0;
-        });
-        d3_layout_hierarchyVisitAfter(root, function(node) {
-          var parent;
-          if (!node.children) node.value = +value.call(hierarchy, node, node.depth) || 0;
-          if (parent = node.parent) parent.value += node.value;
-        });
-      }
-      return root;
-    };
-    return hierarchy;
-  };
-  function d3_layout_hierarchyRebind(object, hierarchy) {
-    d3.rebind(object, hierarchy, "sort", "children", "value");
-    object.nodes = object;
-    object.links = d3_layout_hierarchyLinks;
-    return object;
-  }
-  function d3_layout_hierarchyVisitBefore(node, callback) {
-    var nodes = [ node ];
-    while ((node = nodes.pop()) != null) {
-      callback(node);
-      if ((children = node.children) && (n = children.length)) {
-        var n, children;
-        while (--n >= 0) nodes.push(children[n]);
-      }
-    }
-  }
-  function d3_layout_hierarchyVisitAfter(node, callback) {
-    var nodes = [ node ], nodes2 = [];
-    while ((node = nodes.pop()) != null) {
-      nodes2.push(node);
-      if ((children = node.children) && (n = children.length)) {
-        var i = -1, n, children;
-        while (++i < n) nodes.push(children[i]);
-      }
-    }
-    while ((node = nodes2.pop()) != null) {
-      callback(node);
-    }
-  }
-  function d3_layout_hierarchyChildren(d) {
-    return d.children;
-  }
-  function d3_layout_hierarchyValue(d) {
-    return d.value;
-  }
-  function d3_layout_hierarchySort(a, b) {
-    return b.value - a.value;
-  }
-  function d3_layout_hierarchyLinks(nodes) {
-    return d3.merge(nodes.map(function(parent) {
-      return (parent.children || []).map(function(child) {
-        return {
-          source: parent,
-          target: child
-        };
-      });
-    }));
-  }
-  d3.layout.partition = function() {
-    var hierarchy = d3.layout.hierarchy(), size = [ 1, 1 ];
-    function position(node, x, dx, dy) {
-      var children = node.children;
-      node.x = x;
-      node.y = node.depth * dy;
-      node.dx = dx;
-      node.dy = dy;
-      if (children && (n = children.length)) {
-        var i = -1, n, c, d;
-        dx = node.value ? dx / node.value : 0;
-        while (++i < n) {
-          position(c = children[i], x, d = c.value * dx, dy);
-          x += d;
-        }
-      }
-    }
-    function depth(node) {
-      var children = node.children, d = 0;
-      if (children && (n = children.length)) {
-        var i = -1, n;
-        while (++i < n) d = Math.max(d, depth(children[i]));
-      }
-      return 1 + d;
-    }
-    function partition(d, i) {
-      var nodes = hierarchy.call(this, d, i);
-      position(nodes[0], 0, size[0], size[1] / depth(nodes[0]));
-      return nodes;
-    }
-    partition.size = function(x) {
-      if (!arguments.length) return size;
-      size = x;
-      return partition;
-    };
-    return d3_layout_hierarchyRebind(partition, hierarchy);
-  };
-  d3.layout.pie = function() {
-    var value = Number, sort = d3_layout_pieSortByValue, startAngle = 0, endAngle = τ, padAngle = 0;
-    function pie(data) {
-      var n = data.length, values = data.map(function(d, i) {
-        return +value.call(pie, d, i);
-      }), a = +(typeof startAngle === "function" ? startAngle.apply(this, arguments) : startAngle), da = (typeof endAngle === "function" ? endAngle.apply(this, arguments) : endAngle) - a, p = Math.min(Math.abs(da) / n, +(typeof padAngle === "function" ? padAngle.apply(this, arguments) : padAngle)), pa = p * (da < 0 ? -1 : 1), k = (da - n * pa) / d3.sum(values), index = d3.range(n), arcs = [], v;
-      if (sort != null) index.sort(sort === d3_layout_pieSortByValue ? function(i, j) {
-        return values[j] - values[i];
-      } : function(i, j) {
-        return sort(data[i], data[j]);
-      });
-      index.forEach(function(i) {
-        arcs[i] = {
-          data: data[i],
-          value: v = values[i],
-          startAngle: a,
-          endAngle: a += v * k + pa,
-          padAngle: p
-        };
-      });
-      return arcs;
-    }
-    pie.value = function(_) {
-      if (!arguments.length) return value;
-      value = _;
-      return pie;
-    };
-    pie.sort = function(_) {
-      if (!arguments.length) return sort;
-      sort = _;
-      return pie;
-    };
-    pie.startAngle = function(_) {
-      if (!arguments.length) return startAngle;
-      startAngle = _;
-      return pie;
-    };
-    pie.endAngle = function(_) {
-      if (!arguments.length) return endAngle;
-      endAngle = _;
-      return pie;
-    };
-    pie.padAngle = function(_) {
-      if (!arguments.length) return padAngle;
-      padAngle = _;
-      return pie;
-    };
-    return pie;
-  };
-  var d3_layout_pieSortByValue = {};
-  d3.layout.stack = function() {
-    var values = d3_identity, order = d3_layout_stackOrderDefault, offset = d3_layout_stackOffsetZero, out = d3_layout_stackOut, x = d3_layout_stackX, y = d3_layout_stackY;
-    function stack(data, index) {
-      if (!(n = data.length)) return data;
-      var series = data.map(function(d, i) {
-        return values.call(stack, d, i);
-      });
-      var points = series.map(function(d) {
-        return d.map(function(v, i) {
-          return [ x.call(stack, v, i), y.call(stack, v, i) ];
-        });
-      });
-      var orders = order.call(stack, points, index);
-      series = d3.permute(series, orders);
-      points = d3.permute(points, orders);
-      var offsets = offset.call(stack, points, index);
-      var m = series[0].length, n, i, j, o;
-      for (j = 0; j < m; ++j) {
-        out.call(stack, series[0][j], o = offsets[j], points[0][j][1]);
-        for (i = 1; i < n; ++i) {
-          out.call(stack, series[i][j], o += points[i - 1][j][1], points[i][j][1]);
-        }
-      }
-      return data;
-    }
-    stack.values = function(x) {
-      if (!arguments.length) return values;
-      values = x;
-      return stack;
-    };
-    stack.order = function(x) {
-      if (!arguments.length) return order;
-      order = typeof x === "function" ? x : d3_layout_stackOrders.get(x) || d3_layout_stackOrderDefault;
-      return stack;
-    };
-    stack.offset = function(x) {
-      if (!arguments.length) return offset;
-      offset = typeof x === "function" ? x : d3_layout_stackOffsets.get(x) || d3_layout_stackOffsetZero;
-      return stack;
-    };
-    stack.x = function(z) {
-      if (!arguments.length) return x;
-      x = z;
-      return stack;
-    };
-    stack.y = function(z) {
-      if (!arguments.length) return y;
-      y = z;
-      return stack;
-    };
-    stack.out = function(z) {
-      if (!arguments.length) return out;
-      out = z;
-      return stack;
-    };
-    return stack;
-  };
-  function d3_layout_stackX(d) {
-    return d.x;
-  }
-  function d3_layout_stackY(d) {
-    return d.y;
-  }
-  function d3_layout_stackOut(d, y0, y) {
-    d.y0 = y0;
-    d.y = y;
-  }
-  var d3_layout_stackOrders = d3.map({
-    "inside-out": function(data) {
-      var n = data.length, i, j, max = data.map(d3_layout_stackMaxIndex), sums = data.map(d3_layout_stackReduceSum), index = d3.range(n).sort(function(a, b) {
-        return max[a] - max[b];
-      }), top = 0, bottom = 0, tops = [], bottoms = [];
-      for (i = 0; i < n; ++i) {
-        j = index[i];
-        if (top < bottom) {
-          top += sums[j];
-          tops.push(j);
-        } else {
-          bottom += sums[j];
-          bottoms.push(j);
-        }
-      }
-      return bottoms.reverse().concat(tops);
-    },
-    reverse: function(data) {
-      return d3.range(data.length).reverse();
-    },
-    "default": d3_layout_stackOrderDefault
-  });
-  var d3_layout_stackOffsets = d3.map({
-    silhouette: function(data) {
-      var n = data.length, m = data[0].length, sums = [], max = 0, i, j, o, y0 = [];
-      for (j = 0; j < m; ++j) {
-        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
-        if (o > max) max = o;
-        sums.push(o);
-      }
-      for (j = 0; j < m; ++j) {
-        y0[j] = (max - sums[j]) / 2;
-      }
-      return y0;
-    },
-    wiggle: function(data) {
-      var n = data.length, x = data[0], m = x.length, i, j, k, s1, s2, s3, dx, o, o0, y0 = [];
-      y0[0] = o = o0 = 0;
-      for (j = 1; j < m; ++j) {
-        for (i = 0, s1 = 0; i < n; ++i) s1 += data[i][j][1];
-        for (i = 0, s2 = 0, dx = x[j][0] - x[j - 1][0]; i < n; ++i) {
-          for (k = 0, s3 = (data[i][j][1] - data[i][j - 1][1]) / (2 * dx); k < i; ++k) {
-            s3 += (data[k][j][1] - data[k][j - 1][1]) / dx;
-          }
-          s2 += s3 * data[i][j][1];
-        }
-        y0[j] = o -= s1 ? s2 / s1 * dx : 0;
-        if (o < o0) o0 = o;
-      }
-      for (j = 0; j < m; ++j) y0[j] -= o0;
-      return y0;
-    },
-    expand: function(data) {
-      var n = data.length, m = data[0].length, k = 1 / n, i, j, o, y0 = [];
-      for (j = 0; j < m; ++j) {
-        for (i = 0, o = 0; i < n; i++) o += data[i][j][1];
-        if (o) for (i = 0; i < n; i++) data[i][j][1] /= o; else for (i = 0; i < n; i++) data[i][j][1] = k;
-      }
-      for (j = 0; j < m; ++j) y0[j] = 0;
-      return y0;
-    },
-    zero: d3_layout_stackOffsetZero
-  });
-  function d3_layout_stackOrderDefault(data) {
-    return d3.range(data.length);
-  }
-  function d3_layout_stackOffsetZero(data) {
-    var j = -1, m = data[0].length, y0 = [];
-    while (++j < m) y0[j] = 0;
-    return y0;
-  }
-  function d3_layout_stackMaxIndex(array) {
-    var i = 1, j = 0, v = array[0][1], k, n = array.length;
-    for (;i < n; ++i) {
-      if ((k = array[i][1]) > v) {
-        j = i;
-        v = k;
-      }
-    }
-    return j;
-  }
-  function d3_layout_stackReduceSum(d) {
-    return d.reduce(d3_layout_stackSum, 0);
-  }
-  function d3_layout_stackSum(p, d) {
-    return p + d[1];
-  }
-  d3.layout.histogram = function() {
-    var frequency = true, valuer = Number, ranger = d3_layout_histogramRange, binner = d3_layout_histogramBinSturges;
-    function histogram(data, i) {
-      var bins = [], values = data.map(valuer, this), range = ranger.call(this, values, i), thresholds = binner.call(this, range, values, i), bin, i = -1, n = values.length, m = thresholds.length - 1, k = frequency ? 1 : 1 / n, x;
-      while (++i < m) {
-        bin = bins[i] = [];
-        bin.dx = thresholds[i + 1] - (bin.x = thresholds[i]);
-        bin.y = 0;
-      }
-      if (m > 0) {
-        i = -1;
-        while (++i < n) {
-          x = values[i];
-          if (x >= range[0] && x <= range[1]) {
-            bin = bins[d3.bisect(thresholds, x, 1, m) - 1];
-            bin.y += k;
-            bin.push(data[i]);
-          }
-        }
-      }
-      return bins;
-    }
-    histogram.value = function(x) {
-      if (!arguments.length) return valuer;
-      valuer = x;
-      return histogram;
-    };
-    histogram.range = function(x) {
-      if (!arguments.length) return ranger;
-      ranger = d3_functor(x);
-      return histogram;
-    };
-    histogram.bins = function(x) {
-      if (!arguments.length) return binner;
-      binner = typeof x === "number" ? function(range) {
-        return d3_layout_histogramBinFixed(range, x);
-      } : d3_functor(x);
-      return histogram;
-    };
-    histogram.frequency = function(x) {
-      if (!arguments.length) return frequency;
-      frequency = !!x;
-      return histogram;
-    };
-    return histogram;
-  };
-  function d3_layout_histogramBinSturges(range, values) {
-    return d3_layout_histogramBinFixed(range, Math.ceil(Math.log(values.length) / Math.LN2 + 1));
-  }
-  function d3_layout_histogramBinFixed(range, n) {
-    var x = -1, b = +range[0], m = (range[1] - b) / n, f = [];
-    while (++x <= n) f[x] = m * x + b;
-    return f;
-  }
-  function d3_layout_histogramRange(values) {
-    return [ d3.min(values), d3.max(values) ];
-  }
-  d3.layout.pack = function() {
-    var hierarchy = d3.layout.hierarchy().sort(d3_layout_packSort), padding = 0, size = [ 1, 1 ], radius;
-    function pack(d, i) {
-      var nodes = hierarchy.call(this, d, i), root = nodes[0], w = size[0], h = size[1], r = radius == null ? Math.sqrt : typeof radius === "function" ? radius : function() {
-        return radius;
-      };
-      root.x = root.y = 0;
-      d3_layout_hierarchyVisitAfter(root, function(d) {
-        d.r = +r(d.value);
-      });
-      d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
-      if (padding) {
-        var dr = padding * (radius ? 1 : Math.max(2 * root.r / w, 2 * root.r / h)) / 2;
-        d3_layout_hierarchyVisitAfter(root, function(d) {
-          d.r += dr;
-        });
-        d3_layout_hierarchyVisitAfter(root, d3_layout_packSiblings);
-        d3_layout_hierarchyVisitAfter(root, function(d) {
-          d.r -= dr;
-        });
-      }
-      d3_layout_packTransform(root, w / 2, h / 2, radius ? 1 : 1 / Math.max(2 * root.r / w, 2 * root.r / h));
-      return nodes;
-    }
-    pack.size = function(_) {
-      if (!arguments.length) return size;
-      size = _;
-      return pack;
-    };
-    pack.radius = function(_) {
-      if (!arguments.length) return radius;
-      radius = _ == null || typeof _ === "function" ? _ : +_;
-      return pack;
-    };
-    pack.padding = function(_) {
-      if (!arguments.length) return padding;
-      padding = +_;
-      return pack;
-    };
-    return d3_layout_hierarchyRebind(pack, hierarchy);
-  };
-  function d3_layout_packSort(a, b) {
-    return a.value - b.value;
-  }
-  function d3_layout_packInsert(a, b) {
-    var c = a._pack_next;
-    a._pack_next = b;
-    b._pack_prev = a;
-    b._pack_next = c;
-    c._pack_prev = b;
-  }
-  function d3_layout_packSplice(a, b) {
-    a._pack_next = b;
-    b._pack_prev = a;
-  }
-  function d3_layout_packIntersects(a, b) {
-    var dx = b.x - a.x, dy = b.y - a.y, dr = a.r + b.r;
-    return .999 * dr * dr > dx * dx + dy * dy;
-  }
-  function d3_layout_packSiblings(node) {
-    if (!(nodes = node.children) || !(n = nodes.length)) return;
-    var nodes, xMin = Infinity, xMax = -Infinity, yMin = Infinity, yMax = -Infinity, a, b, c, i, j, k, n;
-    function bound(node) {
-      xMin = Math.min(node.x - node.r, xMin);
-      xMax = Math.max(node.x + node.r, xMax);
-      yMin = Math.min(node.y - node.r, yMin);
-      yMax = Math.max(node.y + node.r, yMax);
-    }
-    nodes.forEach(d3_layout_packLink);
-    a = nodes[0];
-    a.x = -a.r;
-    a.y = 0;
-    bound(a);
-    if (n > 1) {
-      b = nodes[1];
-      b.x = b.r;
-      b.y = 0;
-      bound(b);
-      if (n > 2) {
-        c = nodes[2];
-        d3_layout_packPlace(a, b, c);
-        bound(c);
-        d3_layout_packInsert(a, c);
-        a._pack_prev = c;
-        d3_layout_packInsert(c, b);
-        b = a._pack_next;
-        for (i = 3; i < n; i++) {
-          d3_layout_packPlace(a, b, c = nodes[i]);
-          var isect = 0, s1 = 1, s2 = 1;
-          for (j = b._pack_next; j !== b; j = j._pack_next, s1++) {
-            if (d3_layout_packIntersects(j, c)) {
-              isect = 1;
-              break;
-            }
-          }
-          if (isect == 1) {
-            for (k = a._pack_prev; k !== j._pack_prev; k = k._pack_prev, s2++) {
-              if (d3_layout_packIntersects(k, c)) {
-                break;
-              }
-            }
-          }
-          if (isect) {
-            if (s1 < s2 || s1 == s2 && b.r < a.r) d3_layout_packSplice(a, b = j); else d3_layout_packSplice(a = k, b);
-            i--;
-          } else {
-            d3_layout_packInsert(a, c);
-            b = c;
-            bound(c);
-          }
-        }
-      }
-    }
-    var cx = (xMin + xMax) / 2, cy = (yMin + yMax) / 2, cr = 0;
-    for (i = 0; i < n; i++) {
-      c = nodes[i];
-      c.x -= cx;
-      c.y -= cy;
-      cr = Math.max(cr, c.r + Math.sqrt(c.x * c.x + c.y * c.y));
-    }
-    node.r = cr;
-    nodes.forEach(d3_layout_packUnlink);
-  }
-  function d3_layout_packLink(node) {
-    node._pack_next = node._pack_prev = node;
-  }
-  function d3_layout_packUnlink(node) {
-    delete node._pack_next;
-    delete node._pack_prev;
-  }
-  function d3_layout_packTransform(node, x, y, k) {
-    var children = node.children;
-    node.x = x += k * node.x;
-    node.y = y += k * node.y;
-    node.r *= k;
-    if (children) {
-      var i = -1, n = children.length;
-      while (++i < n) d3_layout_packTransform(children[i], x, y, k);
-    }
-  }
-  function d3_layout_packPlace(a, b, c) {
-    var db = a.r + c.r, dx = b.x - a.x, dy = b.y - a.y;
-    if (db && (dx || dy)) {
-      var da = b.r + c.r, dc = dx * dx + dy * dy;
-      da *= da;
-      db *= db;
-      var x = .5 + (db - da) / (2 * dc), y = Math.sqrt(Math.max(0, 2 * da * (db + dc) - (db -= dc) * db - da * da)) / (2 * dc);
-      c.x = a.x + x * dx + y * dy;
-      c.y = a.y + x * dy - y * dx;
-    } else {
-      c.x = a.x + db;
-      c.y = a.y;
-    }
-  }
-  d3.layout.tree = function() {
-    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = null;
-    function tree(d, i) {
-      var nodes = hierarchy.call(this, d, i), root0 = nodes[0], root1 = wrapTree(root0);
-      d3_layout_hierarchyVisitAfter(root1, firstWalk), root1.parent.m = -root1.z;
-      d3_layout_hierarchyVisitBefore(root1, secondWalk);
-      if (nodeSize) d3_layout_hierarchyVisitBefore(root0, sizeNode); else {
-        var left = root0, right = root0, bottom = root0;
-        d3_layout_hierarchyVisitBefore(root0, function(node) {
-          if (node.x < left.x) left = node;
-          if (node.x > right.x) right = node;
-          if (node.depth > bottom.depth) bottom = node;
-        });
-        var tx = separation(left, right) / 2 - left.x, kx = size[0] / (right.x + separation(right, left) / 2 + tx), ky = size[1] / (bottom.depth || 1);
-        d3_layout_hierarchyVisitBefore(root0, function(node) {
-          node.x = (node.x + tx) * kx;
-          node.y = node.depth * ky;
-        });
-      }
-      return nodes;
-    }
-    function wrapTree(root0) {
-      var root1 = {
-        A: null,
-        children: [ root0 ]
-      }, queue = [ root1 ], node1;
-      while ((node1 = queue.pop()) != null) {
-        for (var children = node1.children, child, i = 0, n = children.length; i < n; ++i) {
-          queue.push((children[i] = child = {
-            _: children[i],
-            parent: node1,
-            children: (child = children[i].children) && child.slice() || [],
-            A: null,
-            a: null,
-            z: 0,
-            m: 0,
-            c: 0,
-            s: 0,
-            t: null,
-            i: i
-          }).a = child);
-        }
-      }
-      return root1.children[0];
-    }
-    function firstWalk(v) {
-      var children = v.children, siblings = v.parent.children, w = v.i ? siblings[v.i - 1] : null;
-      if (children.length) {
-        d3_layout_treeShift(v);
-        var midpoint = (children[0].z + children[children.length - 1].z) / 2;
-        if (w) {
-          v.z = w.z + separation(v._, w._);
-          v.m = v.z - midpoint;
-        } else {
-          v.z = midpoint;
-        }
-      } else if (w) {
-        v.z = w.z + separation(v._, w._);
-      }
-      v.parent.A = apportion(v, w, v.parent.A || siblings[0]);
-    }
-    function secondWalk(v) {
-      v._.x = v.z + v.parent.m;
-      v.m += v.parent.m;
-    }
-    function apportion(v, w, ancestor) {
-      if (w) {
-        var vip = v, vop = v, vim = w, vom = vip.parent.children[0], sip = vip.m, sop = vop.m, sim = vim.m, som = vom.m, shift;
-        while (vim = d3_layout_treeRight(vim), vip = d3_layout_treeLeft(vip), vim && vip) {
-          vom = d3_layout_treeLeft(vom);
-          vop = d3_layout_treeRight(vop);
-          vop.a = v;
-          shift = vim.z + sim - vip.z - sip + separation(vim._, vip._);
-          if (shift > 0) {
-            d3_layout_treeMove(d3_layout_treeAncestor(vim, v, ancestor), v, shift);
-            sip += shift;
-            sop += shift;
-          }
-          sim += vim.m;
-          sip += vip.m;
-          som += vom.m;
-          sop += vop.m;
-        }
-        if (vim && !d3_layout_treeRight(vop)) {
-          vop.t = vim;
-          vop.m += sim - sop;
-        }
-        if (vip && !d3_layout_treeLeft(vom)) {
-          vom.t = vip;
-          vom.m += sip - som;
-          ancestor = v;
-        }
-      }
-      return ancestor;
-    }
-    function sizeNode(node) {
-      node.x *= size[0];
-      node.y = node.depth * size[1];
-    }
-    tree.separation = function(x) {
-      if (!arguments.length) return separation;
-      separation = x;
-      return tree;
-    };
-    tree.size = function(x) {
-      if (!arguments.length) return nodeSize ? null : size;
-      nodeSize = (size = x) == null ? sizeNode : null;
-      return tree;
-    };
-    tree.nodeSize = function(x) {
-      if (!arguments.length) return nodeSize ? size : null;
-      nodeSize = (size = x) == null ? null : sizeNode;
-      return tree;
-    };
-    return d3_layout_hierarchyRebind(tree, hierarchy);
-  };
-  function d3_layout_treeSeparation(a, b) {
-    return a.parent == b.parent ? 1 : 2;
-  }
-  function d3_layout_treeLeft(v) {
-    var children = v.children;
-    return children.length ? children[0] : v.t;
-  }
-  function d3_layout_treeRight(v) {
-    var children = v.children, n;
-    return (n = children.length) ? children[n - 1] : v.t;
-  }
-  function d3_layout_treeMove(wm, wp, shift) {
-    var change = shift / (wp.i - wm.i);
-    wp.c -= change;
-    wp.s += shift;
-    wm.c += change;
-    wp.z += shift;
-    wp.m += shift;
-  }
-  function d3_layout_treeShift(v) {
-    var shift = 0, change = 0, children = v.children, i = children.length, w;
-    while (--i >= 0) {
-      w = children[i];
-      w.z += shift;
-      w.m += shift;
-      shift += w.s + (change += w.c);
-    }
-  }
-  function d3_layout_treeAncestor(vim, v, ancestor) {
-    return vim.a.parent === v.parent ? vim.a : ancestor;
-  }
-  d3.layout.cluster = function() {
-    var hierarchy = d3.layout.hierarchy().sort(null).value(null), separation = d3_layout_treeSeparation, size = [ 1, 1 ], nodeSize = false;
-    function cluster(d, i) {
-      var nodes = hierarchy.call(this, d, i), root = nodes[0], previousNode, x = 0;
-      d3_layout_hierarchyVisitAfter(root, function(node) {
-        var children = node.children;
-        if (children && children.length) {
-          node.x = d3_layout_clusterX(children);
-          node.y = d3_layout_clusterY(children);
-        } else {
-          node.x = previousNode ? x += separation(node, previousNode) : 0;
-          node.y = 0;
-          previousNode = node;
-        }
-      });
-      var left = d3_layout_clusterLeft(root), right = d3_layout_clusterRight(root), x0 = left.x - separation(left, right) / 2, x1 = right.x + separation(right, left) / 2;
-      d3_layout_hierarchyVisitAfter(root, nodeSize ? function(node) {
-        node.x = (node.x - root.x) * size[0];
-        node.y = (root.y - node.y) * size[1];
-      } : function(node) {
-        node.x = (node.x - x0) / (x1 - x0) * size[0];
-        node.y = (1 - (root.y ? node.y / root.y : 1)) * size[1];
-      });
-      return nodes;
-    }
-    cluster.separation = function(x) {
-      if (!arguments.length) return separation;
-      separation = x;
-      return cluster;
-    };
-    cluster.size = function(x) {
-      if (!arguments.length) return nodeSize ? null : size;
-      nodeSize = (size = x) == null;
-      return cluster;
-    };
-    cluster.nodeSize = function(x) {
-      if (!arguments.length) return nodeSize ? size : null;
-      nodeSize = (size = x) != null;
-      return cluster;
-    };
-    return d3_layout_hierarchyRebind(cluster, hierarchy);
-  };
-  function d3_layout_clusterY(children) {
-    return 1 + d3.max(children, function(child) {
-      return child.y;
-    });
-  }
-  function d3_layout_clusterX(children) {
-    return children.reduce(function(x, child) {
-      return x + child.x;
-    }, 0) / children.length;
-  }
-  function d3_layout_clusterLeft(node) {
-    var children = node.children;
-    return children && children.length ? d3_layout_clusterLeft(children[0]) : node;
-  }
-  function d3_layout_clusterRight(node) {
-    var children = node.children, n;
-    return children && (n = children.length) ? d3_layout_clusterRight(children[n - 1]) : node;
-  }
-  d3.layout.treemap = function() {
-    var hierarchy = d3.layout.hierarchy(), round = Math.round, size = [ 1, 1 ], padding = null, pad = d3_layout_treemapPadNull, sticky = false, stickies, mode = "squarify", ratio = .5 * (1 + Math.sqrt(5));
-    function scale(children, k) {
-      var i = -1, n = children.length, child, area;
-      while (++i < n) {
-        area = (child = children[i]).value * (k < 0 ? 0 : k);
-        child.area = isNaN(area) || area <= 0 ? 0 : area;
-      }
-    }
-    function squarify(node) {
-      var children = node.children;
-      if (children && children.length) {
-        var rect = pad(node), row = [], remaining = children.slice(), child, best = Infinity, score, u = mode === "slice" ? rect.dx : mode === "dice" ? rect.dy : mode === "slice-dice" ? node.depth & 1 ? rect.dy : rect.dx : Math.min(rect.dx, rect.dy), n;
-        scale(remaining, rect.dx * rect.dy / node.value);
-        row.area = 0;
-        while ((n = remaining.length) > 0) {
-          row.push(child = remaining[n - 1]);
-          row.area += child.area;
-          if (mode !== "squarify" || (score = worst(row, u)) <= best) {
-            remaining.pop();
-            best = score;
-          } else {
-            row.area -= row.pop().area;
-            position(row, u, rect, false);
-            u = Math.min(rect.dx, rect.dy);
-            row.length = row.area = 0;
-            best = Infinity;
-          }
-        }
-        if (row.length) {
-          position(row, u, rect, true);
-          row.length = row.area = 0;
-        }
-        children.forEach(squarify);
-      }
-    }
-    function stickify(node) {
-      var children = node.children;
-      if (children && children.length) {
-        var rect = pad(node), remaining = children.slice(), child, row = [];
-        scale(remaining, rect.dx * rect.dy / node.value);
-        row.area = 0;
-        while (child = remaining.pop()) {
-          row.push(child);
-          row.area += child.area;
-          if (child.z != null) {
-            position(row, child.z ? rect.dx : rect.dy, rect, !remaining.length);
-            row.length = row.area = 0;
-          }
-        }
-        children.forEach(stickify);
-      }
-    }
-    function worst(row, u) {
-      var s = row.area, r, rmax = 0, rmin = Infinity, i = -1, n = row.length;
-      while (++i < n) {
-        if (!(r = row[i].area)) continue;
-        if (r < rmin) rmin = r;
-        if (r > rmax) rmax = r;
-      }
-      s *= s;
-      u *= u;
-      return s ? Math.max(u * rmax * ratio / s, s / (u * rmin * ratio)) : Infinity;
-    }
-    function position(row, u, rect, flush) {
-      var i = -1, n = row.length, x = rect.x, y = rect.y, v = u ? round(row.area / u) : 0, o;
-      if (u == rect.dx) {
-        if (flush || v > rect.dy) v = rect.dy;
-        while (++i < n) {
-          o = row[i];
-          o.x = x;
-          o.y = y;
-          o.dy = v;
-          x += o.dx = Math.min(rect.x + rect.dx - x, v ? round(o.area / v) : 0);
-        }
-        o.z = true;
-        o.dx += rect.x + rect.dx - x;
-        rect.y += v;
-        rect.dy -= v;
-      } else {
-        if (flush || v > rect.dx) v = rect.dx;
-        while (++i < n) {
-          o = row[i];
-          o.x = x;
-          o.y = y;
-          o.dx = v;
-          y += o.dy = Math.min(rect.y + rect.dy - y, v ? round(o.area / v) : 0);
-        }
-        o.z = false;
-        o.dy += rect.y + rect.dy - y;
-        rect.x += v;
-        rect.dx -= v;
-      }
-    }
-    function treemap(d) {
-      var nodes = stickies || hierarchy(d), root = nodes[0];
-      root.x = 0;
-      root.y = 0;
-      root.dx = size[0];
-      root.dy = size[1];
-      if (stickies) hierarchy.revalue(root);
-      scale([ root ], root.dx * root.dy / root.value);
-      (stickies ? stickify : squarify)(root);
-      if (sticky) stickies = nodes;
-      return nodes;
-    }
-    treemap.size = function(x) {
-      if (!arguments.length) return size;
-      size = x;
-      return treemap;
-    };
-    treemap.padding = function(x) {
-      if (!arguments.length) return padding;
-      function padFunction(node) {
-        var p = x.call(treemap, node, node.depth);
-        return p == null ? d3_layout_treemapPadNull(node) : d3_layout_treemapPad(node, typeof p === "number" ? [ p, p, p, p ] : p);
-      }
-      function padConstant(node) {
-        return d3_layout_treemapPad(node, x);
-      }
-      var type;
-      pad = (padding = x) == null ? d3_layout_treemapPadNull : (type = typeof x) === "function" ? padFunction : type === "number" ? (x = [ x, x, x, x ], 
-      padConstant) : padConstant;
-      return treemap;
-    };
-    treemap.round = function(x) {
-      if (!arguments.length) return round != Number;
-      round = x ? Math.round : Number;
-      return treemap;
-    };
-    treemap.sticky = function(x) {
-      if (!arguments.length) return sticky;
-      sticky = x;
-      stickies = null;
-      return treemap;
-    };
-    treemap.ratio = function(x) {
-      if (!arguments.length) return ratio;
-      ratio = x;
-      return treemap;
-    };
-    treemap.mode = function(x) {
-      if (!arguments.length) return mode;
-      mode = x + "";
-      return treemap;
-    };
-    return d3_layout_hierarchyRebind(treemap, hierarchy);
-  };
-  function d3_layout_treemapPadNull(node) {
-    return {
-      x: node.x,
-      y: node.y,
-      dx: node.dx,
-      dy: node.dy
-    };
-  }
-  function d3_layout_treemapPad(node, padding) {
-    var x = node.x + padding[3], y = node.y + padding[0], dx = node.dx - padding[1] - padding[3], dy = node.dy - padding[0] - padding[2];
-    if (dx < 0) {
-      x += dx / 2;
-      dx = 0;
-    }
-    if (dy < 0) {
-      y += dy / 2;
-      dy = 0;
-    }
-    return {
-      x: x,
-      y: y,
-      dx: dx,
-      dy: dy
-    };
-  }
-  d3.random = {
-    normal: function(µ, σ) {
-      var n = arguments.length;
-      if (n < 2) σ = 1;
-      if (n < 1) µ = 0;
-      return function() {
-        var x, y, r;
-        do {
-          x = Math.random() * 2 - 1;
-          y = Math.random() * 2 - 1;
-          r = x * x + y * y;
-        } while (!r || r > 1);
-        return µ + σ * x * Math.sqrt(-2 * Math.log(r) / r);
-      };
-    },
-    logNormal: function() {
-      var random = d3.random.normal.apply(d3, arguments);
-      return function() {
-        return Math.exp(random());
-      };
-    },
-    bates: function(m) {
-      var random = d3.random.irwinHall(m);
-      return function() {
-        return random() / m;
-      };
-    },
-    irwinHall: function(m) {
-      return function() {
-        for (var s = 0, j = 0; j < m; j++) s += Math.random();
-        return s;
-      };
-    }
-  };
-  d3.scale = {};
-  function d3_scaleExtent(domain) {
-    var start = domain[0], stop = domain[domain.length - 1];
-    return start < stop ? [ start, stop ] : [ stop, start ];
-  }
-  function d3_scaleRange(scale) {
-    return scale.rangeExtent ? scale.rangeExtent() : d3_scaleExtent(scale.range());
-  }
-  function d3_scale_bilinear(domain, range, uninterpolate, interpolate) {
-    var u = uninterpolate(domain[0], domain[1]), i = interpolate(range[0], range[1]);
-    return function(x) {
-      return i(u(x));
-    };
-  }
-  function d3_scale_nice(domain, nice) {
-    var i0 = 0, i1 = domain.length - 1, x0 = domain[i0], x1 = domain[i1], dx;
-    if (x1 < x0) {
-      dx = i0, i0 = i1, i1 = dx;
-      dx = x0, x0 = x1, x1 = dx;
-    }
-    domain[i0] = nice.floor(x0);
-    domain[i1] = nice.ceil(x1);
-    return domain;
-  }
-  function d3_scale_niceStep(step) {
-    return step ? {
-      floor: function(x) {
-        return Math.floor(x / step) * step;
-      },
-      ceil: function(x) {
-        return Math.ceil(x / step) * step;
-      }
-    } : d3_scale_niceIdentity;
-  }
-  var d3_scale_niceIdentity = {
-    floor: d3_identity,
-    ceil: d3_identity
-  };
-  function d3_scale_polylinear(domain, range, uninterpolate, interpolate) {
-    var u = [], i = [], j = 0, k = Math.min(domain.length, range.length) - 1;
-    if (domain[k] < domain[0]) {
-      domain = domain.slice().reverse();
-      range = range.slice().reverse();
-    }
-    while (++j <= k) {
-      u.push(uninterpolate(domain[j - 1], domain[j]));
-      i.push(interpolate(range[j - 1], range[j]));
-    }
-    return function(x) {
-      var j = d3.bisect(domain, x, 1, k) - 1;
-      return i[j](u[j](x));
-    };
-  }
-  d3.scale.linear = function() {
-    return d3_scale_linear([ 0, 1 ], [ 0, 1 ], d3_interpolate, false);
-  };
-  function d3_scale_linear(domain, range, interpolate, clamp) {
-    var output, input;
-    function rescale() {
-      var linear = Math.min(domain.length, range.length) > 2 ? d3_scale_polylinear : d3_scale_bilinear, uninterpolate = clamp ? d3_uninterpolateClamp : d3_uninterpolateNumber;
-      output = linear(domain, range, uninterpolate, interpolate);
-      input = linear(range, domain, uninterpolate, d3_interpolate);
-      return scale;
-    }
-    function scale(x) {
-      return output(x);
-    }
-    scale.invert = function(y) {
-      return input(y);
-    };
-    scale.domain = function(x) {
-      if (!arguments.length) return domain;
-      domain = x.map(Number);
-      return rescale();
-    };
-    scale.range = function(x) {
-      if (!arguments.length) return range;
-      range = x;
-      return rescale();
-    };
-    scale.rangeRound = function(x) {
-      return scale.range(x).interpolate(d3_interpolateRound);
-    };
-    scale.clamp = function(x) {
-      if (!arguments.length) return clamp;
-      clamp = x;
-      return rescale();
-    };
-    scale.interpolate = function(x) {
-      if (!arguments.length) return interpolate;
-      interpolate = x;
-      return rescale();
-    };
-    scale.ticks = function(m) {
-      return d3_scale_linearTicks(domain, m);
-    };
-    scale.tickFormat = function(m, format) {
-      return d3_scale_linearTickFormat(domain, m, format);
-    };
-    scale.nice = function(m) {
-      d3_scale_linearNice(domain, m);
-      return rescale();
-    };
-    scale.copy = function() {
-      return d3_scale_linear(domain, range, interpolate, clamp);
-    };
-    return rescale();
-  }
-  function d3_scale_linearRebind(scale, linear) {
-    return d3.rebind(scale, linear, "range", "rangeRound", "interpolate", "clamp");
-  }
-  function d3_scale_linearNice(domain, m) {
-    return d3_scale_nice(domain, d3_scale_niceStep(d3_scale_linearTickRange(domain, m)[2]));
-  }
-  function d3_scale_linearTickRange(domain, m) {
-    if (m == null) m = 10;
-    var extent = d3_scaleExtent(domain), span = extent[1] - extent[0], step = Math.pow(10, Math.floor(Math.log(span / m) / Math.LN10)), err = m / span * step;
-    if (err <= .15) step *= 10; else if (err <= .35) step *= 5; else if (err <= .75) step *= 2;
-    extent[0] = Math.ceil(extent[0] / step) * step;
-    extent[1] = Math.floor(extent[1] / step) * step + step * .5;
-    extent[2] = step;
-    return extent;
-  }
-  function d3_scale_linearTicks(domain, m) {
-    return d3.range.apply(d3, d3_scale_linearTickRange(domain, m));
-  }
-  function d3_scale_linearTickFormat(domain, m, format) {
-    var range = d3_scale_linearTickRange(domain, m);
-    if (format) {
-      var match = d3_format_re.exec(format);
-      match.shift();
-      if (match[8] === "s") {
-        var prefix = d3.formatPrefix(Math.max(abs(range[0]), abs(range[1])));
-        if (!match[7]) match[7] = "." + d3_scale_linearPrecision(prefix.scale(range[2]));
-        match[8] = "f";
-        format = d3.format(match.join(""));
-        return function(d) {
-          return format(prefix.scale(d)) + prefix.symbol;
-        };
-      }
-      if (!match[7]) match[7] = "." + d3_scale_linearFormatPrecision(match[8], range);
-      format = match.join("");
-    } else {
-      format = ",." + d3_scale_linearPrecision(range[2]) + "f";
-    }
-    return d3.format(format);
-  }
-  var d3_scale_linearFormatSignificant = {
-    s: 1,
-    g: 1,
-    p: 1,
-    r: 1,
-    e: 1
-  };
-  function d3_scale_linearPrecision(value) {
-    return -Math.floor(Math.log(value) / Math.LN10 + .01);
-  }
-  function d3_scale_linearFormatPrecision(type, range) {
-    var p = d3_scale_linearPrecision(range[2]);
-    return type in d3_scale_linearFormatSignificant ? Math.abs(p - d3_scale_linearPrecision(Math.max(abs(range[0]), abs(range[1])))) + +(type !== "e") : p - (type === "%") * 2;
-  }
-  d3.scale.log = function() {
-    return d3_scale_log(d3.scale.linear().domain([ 0, 1 ]), 10, true, [ 1, 10 ]);
-  };
-  function d3_scale_log(linear, base, positive, domain) {
-    function log(x) {
-      return (positive ? Math.log(x < 0 ? 0 : x) : -Math.log(x > 0 ? 0 : -x)) / Math.log(base);
-    }
-    function pow(x) {
-      return positive ? Math.pow(base, x) : -Math.pow(base, -x);
-    }
-    function scale(x) {
-      return linear(log(x));
-    }
-    scale.invert = function(x) {
-      return pow(linear.invert(x));
-    };
-    scale.domain = function(x) {
-      if (!arguments.length) return domain;
-      positive = x[0] >= 0;
-      linear.domain((domain = x.map(Number)).map(log));
-      return scale;
-    };
-    scale.base = function(_) {
-      if (!arguments.length) return base;
-      base = +_;
-      linear.domain(domain.map(log));
-      return scale;
-    };
-    scale.nice = function() {
-      var niced = d3_scale_nice(domain.map(log), positive ? Math : d3_scale_logNiceNegative);
-      linear.domain(niced);
-      domain = niced.map(pow);
-      return scale;
-    };
-    scale.ticks = function() {
-      var extent = d3_scaleExtent(domain), ticks = [], u = extent[0], v = extent[1], i = Math.floor(log(u)), j = Math.ceil(log(v)), n = base % 1 ? 2 : base;
-      if (isFinite(j - i)) {
-        if (positive) {
-          for (;i < j; i++) for (var k = 1; k < n; k++) ticks.push(pow(i) * k);
-          ticks.push(pow(i));
-        } else {
-          ticks.push(pow(i));
-          for (;i++ < j; ) for (var k = n - 1; k > 0; k--) ticks.push(pow(i) * k);
-        }
-        for (i = 0; ticks[i] < u; i++) {}
-        for (j = ticks.length; ticks[j - 1] > v; j--) {}
-        ticks = ticks.slice(i, j);
-      }
-      return ticks;
-    };
-    scale.tickFormat = function(n, format) {
-      if (!arguments.length) return d3_scale_logFormat;
-      if (arguments.length < 2) format = d3_scale_logFormat; else if (typeof format !== "function") format = d3.format(format);
-      var k = Math.max(.1, n / scale.ticks().length), f = positive ? (e = 1e-12, Math.ceil) : (e = -1e-12, 
-      Math.floor), e;
-      return function(d) {
-        return d / pow(f(log(d) + e)) <= k ? format(d) : "";
-      };
-    };
-    scale.copy = function() {
-      return d3_scale_log(linear.copy(), base, positive, domain);
-    };
-    return d3_scale_linearRebind(scale, linear);
-  }
-  var d3_scale_logFormat = d3.format(".0e"), d3_scale_logNiceNegative = {
-    floor: function(x) {
-      return -Math.ceil(-x);
-    },
-    ceil: function(x) {
-      return -Math.floor(-x);
-    }
-  };
-  d3.scale.pow = function() {
-    return d3_scale_pow(d3.scale.linear(), 1, [ 0, 1 ]);
-  };
-  function d3_scale_pow(linear, exponent, domain) {
-    var powp = d3_scale_powPow(exponent), powb = d3_scale_powPow(1 / exponent);
-    function scale(x) {
-      return linear(powp(x));
-    }
-    scale.invert = function(x) {
-      return powb(linear.invert(x));
-    };
-    scale.domain = function(x) {
-      if (!arguments.length) return domain;
-      linear.domain((domain = x.map(Number)).map(powp));
-      return scale;
-    };
-    scale.ticks = function(m) {
-      return d3_scale_linearTicks(domain, m);
-    };
-    scale.tickFormat = function(m, format) {
-      return d3_scale_linearTickFormat(domain, m, format);
-    };
-    scale.nice = function(m) {
-      return scale.domain(d3_scale_linearNice(domain, m));
-    };
-    scale.exponent = function(x) {
-      if (!arguments.length) return exponent;
-      powp = d3_scale_powPow(exponent = x);
-      powb = d3_scale_powPow(1 / exponent);
-      linear.domain(domain.map(powp));
-      return scale;
-    };
-    scale.copy = function() {
-      return d3_scale_pow(linear.copy(), exponent, domain);
-    };
-    return d3_scale_linearRebind(scale, linear);
-  }
-  function d3_scale_powPow(e) {
-    return function(x) {
-      return x < 0 ? -Math.pow(-x, e) : Math.pow(x, e);
-    };
-  }
-  d3.scale.sqrt = function() {
-    return d3.scale.pow().exponent(.5);
-  };
-  d3.scale.ordinal = function() {
-    return d3_scale_ordinal([], {
-      t: "range",
-      a: [ [] ]
-    });
-  };
-  function d3_scale_ordinal(domain, ranger) {
-    var index, range, rangeBand;
-    function scale(x) {
-      return range[((index.get(x) || (ranger.t === "range" ? index.set(x, domain.push(x)) : NaN)) - 1) % range.length];
-    }
-    function steps(start, step) {
-      return d3.range(domain.length).map(function(i) {
-        return start + step * i;
-      });
-    }
-    scale.domain = function(x) {
-      if (!arguments.length) return domain;
-      domain = [];
-      index = new d3_Map();
-      var i = -1, n = x.length, xi;
-      while (++i < n) if (!index.has(xi = x[i])) index.set(xi, domain.push(xi));
-      return scale[ranger.t].apply(scale, ranger.a);
-    };
-    scale.range = function(x) {
-      if (!arguments.length) return range;
-      range = x;
-      rangeBand = 0;
-      ranger = {
-        t: "range",
-        a: arguments
-      };
-      return scale;
-    };
-    scale.rangePoints = function(x, padding) {
-      if (arguments.length < 2) padding = 0;
-      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = (start + stop) / 2, 
-      0) : (stop - start) / (domain.length - 1 + padding);
-      range = steps(start + step * padding / 2, step);
-      rangeBand = 0;
-      ranger = {
-        t: "rangePoints",
-        a: arguments
-      };
-      return scale;
-    };
-    scale.rangeRoundPoints = function(x, padding) {
-      if (arguments.length < 2) padding = 0;
-      var start = x[0], stop = x[1], step = domain.length < 2 ? (start = stop = Math.round((start + stop) / 2), 
-      0) : (stop - start) / (domain.length - 1 + padding) | 0;
-      range = steps(start + Math.round(step * padding / 2 + (stop - start - (domain.length - 1 + padding) * step) / 2), step);
-      rangeBand = 0;
-      ranger = {
-        t: "rangeRoundPoints",
-        a: arguments
-      };
-      return scale;
-    };
-    scale.rangeBands = function(x, padding, outerPadding) {
-      if (arguments.length < 2) padding = 0;
-      if (arguments.length < 3) outerPadding = padding;
-      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = (stop - start) / (domain.length - padding + 2 * outerPadding);
-      range = steps(start + step * outerPadding, step);
-      if (reverse) range.reverse();
-      rangeBand = step * (1 - padding);
-      ranger = {
-        t: "rangeBands",
-        a: arguments
-      };
-      return scale;
-    };
-    scale.rangeRoundBands = function(x, padding, outerPadding) {
-      if (arguments.length < 2) padding = 0;
-      if (arguments.length < 3) outerPadding = padding;
-      var reverse = x[1] < x[0], start = x[reverse - 0], stop = x[1 - reverse], step = Math.floor((stop - start) / (domain.length - padding + 2 * outerPadding));
-      range = steps(start + Math.round((stop - start - (domain.length - padding) * step) / 2), step);
-      if (reverse) range.reverse();
-      rangeBand = Math.round(step * (1 - padding));
-      ranger = {
-        t: "rangeRoundBands",
-        a: arguments
-      };
-      return scale;
-    };
-    scale.rangeBand = function() {
-      return rangeBand;
-    };
-    scale.rangeExtent = function() {
-      return d3_scaleExtent(ranger.a[0]);
-    };
-    scale.copy = function() {
-      return d3_scale_ordinal(domain, ranger);
-    };
-    return scale.domain(domain);
-  }
-  d3.scale.category10 = function() {
-    return d3.scale.ordinal().range(d3_category10);
-  };
-  d3.scale.category20 = function() {
-    return d3.scale.ordinal().range(d3_category20);
-  };
-  d3.scale.category20b = function() {
-    return d3.scale.ordinal().range(d3_category20b);
-  };
-  d3.scale.category20c = function() {
-    return d3.scale.ordinal().range(d3_category20c);
-  };
-  var d3_category10 = [ 2062260, 16744206, 2924588, 14034728, 9725885, 9197131, 14907330, 8355711, 12369186, 1556175 ].map(d3_rgbString);
-  var d3_category20 = [ 2062260, 11454440, 16744206, 16759672, 2924588, 10018698, 14034728, 16750742, 9725885, 12955861, 9197131, 12885140, 14907330, 16234194, 8355711, 13092807, 12369186, 14408589, 1556175, 10410725 ].map(d3_rgbString);
-  var d3_category20b = [ 3750777, 5395619, 7040719, 10264286, 6519097, 9216594, 11915115, 13556636, 9202993, 12426809, 15186514, 15190932, 8666169, 11356490, 14049643, 15177372, 8077683, 10834324, 13528509, 14589654 ].map(d3_rgbString);
-  var d3_category20c = [ 3244733, 7057110, 10406625, 13032431, 15095053, 16616764, 16625259, 16634018, 3253076, 7652470, 10607003, 13101504, 7695281, 10394312, 12369372, 14342891, 6513507, 9868950, 12434877, 14277081 ].map(d3_rgbString);
-  d3.scale.quantile = function() {
-    return d3_scale_quantile([], []);
-  };
-  function d3_scale_quantile(domain, range) {
-    var thresholds;
-    function rescale() {
-      var k = 0, q = range.length;
-      thresholds = [];
-      while (++k < q) thresholds[k - 1] = d3.quantile(domain, k / q);
-      return scale;
-    }
-    function scale(x) {
-      if (!isNaN(x = +x)) return range[d3.bisect(thresholds, x)];
-    }
-    scale.domain = function(x) {
-      if (!arguments.length) return domain;
-      domain = x.map(d3_number).filter(d3_numeric).sort(d3_ascending);
-      return rescale();
-    };
-    scale.range = function(x) {
-      if (!arguments.length) return range;
-      range = x;
-      return rescale();
-    };
-    scale.quantiles = function() {
-      return thresholds;
-    };
-    scale.invertExtent = function(y) {
-      y = range.indexOf(y);
-      return y < 0 ? [ NaN, NaN ] : [ y > 0 ? thresholds[y - 1] : domain[0], y < thresholds.length ? thresholds[y] : domain[domain.length - 1] ];
-    };
-    scale.copy = function() {
-      return d3_scale_quantile(domain, range);
-    };
-    return rescale();
-  }
-  d3.scale.quantize = function() {
-    return d3_scale_quantize(0, 1, [ 0, 1 ]);
-  };
-  function d3_scale_quantize(x0, x1, range) {
-    var kx, i;
-    function scale(x) {
-      return range[Math.max(0, Math.min(i, Math.floor(kx * (x - x0))))];
-    }
-    function rescale() {
-      kx = range.length / (x1 - x0);
-      i = range.length - 1;
-      return scale;
-    }
-    scale.domain = function(x) {
-      if (!arguments.length) return [ x0, x1 ];
-      x0 = +x[0];
-      x1 = +x[x.length - 1];
-      return rescale();
-    };
-    scale.range = function(x) {
-      if (!arguments.length) return range;
-      range = x;
-      return rescale();
-    };
-    scale.invertExtent = function(y) {
-      y = range.indexOf(y);
-      y = y < 0 ? NaN : y / kx + x0;
-      return [ y, y + 1 / kx ];
-    };
-    scale.copy = function() {
-      return d3_scale_quantize(x0, x1, range);
-    };
-    return rescale();
-  }
-  d3.scale.threshold = function() {
-    return d3_scale_threshold([ .5 ], [ 0, 1 ]);
-  };
-  function d3_scale_threshold(domain, range) {
-    function scale(x) {
-      if (x <= x) return range[d3.bisect(domain, x)];
-    }
-    scale.domain = function(_) {
-      if (!arguments.length) return domain;
-      domain = _;
-      return scale;
-    };
-    scale.range = function(_) {
-      if (!arguments.length) return range;
-      range = _;
-      return scale;
-    };
-    scale.invertExtent = function(y) {
-      y = range.indexOf(y);
-      return [ domain[y - 1], domain[y] ];
-    };
-    scale.copy = function() {
-      return d3_scale_threshold(domain, range);
-    };
-    return scale;
-  }
-  d3.scale.identity = function() {
-    return d3_scale_identity([ 0, 1 ]);
-  };
-  function d3_scale_identity(domain) {
-    function identity(x) {
-      return +x;
-    }
-    identity.invert = identity;
-    identity.domain = identity.range = function(x) {
-      if (!arguments.length) return domain;
-      domain = x.map(identity);
-      return identity;
-    };
-    identity.ticks = function(m) {
-      return d3_scale_linearTicks(domain, m);
-    };
-    identity.tickFormat = function(m, format) {
-      return d3_scale_linearTickFormat(domain, m, format);
-    };
-    identity.copy = function() {
-      return d3_scale_identity(domain);
-    };
-    return identity;
-  }
-  d3.svg = {};
-  function d3_zero() {
-    return 0;
-  }
-  d3.svg.arc = function() {
-    var innerRadius = d3_svg_arcInnerRadius, outerRadius = d3_svg_arcOuterRadius, cornerRadius = d3_zero, padRadius = d3_svg_arcAuto, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle, padAngle = d3_svg_arcPadAngle;
-    function arc() {
-      var r0 = Math.max(0, +innerRadius.apply(this, arguments)), r1 = Math.max(0, +outerRadius.apply(this, arguments)), a0 = startAngle.apply(this, arguments) - halfπ, a1 = endAngle.apply(this, arguments) - halfπ, da = Math.abs(a1 - a0), cw = a0 > a1 ? 0 : 1;
-      if (r1 < r0) rc = r1, r1 = r0, r0 = rc;
-      if (da >= τε) return circleSegment(r1, cw) + (r0 ? circleSegment(r0, 1 - cw) : "") + "Z";
-      var rc, cr, rp, ap, p0 = 0, p1 = 0, x0, y0, x1, y1, x2, y2, x3, y3, path = [];
-      if (ap = (+padAngle.apply(this, arguments) || 0) / 2) {
-        rp = padRadius === d3_svg_arcAuto ? Math.sqrt(r0 * r0 + r1 * r1) : +padRadius.apply(this, arguments);
-        if (!cw) p1 *= -1;
-        if (r1) p1 = d3_asin(rp / r1 * Math.sin(ap));
-        if (r0) p0 = d3_asin(rp / r0 * Math.sin(ap));
-      }
-      if (r1) {
-        x0 = r1 * Math.cos(a0 + p1);
-        y0 = r1 * Math.sin(a0 + p1);
-        x1 = r1 * Math.cos(a1 - p1);
-        y1 = r1 * Math.sin(a1 - p1);
-        var l1 = Math.abs(a1 - a0 - 2 * p1) <= π ? 0 : 1;
-        if (p1 && d3_svg_arcSweep(x0, y0, x1, y1) === cw ^ l1) {
-          var h1 = (a0 + a1) / 2;
-          x0 = r1 * Math.cos(h1);
-          y0 = r1 * Math.sin(h1);
-          x1 = y1 = null;
-        }
-      } else {
-        x0 = y0 = 0;
-      }
-      if (r0) {
-        x2 = r0 * Math.cos(a1 - p0);
-        y2 = r0 * Math.sin(a1 - p0);
-        x3 = r0 * Math.cos(a0 + p0);
-        y3 = r0 * Math.sin(a0 + p0);
-        var l0 = Math.abs(a0 - a1 + 2 * p0) <= π ? 0 : 1;
-        if (p0 && d3_svg_arcSweep(x2, y2, x3, y3) === 1 - cw ^ l0) {
-          var h0 = (a0 + a1) / 2;
-          x2 = r0 * Math.cos(h0);
-          y2 = r0 * Math.sin(h0);
-          x3 = y3 = null;
-        }
-      } else {
-        x2 = y2 = 0;
-      }
-      if ((rc = Math.min(Math.abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments))) > .001) {
-        cr = r0 < r1 ^ cw ? 0 : 1;
-        var oc = x3 == null ? [ x2, y2 ] : x1 == null ? [ x0, y0 ] : d3_geom_polygonIntersect([ x0, y0 ], [ x3, y3 ], [ x1, y1 ], [ x2, y2 ]), ax = x0 - oc[0], ay = y0 - oc[1], bx = x1 - oc[0], by = y1 - oc[1], kc = 1 / Math.sin(Math.acos((ax * bx + ay * by) / (Math.sqrt(ax * ax + ay * ay) * Math.sqrt(bx * bx + by * by))) / 2), lc = Math.sqrt(oc[0] * oc[0] + oc[1] * oc[1]);
-        if (x1 != null) {
-          var rc1 = Math.min(rc, (r1 - lc) / (kc + 1)), t30 = d3_svg_arcCornerTangents(x3 == null ? [ x2, y2 ] : [ x3, y3 ], [ x0, y0 ], r1, rc1, cw), t12 = d3_svg_arcCornerTangents([ x1, y1 ], [ x2, y2 ], r1, rc1, cw);
-          if (rc === rc1) {
-            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 0,", cr, " ", t30[1], "A", r1, ",", r1, " 0 ", 1 - cw ^ d3_svg_arcSweep(t30[1][0], t30[1][1], t12[1][0], t12[1][1]), ",", cw, " ", t12[1], "A", rc1, ",", rc1, " 0 0,", cr, " ", t12[0]);
-          } else {
-            path.push("M", t30[0], "A", rc1, ",", rc1, " 0 1,", cr, " ", t12[0]);
-          }
-        } else {
-          path.push("M", x0, ",", y0);
-        }
-        if (x3 != null) {
-          var rc0 = Math.min(rc, (r0 - lc) / (kc - 1)), t03 = d3_svg_arcCornerTangents([ x0, y0 ], [ x3, y3 ], r0, -rc0, cw), t21 = d3_svg_arcCornerTangents([ x2, y2 ], x1 == null ? [ x0, y0 ] : [ x1, y1 ], r0, -rc0, cw);
-          if (rc === rc0) {
-            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t21[1], "A", r0, ",", r0, " 0 ", cw ^ d3_svg_arcSweep(t21[1][0], t21[1][1], t03[1][0], t03[1][1]), ",", 1 - cw, " ", t03[1], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
-          } else {
-            path.push("L", t21[0], "A", rc0, ",", rc0, " 0 0,", cr, " ", t03[0]);
-          }
-        } else {
-          path.push("L", x2, ",", y2);
-        }
-      } else {
-        path.push("M", x0, ",", y0);
-        if (x1 != null) path.push("A", r1, ",", r1, " 0 ", l1, ",", cw, " ", x1, ",", y1);
-        path.push("L", x2, ",", y2);
-        if (x3 != null) path.push("A", r0, ",", r0, " 0 ", l0, ",", 1 - cw, " ", x3, ",", y3);
-      }
-      path.push("Z");
-      return path.join("");
-    }
-    function circleSegment(r1, cw) {
-      return "M0," + r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + -r1 + "A" + r1 + "," + r1 + " 0 1," + cw + " 0," + r1;
-    }
-    arc.innerRadius = function(v) {
-      if (!arguments.length) return innerRadius;
-      innerRadius = d3_functor(v);
-      return arc;
-    };
-    arc.outerRadius = function(v) {
-      if (!arguments.length) return outerRadius;
-      outerRadius = d3_functor(v);
-      return arc;
-    };
-    arc.cornerRadius = function(v) {
-      if (!arguments.length) return cornerRadius;
-      cornerRadius = d3_functor(v);
-      return arc;
-    };
-    arc.padRadius = function(v) {
-      if (!arguments.length) return padRadius;
-      padRadius = v == d3_svg_arcAuto ? d3_svg_arcAuto : d3_functor(v);
-      return arc;
-    };
-    arc.startAngle = function(v) {
-      if (!arguments.length) return startAngle;
-      startAngle = d3_functor(v);
-      return arc;
-    };
-    arc.endAngle = function(v) {
-      if (!arguments.length) return endAngle;
-      endAngle = d3_functor(v);
-      return arc;
-    };
-    arc.padAngle = function(v) {
-      if (!arguments.length) return padAngle;
-      padAngle = d3_functor(v);
-      return arc;
-    };
-    arc.centroid = function() {
-      var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - halfπ;
-      return [ Math.cos(a) * r, Math.sin(a) * r ];
-    };
-    return arc;
-  };
-  var d3_svg_arcAuto = "auto";
-  function d3_svg_arcInnerRadius(d) {
-    return d.innerRadius;
-  }
-  function d3_svg_arcOuterRadius(d) {
-    return d.outerRadius;
-  }
-  function d3_svg_arcStartAngle(d) {
-    return d.startAngle;
-  }
-  function d3_svg_arcEndAngle(d) {
-    return d.endAngle;
-  }
-  function d3_svg_arcPadAngle(d) {
-    return d && d.padAngle;
-  }
-  function d3_svg_arcSweep(x0, y0, x1, y1) {
-    return (x0 - x1) * y0 - (y0 - y1) * x0 > 0 ? 0 : 1;
-  }
-  function d3_svg_arcCornerTangents(p0, p1, r1, rc, cw) {
-    var x01 = p0[0] - p1[0], y01 = p0[1] - p1[1], lo = (cw ? rc : -rc) / Math.sqrt(x01 * x01 + y01 * y01), ox = lo * y01, oy = -lo * x01, x1 = p0[0] + ox, y1 = p0[1] + oy, x2 = p1[0] + ox, y2 = p1[1] + oy, x3 = (x1 + x2) / 2, y3 = (y1 + y2) / 2, dx = x2 - x1, dy = y2 - y1, d2 = dx * dx + dy * dy, r = r1 - rc, D = x1 * y2 - x2 * y1, d = (dy < 0 ? -1 : 1) * Math.sqrt(r * r * d2 - D * D), cx0 = (D * dy - dx * d) / d2, cy0 = (-D * dx - dy * d) / d2, cx1 = (D * dy + dx * d) / d2, cy1 = (-D * dx + dy * d) / d2, dx0 = cx0 - x3, dy0 = cy0 - y3, dx1 = cx1 - x3, dy1 = cy1 - y3;
-    if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1) cx0 = cx1, cy0 = cy1;
-    return [ [ cx0 - ox, cy0 - oy ], [ cx0 * r1 / r, cy0 * r1 / r ] ];
-  }
-  function d3_svg_line(projection) {
-    var x = d3_geom_pointX, y = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, tension = .7;
-    function line(data) {
-      var segments = [], points = [], i = -1, n = data.length, d, fx = d3_functor(x), fy = d3_functor(y);
-      function segment() {
-        segments.push("M", interpolate(projection(points), tension));
-      }
-      while (++i < n) {
-        if (defined.call(this, d = data[i], i)) {
-          points.push([ +fx.call(this, d, i), +fy.call(this, d, i) ]);
-        } else if (points.length) {
-          segment();
-          points = [];
-        }
-      }
-      if (points.length) segment();
-      return segments.length ? segments.join("") : null;
-    }
-    line.x = function(_) {
-      if (!arguments.length) return x;
-      x = _;
-      return line;
-    };
-    line.y = function(_) {
-      if (!arguments.length) return y;
-      y = _;
-      return line;
-    };
-    line.defined = function(_) {
-      if (!arguments.length) return defined;
-      defined = _;
-      return line;
-    };
-    line.interpolate = function(_) {
-      if (!arguments.length) return interpolateKey;
-      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
-      return line;
-    };
-    line.tension = function(_) {
-      if (!arguments.length) return tension;
-      tension = _;
-      return line;
-    };
-    return line;
-  }
-  d3.svg.line = function() {
-    return d3_svg_line(d3_identity);
-  };
-  var d3_svg_lineInterpolators = d3.map({
-    linear: d3_svg_lineLinear,
-    "linear-closed": d3_svg_lineLinearClosed,
-    step: d3_svg_lineStep,
-    "step-before": d3_svg_lineStepBefore,
-    "step-after": d3_svg_lineStepAfter,
-    basis: d3_svg_lineBasis,
-    "basis-open": d3_svg_lineBasisOpen,
-    "basis-closed": d3_svg_lineBasisClosed,
-    bundle: d3_svg_lineBundle,
-    cardinal: d3_svg_lineCardinal,
-    "cardinal-open": d3_svg_lineCardinalOpen,
-    "cardinal-closed": d3_svg_lineCardinalClosed,
-    monotone: d3_svg_lineMonotone
-  });
-  d3_svg_lineInterpolators.forEach(function(key, value) {
-    value.key = key;
-    value.closed = /-closed$/.test(key);
-  });
-  function d3_svg_lineLinear(points) {
-    return points.join("L");
-  }
-  function d3_svg_lineLinearClosed(points) {
-    return d3_svg_lineLinear(points) + "Z";
-  }
-  function d3_svg_lineStep(points) {
-    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
-    while (++i < n) path.push("H", (p[0] + (p = points[i])[0]) / 2, "V", p[1]);
-    if (n > 1) path.push("H", p[0]);
-    return path.join("");
-  }
-  function d3_svg_lineStepBefore(points) {
-    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
-    while (++i < n) path.push("V", (p = points[i])[1], "H", p[0]);
-    return path.join("");
-  }
-  function d3_svg_lineStepAfter(points) {
-    var i = 0, n = points.length, p = points[0], path = [ p[0], ",", p[1] ];
-    while (++i < n) path.push("H", (p = points[i])[0], "V", p[1]);
-    return path.join("");
-  }
-  function d3_svg_lineCardinalOpen(points, tension) {
-    return points.length < 4 ? d3_svg_lineLinear(points) : points[1] + d3_svg_lineHermite(points.slice(1, -1), d3_svg_lineCardinalTangents(points, tension));
-  }
-  function d3_svg_lineCardinalClosed(points, tension) {
-    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite((points.push(points[0]), 
-    points), d3_svg_lineCardinalTangents([ points[points.length - 2] ].concat(points, [ points[1] ]), tension));
-  }
-  function d3_svg_lineCardinal(points, tension) {
-    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineCardinalTangents(points, tension));
-  }
-  function d3_svg_lineHermite(points, tangents) {
-    if (tangents.length < 1 || points.length != tangents.length && points.length != tangents.length + 2) {
-      return d3_svg_lineLinear(points);
-    }
-    var quad = points.length != tangents.length, path = "", p0 = points[0], p = points[1], t0 = tangents[0], t = t0, pi = 1;
-    if (quad) {
-      path += "Q" + (p[0] - t0[0] * 2 / 3) + "," + (p[1] - t0[1] * 2 / 3) + "," + p[0] + "," + p[1];
-      p0 = points[1];
-      pi = 2;
-    }
-    if (tangents.length > 1) {
-      t = tangents[1];
-      p = points[pi];
-      pi++;
-      path += "C" + (p0[0] + t0[0]) + "," + (p0[1] + t0[1]) + "," + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
-      for (var i = 2; i < tangents.length; i++, pi++) {
-        p = points[pi];
-        t = tangents[i];
-        path += "S" + (p[0] - t[0]) + "," + (p[1] - t[1]) + "," + p[0] + "," + p[1];
-      }
-    }
-    if (quad) {
-      var lp = points[pi];
-      path += "Q" + (p[0] + t[0] * 2 / 3) + "," + (p[1] + t[1] * 2 / 3) + "," + lp[0] + "," + lp[1];
-    }
-    return path;
-  }
-  function d3_svg_lineCardinalTangents(points, tension) {
-    var tangents = [], a = (1 - tension) / 2, p0, p1 = points[0], p2 = points[1], i = 1, n = points.length;
-    while (++i < n) {
-      p0 = p1;
-      p1 = p2;
-      p2 = points[i];
-      tangents.push([ a * (p2[0] - p0[0]), a * (p2[1] - p0[1]) ]);
-    }
-    return tangents;
-  }
-  function d3_svg_lineBasis(points) {
-    if (points.length < 3) return d3_svg_lineLinear(points);
-    var i = 1, n = points.length, pi = points[0], x0 = pi[0], y0 = pi[1], px = [ x0, x0, x0, (pi = points[1])[0] ], py = [ y0, y0, y0, pi[1] ], path = [ x0, ",", y0, "L", d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
-    points.push(points[n - 1]);
-    while (++i <= n) {
-      pi = points[i];
-      px.shift();
-      px.push(pi[0]);
-      py.shift();
-      py.push(pi[1]);
-      d3_svg_lineBasisBezier(path, px, py);
-    }
-    points.pop();
-    path.push("L", pi);
-    return path.join("");
-  }
-  function d3_svg_lineBasisOpen(points) {
-    if (points.length < 4) return d3_svg_lineLinear(points);
-    var path = [], i = -1, n = points.length, pi, px = [ 0 ], py = [ 0 ];
-    while (++i < 3) {
-      pi = points[i];
-      px.push(pi[0]);
-      py.push(pi[1]);
-    }
-    path.push(d3_svg_lineDot4(d3_svg_lineBasisBezier3, px) + "," + d3_svg_lineDot4(d3_svg_lineBasisBezier3, py));
-    --i;
-    while (++i < n) {
-      pi = points[i];
-      px.shift();
-      px.push(pi[0]);
-      py.shift();
-      py.push(pi[1]);
-      d3_svg_lineBasisBezier(path, px, py);
-    }
-    return path.join("");
-  }
-  function d3_svg_lineBasisClosed(points) {
-    var path, i = -1, n = points.length, m = n + 4, pi, px = [], py = [];
-    while (++i < 4) {
-      pi = points[i % n];
-      px.push(pi[0]);
-      py.push(pi[1]);
-    }
-    path = [ d3_svg_lineDot4(d3_svg_lineBasisBezier3, px), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, py) ];
-    --i;
-    while (++i < m) {
-      pi = points[i % n];
-      px.shift();
-      px.push(pi[0]);
-      py.shift();
-      py.push(pi[1]);
-      d3_svg_lineBasisBezier(path, px, py);
-    }
-    return path.join("");
-  }
-  function d3_svg_lineBundle(points, tension) {
-    var n = points.length - 1;
-    if (n) {
-      var x0 = points[0][0], y0 = points[0][1], dx = points[n][0] - x0, dy = points[n][1] - y0, i = -1, p, t;
-      while (++i <= n) {
-        p = points[i];
-        t = i / n;
-        p[0] = tension * p[0] + (1 - tension) * (x0 + t * dx);
-        p[1] = tension * p[1] + (1 - tension) * (y0 + t * dy);
-      }
-    }
-    return d3_svg_lineBasis(points);
-  }
-  function d3_svg_lineDot4(a, b) {
-    return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
-  }
-  var d3_svg_lineBasisBezier1 = [ 0, 2 / 3, 1 / 3, 0 ], d3_svg_lineBasisBezier2 = [ 0, 1 / 3, 2 / 3, 0 ], d3_svg_lineBasisBezier3 = [ 0, 1 / 6, 2 / 3, 1 / 6 ];
-  function d3_svg_lineBasisBezier(path, x, y) {
-    path.push("C", d3_svg_lineDot4(d3_svg_lineBasisBezier1, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier1, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier2, y), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, x), ",", d3_svg_lineDot4(d3_svg_lineBasisBezier3, y));
-  }
-  function d3_svg_lineSlope(p0, p1) {
-    return (p1[1] - p0[1]) / (p1[0] - p0[0]);
-  }
-  function d3_svg_lineFiniteDifferences(points) {
-    var i = 0, j = points.length - 1, m = [], p0 = points[0], p1 = points[1], d = m[0] = d3_svg_lineSlope(p0, p1);
-    while (++i < j) {
-      m[i] = (d + (d = d3_svg_lineSlope(p0 = p1, p1 = points[i + 1]))) / 2;
-    }
-    m[i] = d;
-    return m;
-  }
-  function d3_svg_lineMonotoneTangents(points) {
-    var tangents = [], d, a, b, s, m = d3_svg_lineFiniteDifferences(points), i = -1, j = points.length - 1;
-    while (++i < j) {
-      d = d3_svg_lineSlope(points[i], points[i + 1]);
-      if (abs(d) < ε) {
-        m[i] = m[i + 1] = 0;
-      } else {
-        a = m[i] / d;
-        b = m[i + 1] / d;
-        s = a * a + b * b;
-        if (s > 9) {
-          s = d * 3 / Math.sqrt(s);
-          m[i] = s * a;
-          m[i + 1] = s * b;
-        }
-      }
-    }
-    i = -1;
-    while (++i <= j) {
-      s = (points[Math.min(j, i + 1)][0] - points[Math.max(0, i - 1)][0]) / (6 * (1 + m[i] * m[i]));
-      tangents.push([ s || 0, m[i] * s || 0 ]);
-    }
-    return tangents;
-  }
-  function d3_svg_lineMonotone(points) {
-    return points.length < 3 ? d3_svg_lineLinear(points) : points[0] + d3_svg_lineHermite(points, d3_svg_lineMonotoneTangents(points));
-  }
-  d3.svg.line.radial = function() {
-    var line = d3_svg_line(d3_svg_lineRadial);
-    line.radius = line.x, delete line.x;
-    line.angle = line.y, delete line.y;
-    return line;
-  };
-  function d3_svg_lineRadial(points) {
-    var point, i = -1, n = points.length, r, a;
-    while (++i < n) {
-      point = points[i];
-      r = point[0];
-      a = point[1] - halfπ;
-      point[0] = r * Math.cos(a);
-      point[1] = r * Math.sin(a);
-    }
-    return points;
-  }
-  function d3_svg_area(projection) {
-    var x0 = d3_geom_pointX, x1 = d3_geom_pointX, y0 = 0, y1 = d3_geom_pointY, defined = d3_true, interpolate = d3_svg_lineLinear, interpolateKey = interpolate.key, interpolateReverse = interpolate, L = "L", tension = .7;
-    function area(data) {
-      var segments = [], points0 = [], points1 = [], i = -1, n = data.length, d, fx0 = d3_functor(x0), fy0 = d3_functor(y0), fx1 = x0 === x1 ? function() {
-        return x;
-      } : d3_functor(x1), fy1 = y0 === y1 ? function() {
-        return y;
-      } : d3_functor(y1), x, y;
-      function segment() {
-        segments.push("M", interpolate(projection(points1), tension), L, interpolateReverse(projection(points0.reverse()), tension), "Z");
-      }
-      while (++i < n) {
-        if (defined.call(this, d = data[i], i)) {
-          points0.push([ x = +fx0.call(this, d, i), y = +fy0.call(this, d, i) ]);
-          points1.push([ +fx1.call(this, d, i), +fy1.call(this, d, i) ]);
-        } else if (points0.length) {
-          segment();
-          points0 = [];
-          points1 = [];
-        }
-      }
-      if (points0.length) segment();
-      return segments.length ? segments.join("") : null;
-    }
-    area.x = function(_) {
-      if (!arguments.length) return x1;
-      x0 = x1 = _;
-      return area;
-    };
-    area.x0 = function(_) {
-      if (!arguments.length) return x0;
-      x0 = _;
-      return area;
-    };
-    area.x1 = function(_) {
-      if (!arguments.length) return x1;
-      x1 = _;
-      return area;
-    };
-    area.y = function(_) {
-      if (!arguments.length) return y1;
-      y0 = y1 = _;
-      return area;
-    };
-    area.y0 = function(_) {
-      if (!arguments.length) return y0;
-      y0 = _;
-      return area;
-    };
-    area.y1 = function(_) {
-      if (!arguments.length) return y1;
-      y1 = _;
-      return area;
-    };
-    area.defined = function(_) {
-      if (!arguments.length) return defined;
-      defined = _;
-      return area;
-    };
-    area.interpolate = function(_) {
-      if (!arguments.length) return interpolateKey;
-      if (typeof _ === "function") interpolateKey = interpolate = _; else interpolateKey = (interpolate = d3_svg_lineInterpolators.get(_) || d3_svg_lineLinear).key;
-      interpolateReverse = interpolate.reverse || interpolate;
-      L = interpolate.closed ? "M" : "L";
-      return area;
-    };
-    area.tension = function(_) {
-      if (!arguments.length) return tension;
-      tension = _;
-      return area;
-    };
-    return area;
-  }
-  d3_svg_lineStepBefore.reverse = d3_svg_lineStepAfter;
-  d3_svg_lineStepAfter.reverse = d3_svg_lineStepBefore;
-  d3.svg.area = function() {
-    return d3_svg_area(d3_identity);
-  };
-  d3.svg.area.radial = function() {
-    var area = d3_svg_area(d3_svg_lineRadial);
-    area.radius = area.x, delete area.x;
-    area.innerRadius = area.x0, delete area.x0;
-    area.outerRadius = area.x1, delete area.x1;
-    area.angle = area.y, delete area.y;
-    area.startAngle = area.y0, delete area.y0;
-    area.endAngle = area.y1, delete area.y1;
-    return area;
-  };
-  d3.svg.chord = function() {
-    var source = d3_source, target = d3_target, radius = d3_svg_chordRadius, startAngle = d3_svg_arcStartAngle, endAngle = d3_svg_arcEndAngle;
-    function chord(d, i) {
-      var s = subgroup(this, source, d, i), t = subgroup(this, target, d, i);
-      return "M" + s.p0 + arc(s.r, s.p1, s.a1 - s.a0) + (equals(s, t) ? curve(s.r, s.p1, s.r, s.p0) : curve(s.r, s.p1, t.r, t.p0) + arc(t.r, t.p1, t.a1 - t.a0) + curve(t.r, t.p1, s.r, s.p0)) + "Z";
-    }
-    function subgroup(self, f, d, i) {
-      var subgroup = f.call(self, d, i), r = radius.call(self, subgroup, i), a0 = startAngle.call(self, subgroup, i) - halfπ, a1 = endAngle.call(self, subgroup, i) - halfπ;
-      return {
-        r: r,
-        a0: a0,
-        a1: a1,
-        p0: [ r * Math.cos(a0), r * Math.sin(a0) ],
-        p1: [ r * Math.cos(a1), r * Math.sin(a1) ]
-      };
-    }
-    function equals(a, b) {
-      return a.a0 == b.a0 && a.a1 == b.a1;
-    }
-    function arc(r, p, a) {
-      return "A" + r + "," + r + " 0 " + +(a > π) + ",1 " + p;
-    }
-    function curve(r0, p0, r1, p1) {
-      return "Q 0,0 " + p1;
-    }
-    chord.radius = function(v) {
-      if (!arguments.length) return radius;
-      radius = d3_functor(v);
-      return chord;
-    };
-    chord.source = function(v) {
-      if (!arguments.length) return source;
-      source = d3_functor(v);
-      return chord;
-    };
-    chord.target = function(v) {
-      if (!arguments.length) return target;
-      target = d3_functor(v);
-      return chord;
-    };
-    chord.startAngle = function(v) {
-      if (!arguments.length) return startAngle;
-      startAngle = d3_functor(v);
-      return chord;
-    };
-    chord.endAngle = function(v) {
-      if (!arguments.length) return endAngle;
-      endAngle = d3_functor(v);
-      return chord;
-    };
-    return chord;
-  };
-  function d3_svg_chordRadius(d) {
-    return d.radius;
-  }
-  d3.svg.diagonal = function() {
-    var source = d3_source, target = d3_target, projection = d3_svg_diagonalProjection;
-    function diagonal(d, i) {
-      var p0 = source.call(this, d, i), p3 = target.call(this, d, i), m = (p0.y + p3.y) / 2, p = [ p0, {
-        x: p0.x,
-        y: m
-      }, {
-        x: p3.x,
-        y: m
-      }, p3 ];
-      p = p.map(projection);
-      return "M" + p[0] + "C" + p[1] + " " + p[2] + " " + p[3];
-    }
-    diagonal.source = function(x) {
-      if (!arguments.length) return source;
-      source = d3_functor(x);
-      return diagonal;
-    };
-    diagonal.target = function(x) {
-      if (!arguments.length) return target;
-      target = d3_functor(x);
-      return diagonal;
-    };
-    diagonal.projection = function(x) {
-      if (!arguments.length) return projection;
-      projection = x;
-      return diagonal;
-    };
-    return diagonal;
-  };
-  function d3_svg_diagonalProjection(d) {
-    return [ d.x, d.y ];
-  }
-  d3.svg.diagonal.radial = function() {
-    var diagonal = d3.svg.diagonal(), projection = d3_svg_diagonalProjection, projection_ = diagonal.projection;
-    diagonal.projection = function(x) {
-      return arguments.length ? projection_(d3_svg_diagonalRadialProjection(projection = x)) : projection;
-    };
-    return diagonal;
-  };
-  function d3_svg_diagonalRadialProjection(projection) {
-    return function() {
-      var d = projection.apply(this, arguments), r = d[0], a = d[1] - halfπ;
-      return [ r * Math.cos(a), r * Math.sin(a) ];
-    };
-  }
-  d3.svg.symbol = function() {
-    var type = d3_svg_symbolType, size = d3_svg_symbolSize;
-    function symbol(d, i) {
-      return (d3_svg_symbols.get(type.call(this, d, i)) || d3_svg_symbolCircle)(size.call(this, d, i));
-    }
-    symbol.type = function(x) {
-      if (!arguments.length) return type;
-      type = d3_functor(x);
-      return symbol;
-    };
-    symbol.size = function(x) {
-      if (!arguments.length) return size;
-      size = d3_functor(x);
-      return symbol;
-    };
-    return symbol;
-  };
-  function d3_svg_symbolSize() {
-    return 64;
-  }
-  function d3_svg_symbolType() {
-    return "circle";
-  }
-  function d3_svg_symbolCircle(size) {
-    var r = Math.sqrt(size / π);
-    return "M0," + r + "A" + r + "," + r + " 0 1,1 0," + -r + "A" + r + "," + r + " 0 1,1 0," + r + "Z";
-  }
-  var d3_svg_symbols = d3.map({
-    circle: d3_svg_symbolCircle,
-    cross: function(size) {
-      var r = Math.sqrt(size / 5) / 2;
-      return "M" + -3 * r + "," + -r + "H" + -r + "V" + -3 * r + "H" + r + "V" + -r + "H" + 3 * r + "V" + r + "H" + r + "V" + 3 * r + "H" + -r + "V" + r + "H" + -3 * r + "Z";
-    },
-    diamond: function(size) {
-      var ry = Math.sqrt(size / (2 * d3_svg_symbolTan30)), rx = ry * d3_svg_symbolTan30;
-      return "M0," + -ry + "L" + rx + ",0" + " 0," + ry + " " + -rx + ",0" + "Z";
-    },
-    square: function(size) {
-      var r = Math.sqrt(size) / 2;
-      return "M" + -r + "," + -r + "L" + r + "," + -r + " " + r + "," + r + " " + -r + "," + r + "Z";
-    },
-    "triangle-down": function(size) {
-      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
-      return "M0," + ry + "L" + rx + "," + -ry + " " + -rx + "," + -ry + "Z";
-    },
-    "triangle-up": function(size) {
-      var rx = Math.sqrt(size / d3_svg_symbolSqrt3), ry = rx * d3_svg_symbolSqrt3 / 2;
-      return "M0," + -ry + "L" + rx + "," + ry + " " + -rx + "," + ry + "Z";
-    }
-  });
-  d3.svg.symbolTypes = d3_svg_symbols.keys();
-  var d3_svg_symbolSqrt3 = Math.sqrt(3), d3_svg_symbolTan30 = Math.tan(30 * d3_radians);
-  d3_selectionPrototype.transition = function(name) {
-    var id = d3_transitionInheritId || ++d3_transitionId, ns = d3_transitionNamespace(name), subgroups = [], subgroup, node, transition = d3_transitionInherit || {
-      time: Date.now(),
-      ease: d3_ease_cubicInOut,
-      delay: 0,
-      duration: 250
-    };
-    for (var j = -1, m = this.length; ++j < m; ) {
-      subgroups.push(subgroup = []);
-      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
-        if (node = group[i]) d3_transitionNode(node, i, ns, id, transition);
-        subgroup.push(node);
-      }
-    }
-    return d3_transition(subgroups, ns, id);
-  };
-  d3_selectionPrototype.interrupt = function(name) {
-    return this.each(name == null ? d3_selection_interrupt : d3_selection_interruptNS(d3_transitionNamespace(name)));
-  };
-  var d3_selection_interrupt = d3_selection_interruptNS(d3_transitionNamespace());
-  function d3_selection_interruptNS(ns) {
-    return function() {
-      var lock, active;
-      if ((lock = this[ns]) && (active = lock[lock.active])) {
-        if (--lock.count) delete lock[lock.active]; else delete this[ns];
-        lock.active += .5;
-        active.event && active.event.interrupt.call(this, this.__data__, active.index);
-      }
-    };
-  }
-  function d3_transition(groups, ns, id) {
-    d3_subclass(groups, d3_transitionPrototype);
-    groups.namespace = ns;
-    groups.id = id;
-    return groups;
-  }
-  var d3_transitionPrototype = [], d3_transitionId = 0, d3_transitionInheritId, d3_transitionInherit;
-  d3_transitionPrototype.call = d3_selectionPrototype.call;
-  d3_transitionPrototype.empty = d3_selectionPrototype.empty;
-  d3_transitionPrototype.node = d3_selectionPrototype.node;
-  d3_transitionPrototype.size = d3_selectionPrototype.size;
-  d3.transition = function(selection, name) {
-    return selection && selection.transition ? d3_transitionInheritId ? selection.transition(name) : selection : d3.selection().transition(selection);
-  };
-  d3.transition.prototype = d3_transitionPrototype;
-  d3_transitionPrototype.select = function(selector) {
-    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnode, node;
-    selector = d3_selection_selector(selector);
-    for (var j = -1, m = this.length; ++j < m; ) {
-      subgroups.push(subgroup = []);
-      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
-        if ((node = group[i]) && (subnode = selector.call(node, node.__data__, i, j))) {
-          if ("__data__" in node) subnode.__data__ = node.__data__;
-          d3_transitionNode(subnode, i, ns, id, node[ns][id]);
-          subgroup.push(subnode);
-        } else {
-          subgroup.push(null);
-        }
-      }
-    }
-    return d3_transition(subgroups, ns, id);
-  };
-  d3_transitionPrototype.selectAll = function(selector) {
-    var id = this.id, ns = this.namespace, subgroups = [], subgroup, subnodes, node, subnode, transition;
-    selector = d3_selection_selectorAll(selector);
-    for (var j = -1, m = this.length; ++j < m; ) {
-      for (var group = this[j], i = -1, n = group.length; ++i < n; ) {
-        if (node = group[i]) {
-          transition = node[ns][id];
-          subnodes = selector.call(node, node.__data__, i, j);
-          subgroups.push(subgroup = []);
-          for (var k = -1, o = subnodes.length; ++k < o; ) {
-            if (subnode = subnodes[k]) d3_transitionNode(subnode, k, ns, id, transition);
-            subgroup.push(subnode);
-          }
-        }
-      }
-    }
-    return d3_transition(subgroups, ns, id);
-  };
-  d3_transitionPrototype.filter = function(filter) {
-    var subgroups = [], subgroup, group, node;
-    if (typeof filter !== "function") filter = d3_selection_filter(filter);
-    for (var j = 0, m = this.length; j < m; j++) {
-      subgroups.push(subgroup = []);
-      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
-        if ((node = group[i]) && filter.call(node, node.__data__, i, j)) {
-          subgroup.push(node);
-        }
-      }
-    }
-    return d3_transition(subgroups, this.namespace, this.id);
-  };
-  d3_transitionPrototype.tween = function(name, tween) {
-    var id = this.id, ns = this.namespace;
-    if (arguments.length < 2) return this.node()[ns][id].tween.get(name);
-    return d3_selection_each(this, tween == null ? function(node) {
-      node[ns][id].tween.remove(name);
-    } : function(node) {
-      node[ns][id].tween.set(name, tween);
-    });
-  };
-  function d3_transition_tween(groups, name, value, tween) {
-    var id = groups.id, ns = groups.namespace;
-    return d3_selection_each(groups, typeof value === "function" ? function(node, i, j) {
-      node[ns][id].tween.set(name, tween(value.call(node, node.__data__, i, j)));
-    } : (value = tween(value), function(node) {
-      node[ns][id].tween.set(name, value);
-    }));
-  }
-  d3_transitionPrototype.attr = function(nameNS, value) {
-    if (arguments.length < 2) {
-      for (value in nameNS) this.attr(value, nameNS[value]);
-      return this;
-    }
-    var interpolate = nameNS == "transform" ? d3_interpolateTransform : d3_interpolate, name = d3.ns.qualify(nameNS);
-    function attrNull() {
-      this.removeAttribute(name);
-    }
-    function attrNullNS() {
-      this.removeAttributeNS(name.space, name.local);
-    }
-    function attrTween(b) {
-      return b == null ? attrNull : (b += "", function() {
-        var a = this.getAttribute(name), i;
-        return a !== b && (i = interpolate(a, b), function(t) {
-          this.setAttribute(name, i(t));
-        });
-      });
-    }
-    function attrTweenNS(b) {
-      return b == null ? attrNullNS : (b += "", function() {
-        var a = this.getAttributeNS(name.space, name.local), i;
-        return a !== b && (i = interpolate(a, b), function(t) {
-          this.setAttributeNS(name.space, name.local, i(t));
-        });
-      });
-    }
-    return d3_transition_tween(this, "attr." + nameNS, value, name.local ? attrTweenNS : attrTween);
-  };
-  d3_transitionPrototype.attrTween = function(nameNS, tween) {
-    var name = d3.ns.qualify(nameNS);
-    function attrTween(d, i) {
-      var f = tween.call(this, d, i, this.getAttribute(name));
-      return f && function(t) {
-        this.setAttribute(name, f(t));
-      };
-    }
-    function attrTweenNS(d, i) {
-      var f = tween.call(this, d, i, this.getAttributeNS(name.space, name.local));
-      return f && function(t) {
-        this.setAttributeNS(name.space, name.local, f(t));
-      };
-    }
-    return this.tween("attr." + nameNS, name.local ? attrTweenNS : attrTween);
-  };
-  d3_transitionPrototype.style = function(name, value, priority) {
-    var n = arguments.length;
-    if (n < 3) {
-      if (typeof name !== "string") {
-        if (n < 2) value = "";
-        for (priority in name) this.style(priority, name[priority], value);
-        return this;
-      }
-      priority = "";
-    }
-    function styleNull() {
-      this.style.removeProperty(name);
-    }
-    function styleString(b) {
-      return b == null ? styleNull : (b += "", function() {
-        var a = d3_window(this).getComputedStyle(this, null).getPropertyValue(name), i;
-        return a !== b && (i = d3_interpolate(a, b), function(t) {
-          this.style.setProperty(name, i(t), priority);
-        });
-      });
-    }
-    return d3_transition_tween(this, "style." + name, value, styleString);
-  };
-  d3_transitionPrototype.styleTween = function(name, tween, priority) {
-    if (arguments.length < 3) priority = "";
-    function styleTween(d, i) {
-      var f = tween.call(this, d, i, d3_window(this).getComputedStyle(this, null).getPropertyValue(name));
-      return f && function(t) {
-        this.style.setProperty(name, f(t), priority);
-      };
-    }
-    return this.tween("style." + name, styleTween);
-  };
-  d3_transitionPrototype.text = function(value) {
-    return d3_transition_tween(this, "text", value, d3_transition_text);
-  };
-  function d3_transition_text(b) {
-    if (b == null) b = "";
-    return function() {
-      this.textContent = b;
-    };
-  }
-  d3_transitionPrototype.remove = function() {
-    var ns = this.namespace;
-    return this.each("end.transition", function() {
-      var p;
-      if (this[ns].count < 2 && (p = this.parentNode)) p.removeChild(this);
-    });
-  };
-  d3_transitionPrototype.ease = function(value) {
-    var id = this.id, ns = this.namespace;
-    if (arguments.length < 1) return this.node()[ns][id].ease;
-    if (typeof value !== "function") value = d3.ease.apply(d3, arguments);
-    return d3_selection_each(this, function(node) {
-      node[ns][id].ease = value;
-    });
-  };
-  d3_transitionPrototype.delay = function(value) {
-    var id = this.id, ns = this.namespace;
-    if (arguments.length < 1) return this.node()[ns][id].delay;
-    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
-      node[ns][id].delay = +value.call(node, node.__data__, i, j);
-    } : (value = +value, function(node) {
-      node[ns][id].delay = value;
-    }));
-  };
-  d3_transitionPrototype.duration = function(value) {
-    var id = this.id, ns = this.namespace;
-    if (arguments.length < 1) return this.node()[ns][id].duration;
-    return d3_selection_each(this, typeof value === "function" ? function(node, i, j) {
-      node[ns][id].duration = Math.max(1, value.call(node, node.__data__, i, j));
-    } : (value = Math.max(1, value), function(node) {
-      node[ns][id].duration = value;
-    }));
-  };
-  d3_transitionPrototype.each = function(type, listener) {
-    var id = this.id, ns = this.namespace;
-    if (arguments.length < 2) {
-      var inherit = d3_transitionInherit, inheritId = d3_transitionInheritId;
-      try {
-        d3_transitionInheritId = id;
-        d3_selection_each(this, function(node, i, j) {
-          d3_transitionInherit = node[ns][id];
-          type.call(node, node.__data__, i, j);
-        });
-      } finally {
-        d3_transitionInherit = inherit;
-        d3_transitionInheritId = inheritId;
-      }
-    } else {
-      d3_selection_each(this, function(node) {
-        var transition = node[ns][id];
-        (transition.event || (transition.event = d3.dispatch("start", "end", "interrupt"))).on(type, listener);
-      });
-    }
-    return this;
-  };
-  d3_transitionPrototype.transition = function() {
-    var id0 = this.id, id1 = ++d3_transitionId, ns = this.namespace, subgroups = [], subgroup, group, node, transition;
-    for (var j = 0, m = this.length; j < m; j++) {
-      subgroups.push(subgroup = []);
-      for (var group = this[j], i = 0, n = group.length; i < n; i++) {
-        if (node = group[i]) {
-          transition = node[ns][id0];
-          d3_transitionNode(node, i, ns, id1, {
-            time: transition.time,
-            ease: transition.ease,
-            delay: transition.delay + transition.duration,
-            duration: transition.duration
-          });
-        }
-        subgroup.push(node);
-      }
-    }
-    return d3_transition(subgroups, ns, id1);
-  };
-  function d3_transitionNamespace(name) {
-    return name == null ? "__transition__" : "__transition_" + name + "__";
-  }
-  function d3_transitionNode(node, i, ns, id, inherit) {
-    var lock = node[ns] || (node[ns] = {
-      active: 0,
-      count: 0
-    }), transition = lock[id];
-    if (!transition) {
-      var time = inherit.time;
-      transition = lock[id] = {
-        tween: new d3_Map(),
-        time: time,
-        delay: inherit.delay,
-        duration: inherit.duration,
-        ease: inherit.ease,
-        index: i
-      };
-      inherit = null;
-      ++lock.count;
-      d3.timer(function(elapsed) {
-        var delay = transition.delay, duration, ease, timer = d3_timer_active, tweened = [];
-        timer.t = delay + time;
-        if (delay <= elapsed) return start(elapsed - delay);
-        timer.c = start;
-        function start(elapsed) {
-          if (lock.active > id) return stop();
-          var active = lock[lock.active];
-          if (active) {
-            --lock.count;
-            delete lock[lock.active];
-            active.event && active.event.interrupt.call(node, node.__data__, active.index);
-          }
-          lock.active = id;
-          transition.event && transition.event.start.call(node, node.__data__, i);
-          transition.tween.forEach(function(key, value) {
-            if (value = value.call(node, node.__data__, i)) {
-              tweened.push(value);
-            }
-          });
-          ease = transition.ease;
-          duration = transition.duration;
-          d3.timer(function() {
-            timer.c = tick(elapsed || 1) ? d3_true : tick;
-            return 1;
-          }, 0, time);
-        }
-        function tick(elapsed) {
-          if (lock.active !== id) return 1;
-          var t = elapsed / duration, e = ease(t), n = tweened.length;
-          while (n > 0) {
-            tweened[--n].call(node, e);
-          }
-          if (t >= 1) {
-            transition.event && transition.event.end.call(node, node.__data__, i);
-            return stop();
-          }
-        }
-        function stop() {
-          if (--lock.count) delete lock[id]; else delete node[ns];
-          return 1;
-        }
-      }, 0, time);
-    }
-  }
-  d3.svg.axis = function() {
-    var scale = d3.scale.linear(), orient = d3_svg_axisDefaultOrient, innerTickSize = 6, outerTickSize = 6, tickPadding = 3, tickArguments_ = [ 10 ], tickValues = null, tickFormat_;
-    function axis(g) {
-      g.each(function() {
-        var g = d3.select(this);
-        var scale0 = this.__chart__ || scale, scale1 = this.__chart__ = scale.copy();
-        var ticks = tickValues == null ? scale1.ticks ? scale1.ticks.apply(scale1, tickArguments_) : scale1.domain() : tickValues, tickFormat = tickFormat_ == null ? scale1.tickFormat ? scale1.tickFormat.apply(scale1, tickArguments_) : d3_identity : tickFormat_, tick = g.selectAll(".tick").data(ticks, scale1), tickEnter = tick.enter().insert("g", ".domain").attr("class", "tick").style("opacity", ε), tickExit = d3.transition(tick.exit()).style("opacity", ε).remove(), tickUpdate = d3.transition(tick.order()).style("opacity", 1), tickSpacing = Math.max(innerTickSize, 0) + tickPadding, tickTransform;
-        var range = d3_scaleRange(scale1), path = g.selectAll(".domain").data([ 0 ]), pathUpdate = (path.enter().append("path").attr("class", "domain"), 
-        d3.transition(path));
-        tickEnter.append("line");
-        tickEnter.append("text");
-        var lineEnter = tickEnter.select("line"), lineUpdate = tickUpdate.select("line"), text = tick.select("text").text(tickFormat), textEnter = tickEnter.select("text"), textUpdate = tickUpdate.select("text"), sign = orient === "top" || orient === "left" ? -1 : 1, x1, x2, y1, y2;
-        if (orient === "bottom" || orient === "top") {
-          tickTransform = d3_svg_axisX, x1 = "x", y1 = "y", x2 = "x2", y2 = "y2";
-          text.attr("dy", sign < 0 ? "0em" : ".71em").style("text-anchor", "middle");
-          pathUpdate.attr("d", "M" + range[0] + "," + sign * outerTickSize + "V0H" + range[1] + "V" + sign * outerTickSize);
-        } else {
-          tickTransform = d3_svg_axisY, x1 = "y", y1 = "x", x2 = "y2", y2 = "x2";
-          text.attr("dy", ".32em").style("text-anchor", sign < 0 ? "end" : "start");
-          pathUpdate.attr("d", "M" + sign * outerTickSize + "," + range[0] + "H0V" + range[1] + "H" + sign * outerTickSize);
-        }
-        lineEnter.attr(y2, sign * innerTickSize);
-        textEnter.attr(y1, sign * tickSpacing);
-        lineUpdate.attr(x2, 0).attr(y2, sign * innerTickSize);
-        textUpdate.attr(x1, 0).attr(y1, sign * tickSpacing);
-        if (scale1.rangeBand) {
-          var x = scale1, dx = x.rangeBand() / 2;
-          scale0 = scale1 = function(d) {
-            return x(d) + dx;
-          };
-        } else if (scale0.rangeBand) {
-          scale0 = scale1;
-        } else {
-          tickExit.call(tickTransform, scale1, scale0);
-        }
-        tickEnter.call(tickTransform, scale0, scale1);
-        tickUpdate.call(tickTransform, scale1, scale1);
-      });
-    }
-    axis.scale = function(x) {
-      if (!arguments.length) return scale;
-      scale = x;
-      return axis;
-    };
-    axis.orient = function(x) {
-      if (!arguments.length) return orient;
-      orient = x in d3_svg_axisOrients ? x + "" : d3_svg_axisDefaultOrient;
-      return axis;
-    };
-    axis.ticks = function() {
-      if (!arguments.length) return tickArguments_;
-      tickArguments_ = arguments;
-      return axis;
-    };
-    axis.tickValues = function(x) {
-      if (!arguments.length) return tickValues;
-      tickValues = x;
-      return axis;
-    };
-    axis.tickFormat = function(x) {
-      if (!arguments.length) return tickFormat_;
-      tickFormat_ = x;
-      return axis;
-    };
-    axis.tickSize = function(x) {
-      var n = arguments.length;
-      if (!n) return innerTickSize;
-      innerTickSize = +x;
-      outerTickSize = +arguments[n - 1];
-      return axis;
-    };
-    axis.innerTickSize = function(x) {
-      if (!arguments.length) return innerTickSize;
-      innerTickSize = +x;
-      return axis;
-    };
-    axis.outerTickSize = function(x) {
-      if (!arguments.length) return outerTickSize;
-      outerTickSize = +x;
-      return axis;
-    };
-    axis.tickPadding = function(x) {
-      if (!arguments.length) return tickPadding;
-      tickPadding = +x;
-      return axis;
-    };
-    axis.tickSubdivide = function() {
-      return arguments.length && axis;
-    };
-    return axis;
-  };
-  var d3_svg_axisDefaultOrient = "bottom", d3_svg_axisOrients = {
-    top: 1,
-    right: 1,
-    bottom: 1,
-    left: 1
-  };
-  function d3_svg_axisX(selection, x0, x1) {
-    selection.attr("transform", function(d) {
-      var v0 = x0(d);
-      return "translate(" + (isFinite(v0) ? v0 : x1(d)) + ",0)";
-    });
-  }
-  function d3_svg_axisY(selection, y0, y1) {
-    selection.attr("transform", function(d) {
-      var v0 = y0(d);
-      return "translate(0," + (isFinite(v0) ? v0 : y1(d)) + ")";
-    });
-  }
-  d3.svg.brush = function() {
-    var event = d3_eventDispatch(brush, "brushstart", "brush", "brushend"), x = null, y = null, xExtent = [ 0, 0 ], yExtent = [ 0, 0 ], xExtentDomain, yExtentDomain, xClamp = true, yClamp = true, resizes = d3_svg_brushResizes[0];
-    function brush(g) {
-      g.each(function() {
-        var g = d3.select(this).style("pointer-events", "all").style("-webkit-tap-highlight-color", "rgba(0,0,0,0)").on("mousedown.brush", brushstart).on("touchstart.brush", brushstart);
-        var background = g.selectAll(".background").data([ 0 ]);
-        background.enter().append("rect").attr("class", "background").style("visibility", "hidden").style("cursor", "crosshair");
-        g.selectAll(".extent").data([ 0 ]).enter().append("rect").attr("class", "extent").style("cursor", "move");
-        var resize = g.selectAll(".resize").data(resizes, d3_identity);
-        resize.exit().remove();
-        resize.enter().append("g").attr("class", function(d) {
-          return "resize " + d;
-        }).style("cursor", function(d) {
-          return d3_svg_brushCursor[d];
-        }).append("rect").attr("x", function(d) {
-          return /[ew]$/.test(d) ? -3 : null;
-        }).attr("y", function(d) {
-          return /^[ns]/.test(d) ? -3 : null;
-        }).attr("width", 6).attr("height", 6).style("visibility", "hidden");
-        resize.style("display", brush.empty() ? "none" : null);
-        var gUpdate = d3.transition(g), backgroundUpdate = d3.transition(background), range;
-        if (x) {
-          range = d3_scaleRange(x);
-          backgroundUpdate.attr("x", range[0]).attr("width", range[1] - range[0]);
-          redrawX(gUpdate);
-        }
-        if (y) {
-          range = d3_scaleRange(y);
-          backgroundUpdate.attr("y", range[0]).attr("height", range[1] - range[0]);
-          redrawY(gUpdate);
-        }
-        redraw(gUpdate);
-      });
-    }
-    brush.event = function(g) {
-      g.each(function() {
-        var event_ = event.of(this, arguments), extent1 = {
-          x: xExtent,
-          y: yExtent,
-          i: xExtentDomain,
-          j: yExtentDomain
-        }, extent0 = this.__chart__ || extent1;
-        this.__chart__ = extent1;
-        if (d3_transitionInheritId) {
-          d3.select(this).transition().each("start.brush", function() {
-            xExtentDomain = extent0.i;
-            yExtentDomain = extent0.j;
-            xExtent = extent0.x;
-            yExtent = extent0.y;
-            event_({
-              type: "brushstart"
-            });
-          }).tween("brush:brush", function() {
-            var xi = d3_interpolateArray(xExtent, extent1.x), yi = d3_interpolateArray(yExtent, extent1.y);
-            xExtentDomain = yExtentDomain = null;
-            return function(t) {
-              xExtent = extent1.x = xi(t);
-              yExtent = extent1.y = yi(t);
-              event_({
-                type: "brush",
-                mode: "resize"
-              });
-            };
-          }).each("end.brush", function() {
-            xExtentDomain = extent1.i;
-            yExtentDomain = extent1.j;
-            event_({
-              type: "brush",
-              mode: "resize"
-            });
-            event_({
-              type: "brushend"
-            });
-          });
-        } else {
-          event_({
-            type: "brushstart"
-          });
-          event_({
-            type: "brush",
-            mode: "resize"
-          });
-          event_({
-            type: "brushend"
-          });
-        }
-      });
-    };
-    function redraw(g) {
-      g.selectAll(".resize").attr("transform", function(d) {
-        return "translate(" + xExtent[+/e$/.test(d)] + "," + yExtent[+/^s/.test(d)] + ")";
-      });
-    }
-    function redrawX(g) {
-      g.select(".extent").attr("x", xExtent[0]);
-      g.selectAll(".extent,.n>rect,.s>rect").attr("width", xExtent[1] - xExtent[0]);
-    }
-    function redrawY(g) {
-      g.select(".extent").attr("y", yExtent[0]);
-      g.selectAll(".extent,.e>rect,.w>rect").attr("height", yExtent[1] - yExtent[0]);
-    }
-    function brushstart() {
-      var target = this, eventTarget = d3.select(d3.event.target), event_ = event.of(target, arguments), g = d3.select(target), resizing = eventTarget.datum(), resizingX = !/^(n|s)$/.test(resizing) && x, resizingY = !/^(e|w)$/.test(resizing) && y, dragging = eventTarget.classed("extent"), dragRestore = d3_event_dragSuppress(target), center, origin = d3.mouse(target), offset;
-      var w = d3.select(d3_window(target)).on("keydown.brush", keydown).on("keyup.brush", keyup);
-      if (d3.event.changedTouches) {
-        w.on("touchmove.brush", brushmove).on("touchend.brush", brushend);
-      } else {
-        w.on("mousemove.brush", brushmove).on("mouseup.brush", brushend);
-      }
-      g.interrupt().selectAll("*").interrupt();
-      if (dragging) {
-        origin[0] = xExtent[0] - origin[0];
-        origin[1] = yExtent[0] - origin[1];
-      } else if (resizing) {
-        var ex = +/w$/.test(resizing), ey = +/^n/.test(resizing);
-        offset = [ xExtent[1 - ex] - origin[0], yExtent[1 - ey] - origin[1] ];
-        origin[0] = xExtent[ex];
-        origin[1] = yExtent[ey];
-      } else if (d3.event.altKey) center = origin.slice();
-      g.style("pointer-events", "none").selectAll(".resize").style("display", null);
-      d3.select("body").style("cursor", eventTarget.style("cursor"));
-      event_({
-        type: "brushstart"
-      });
-      brushmove();
-      function keydown() {
-        if (d3.event.keyCode == 32) {
-          if (!dragging) {
-            center = null;
-            origin[0] -= xExtent[1];
-            origin[1] -= yExtent[1];
-            dragging = 2;
-          }
-          d3_eventPreventDefault();
-        }
-      }
-      function keyup() {
-        if (d3.event.keyCode == 32 && dragging == 2) {
-          origin[0] += xExtent[1];
-          origin[1] += yExtent[1];
-          dragging = 0;
-          d3_eventPreventDefault();
-        }
-      }
-      function brushmove() {
-        var point = d3.mouse(target), moved = false;
-        if (offset) {
-          point[0] += offset[0];
-          point[1] += offset[1];
-        }
-        if (!dragging) {
-          if (d3.event.altKey) {
-            if (!center) center = [ (xExtent[0] + xExtent[1]) / 2, (yExtent[0] + yExtent[1]) / 2 ];
-            origin[0] = xExtent[+(point[0] < center[0])];
-            origin[1] = yExtent[+(point[1] < center[1])];
-          } else center = null;
-        }
-        if (resizingX && move1(point, x, 0)) {
-          redrawX(g);
-          moved = true;
-        }
-        if (resizingY && move1(point, y, 1)) {
-          redrawY(g);
-          moved = true;
-        }
-        if (moved) {
-          redraw(g);
-          event_({
-            type: "brush",
-            mode: dragging ? "move" : "resize"
-          });
-        }
-      }
-      function move1(point, scale, i) {
-        var range = d3_scaleRange(scale), r0 = range[0], r1 = range[1], position = origin[i], extent = i ? yExtent : xExtent, size = extent[1] - extent[0], min, max;
-        if (dragging) {
-          r0 -= position;
-          r1 -= size + position;
-        }
-        min = (i ? yClamp : xClamp) ? Math.max(r0, Math.min(r1, point[i])) : point[i];
-        if (dragging) {
-          max = (min += position) + size;
-        } else {
-          if (center) position = Math.max(r0, Math.min(r1, 2 * center[i] - min));
-          if (position < min) {
-            max = min;
-            min = position;
-          } else {
-            max = position;
-          }
-        }
-        if (extent[0] != min || extent[1] != max) {
-          if (i) yExtentDomain = null; else xExtentDomain = null;
-          extent[0] = min;
-          extent[1] = max;
-          return true;
-        }
-      }
-      function brushend() {
-        brushmove();
-        g.style("pointer-events", "all").selectAll(".resize").style("display", brush.empty() ? "none" : null);
-        d3.select("body").style("cursor", null);
-        w.on("mousemove.brush", null).on("mouseup.brush", null).on("touchmove.brush", null).on("touchend.brush", null).on("keydown.brush", null).on("keyup.brush", null);
-        dragRestore();
-        event_({
-          type: "brushend"
-        });
-      }
-    }
-    brush.x = function(z) {
-      if (!arguments.length) return x;
-      x = z;
-      resizes = d3_svg_brushResizes[!x << 1 | !y];
-      return brush;
-    };
-    brush.y = function(z) {
-      if (!arguments.length) return y;
-      y = z;
-      resizes = d3_svg_brushResizes[!x << 1 | !y];
-      return brush;
-    };
-    brush.clamp = function(z) {
-      if (!arguments.length) return x && y ? [ xClamp, yClamp ] : x ? xClamp : y ? yClamp : null;
-      if (x && y) xClamp = !!z[0], yClamp = !!z[1]; else if (x) xClamp = !!z; else if (y) yClamp = !!z;
-      return brush;
-    };
-    brush.extent = function(z) {
-      var x0, x1, y0, y1, t;
-      if (!arguments.length) {
-        if (x) {
-          if (xExtentDomain) {
-            x0 = xExtentDomain[0], x1 = xExtentDomain[1];
-          } else {
-            x0 = xExtent[0], x1 = xExtent[1];
-            if (x.invert) x0 = x.invert(x0), x1 = x.invert(x1);
-            if (x1 < x0) t = x0, x0 = x1, x1 = t;
-          }
-        }
-        if (y) {
-          if (yExtentDomain) {
-            y0 = yExtentDomain[0], y1 = yExtentDomain[1];
-          } else {
-            y0 = yExtent[0], y1 = yExtent[1];
-            if (y.invert) y0 = y.invert(y0), y1 = y.invert(y1);
-            if (y1 < y0) t = y0, y0 = y1, y1 = t;
-          }
-        }
-        return x && y ? [ [ x0, y0 ], [ x1, y1 ] ] : x ? [ x0, x1 ] : y && [ y0, y1 ];
-      }
-      if (x) {
-        x0 = z[0], x1 = z[1];
-        if (y) x0 = x0[0], x1 = x1[0];
-        xExtentDomain = [ x0, x1 ];
-        if (x.invert) x0 = x(x0), x1 = x(x1);
-        if (x1 < x0) t = x0, x0 = x1, x1 = t;
-        if (x0 != xExtent[0] || x1 != xExtent[1]) xExtent = [ x0, x1 ];
-      }
-      if (y) {
-        y0 = z[0], y1 = z[1];
-        if (x) y0 = y0[1], y1 = y1[1];
-        yExtentDomain = [ y0, y1 ];
-        if (y.invert) y0 = y(y0), y1 = y(y1);
-        if (y1 < y0) t = y0, y0 = y1, y1 = t;
-        if (y0 != yExtent[0] || y1 != yExtent[1]) yExtent = [ y0, y1 ];
-      }
-      return brush;
-    };
-    brush.clear = function() {
-      if (!brush.empty()) {
-        xExtent = [ 0, 0 ], yExtent = [ 0, 0 ];
-        xExtentDomain = yExtentDomain = null;
-      }
-      return brush;
-    };
-    brush.empty = function() {
-      return !!x && xExtent[0] == xExtent[1] || !!y && yExtent[0] == yExtent[1];
-    };
-    return d3.rebind(brush, event, "on");
-  };
-  var d3_svg_brushCursor = {
-    n: "ns-resize",
-    e: "ew-resize",
-    s: "ns-resize",
-    w: "ew-resize",
-    nw: "nwse-resize",
-    ne: "nesw-resize",
-    se: "nwse-resize",
-    sw: "nesw-resize"
-  };
-  var d3_svg_brushResizes = [ [ "n", "e", "s", "w", "nw", "ne", "se", "sw" ], [ "e", "w" ], [ "n", "s" ], [] ];
-  var d3_time_format = d3_time.format = d3_locale_enUS.timeFormat;
-  var d3_time_formatUtc = d3_time_format.utc;
-  var d3_time_formatIso = d3_time_formatUtc("%Y-%m-%dT%H:%M:%S.%LZ");
-  d3_time_format.iso = Date.prototype.toISOString && +new Date("2000-01-01T00:00:00.000Z") ? d3_time_formatIsoNative : d3_time_formatIso;
-  function d3_time_formatIsoNative(date) {
-    return date.toISOString();
-  }
-  d3_time_formatIsoNative.parse = function(string) {
-    var date = new Date(string);
-    return isNaN(date) ? null : date;
-  };
-  d3_time_formatIsoNative.toString = d3_time_formatIso.toString;
-  d3_time.second = d3_time_interval(function(date) {
-    return new d3_date(Math.floor(date / 1e3) * 1e3);
-  }, function(date, offset) {
-    date.setTime(date.getTime() + Math.floor(offset) * 1e3);
-  }, function(date) {
-    return date.getSeconds();
-  });
-  d3_time.seconds = d3_time.second.range;
-  d3_time.seconds.utc = d3_time.second.utc.range;
-  d3_time.minute = d3_time_interval(function(date) {
-    return new d3_date(Math.floor(date / 6e4) * 6e4);
-  }, function(date, offset) {
-    date.setTime(date.getTime() + Math.floor(offset) * 6e4);
-  }, function(date) {
-    return date.getMinutes();
-  });
-  d3_time.minutes = d3_time.minute.range;
-  d3_time.minutes.utc = d3_time.minute.utc.range;
-  d3_time.hour = d3_time_interval(function(date) {
-    var timezone = date.getTimezoneOffset() / 60;
-    return new d3_date((Math.floor(date / 36e5 - timezone) + timezone) * 36e5);
-  }, function(date, offset) {
-    date.setTime(date.getTime() + Math.floor(offset) * 36e5);
-  }, function(date) {
-    return date.getHours();
-  });
-  d3_time.hours = d3_time.hour.range;
-  d3_time.hours.utc = d3_time.hour.utc.range;
-  d3_time.month = d3_time_interval(function(date) {
-    date = d3_time.day(date);
-    date.setDate(1);
-    return date;
-  }, function(date, offset) {
-    date.setMonth(date.getMonth() + offset);
-  }, function(date) {
-    return date.getMonth();
-  });
-  d3_time.months = d3_time.month.range;
-  d3_time.months.utc = d3_time.month.utc.range;
-  function d3_time_scale(linear, methods, format) {
-    function scale(x) {
-      return linear(x);
-    }
-    scale.invert = function(x) {
-      return d3_time_scaleDate(linear.invert(x));
-    };
-    scale.domain = function(x) {
-      if (!arguments.length) return linear.domain().map(d3_time_scaleDate);
-      linear.domain(x);
-      return scale;
-    };
-    function tickMethod(extent, count) {
-      var span = extent[1] - extent[0], target = span / count, i = d3.bisect(d3_time_scaleSteps, target);
-      return i == d3_time_scaleSteps.length ? [ methods.year, d3_scale_linearTickRange(extent.map(function(d) {
-        return d / 31536e6;
-      }), count)[2] ] : !i ? [ d3_time_scaleMilliseconds, d3_scale_linearTickRange(extent, count)[2] ] : methods[target / d3_time_scaleSteps[i - 1] < d3_time_scaleSteps[i] / target ? i - 1 : i];
-    }
-    scale.nice = function(interval, skip) {
-      var domain = scale.domain(), extent = d3_scaleExtent(domain), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" && tickMethod(extent, interval);
-      if (method) interval = method[0], skip = method[1];
-      function skipped(date) {
-        return !isNaN(date) && !interval.range(date, d3_time_scaleDate(+date + 1), skip).length;
-      }
-      return scale.domain(d3_scale_nice(domain, skip > 1 ? {
-        floor: function(date) {
-          while (skipped(date = interval.floor(date))) date = d3_time_scaleDate(date - 1);
-          return date;
-        },
-        ceil: function(date) {
-          while (skipped(date = interval.ceil(date))) date = d3_time_scaleDate(+date + 1);
-          return date;
-        }
-      } : interval));
-    };
-    scale.ticks = function(interval, skip) {
-      var extent = d3_scaleExtent(scale.domain()), method = interval == null ? tickMethod(extent, 10) : typeof interval === "number" ? tickMethod(extent, interval) : !interval.range && [ {
-        range: interval
-      }, skip ];
-      if (method) interval = method[0], skip = method[1];
-      return interval.range(extent[0], d3_time_scaleDate(+extent[1] + 1), skip < 1 ? 1 : skip);
-    };
-    scale.tickFormat = function() {
-      return format;
-    };
-    scale.copy = function() {
-      return d3_time_scale(linear.copy(), methods, format);
-    };
-    return d3_scale_linearRebind(scale, linear);
-  }
-  function d3_time_scaleDate(t) {
-    return new Date(t);
-  }
-  var d3_time_scaleSteps = [ 1e3, 5e3, 15e3, 3e4, 6e4, 3e5, 9e5, 18e5, 36e5, 108e5, 216e5, 432e5, 864e5, 1728e5, 6048e5, 2592e6, 7776e6, 31536e6 ];
-  var d3_time_scaleLocalMethods = [ [ d3_time.second, 1 ], [ d3_time.second, 5 ], [ d3_time.second, 15 ], [ d3_time.second, 30 ], [ d3_time.minute, 1 ], [ d3_time.minute, 5 ], [ d3_time.minute, 15 ], [ d3_time.minute, 30 ], [ d3_time.hour, 1 ], [ d3_time.hour, 3 ], [ d3_time.hour, 6 ], [ d3_time.hour, 12 ], [ d3_time.day, 1 ], [ d3_time.day, 2 ], [ d3_time.week, 1 ], [ d3_time.month, 1 ], [ d3_time.month, 3 ], [ d3_time.year, 1 ] ];
-  var d3_time_scaleLocalFormat = d3_time_format.multi([ [ ".%L", function(d) {
-    return d.getMilliseconds();
-  } ], [ ":%S", function(d) {
-    return d.getSeconds();
-  } ], [ "%I:%M", function(d) {
-    return d.getMinutes();
-  } ], [ "%I %p", function(d) {
-    return d.getHours();
-  } ], [ "%a %d", function(d) {
-    return d.getDay() && d.getDate() != 1;
-  } ], [ "%b %d", function(d) {
-    return d.getDate() != 1;
-  } ], [ "%B", function(d) {
-    return d.getMonth();
-  } ], [ "%Y", d3_true ] ]);
-  var d3_time_scaleMilliseconds = {
-    range: function(start, stop, step) {
-      return d3.range(Math.ceil(start / step) * step, +stop, step).map(d3_time_scaleDate);
-    },
-    floor: d3_identity,
-    ceil: d3_identity
-  };
-  d3_time_scaleLocalMethods.year = d3_time.year;
-  d3_time.scale = function() {
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-  d3.xml = d3_xhrType(function(request) {
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ec(36e5*(Math.floor(n/36e5-t)+t))},function(n,t){n.setTime(n.getTime()+36e5*Math.floor(t))},function(n){return n.getHours()}),rc.hours=rc.hour.range,rc.hours.utc=rc.hour.utc.range,rc.month=Ht(function(n){return n=rc.day(n),n.setDate(1),n},function(n,t){n.setMonth(n.getMonth()+t)},function(n){return n.getMonth()}),rc.months=rc.month.range,rc.months.utc=rc.month.utc.range;var Fs=[1e3,5e3,15e3,3e4,6e4,3e5,9e5,18e5,36e5,108e5,216e5,432e5,864e5,1728e5,6048e5,2592e6,7776e6,31536e6],Os=[[rc.second,1],[rc.second,5],[rc.second,15],[rc.second,30],[rc.minute,1],[rc.minute,5],[rc.minute,15],[rc.minute,30],[rc.hour,1],[rc.hour,3],[rc.hour,6],[rc.hour,12],[rc.day,1],[rc.day,2],[rc.week,1],[rc.month,1],[rc.month,3],[rc.year,1]],Is=Us.multi([[".%L",function(n){return n.getMilliseconds()}],[":%S",function(n){return n.getSeconds()}],["%I:%M",function(n){return n.getMinutes()}],["%I %p",function(n){return n.getHours()}],["%a %d",function(n){return n.getDay()&&1!=n.getDate()}],["%b %d",function(n){return 1!=n.getDate()}],["%B",function(n){return n.getMonth()}],["%Y",Ar]]),Ys={range:function(n,t,r){return Bo.range(Math.ceil(n/r)*r,+t,r).map(Vo)},floor:At,ceil:At};Os.year=rc.year,rc.scale=function(){return Zo(Bo.scale.linear(),Os,Is)};var Zs=Os.map(function(n){return[n[0].utc,n[1]]}),Vs=js.multi([[".%L",function(n){return n.getUTCMilliseconds()}],[":%S",function(n){return n.getUTCSeconds()}],["%I:%M",function(n){return n.getUTCMinutes()}],["%I %p",function(n){return n.getUTCHours()}],["%a %d",function(n){return n.getUTCDay()&&1!=n.getUTCDate()}],["%b %d",function(n){return 1!=n.getUTCDate()}],["%B",function(n){return n.getUTCMonth()}],["%Y",Ar]]);Zs.year=rc.year.utc,rc.scale.utc=function(){return Zo(Bo.scale.linear(),Zs,Vs)},Bo.text=Ct(function(n){return n.responseText}),Bo.json=function(n,t){return Nt(n,"application/json",$o,t)},Bo.html=function(n,t){return Nt(n,"text/html",Xo,t)},Bo.xml=Ct(function(n){return n.responseXML}),"function"==typeof define&&define.amd?define(Bo):"object"==typeof module&&module.exports?module.exports=Bo:this.d3=Bo}();
\ No newline at end of file
diff --git a/public/js/lib/d3/dagre-d3.js b/public/js/lib/d3/dagre-d3.js
deleted file mode 100644
index 87e58f9..0000000
--- a/public/js/lib/d3/dagre-d3.js
+++ /dev/null
@@ -1,4615 +0,0 @@
-;(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);throw new Error("Cannot find module '"+o+"'")}var f=n[o]={exports:{}};t[o][0].call(f.exports,function(e){var n=t[o][1][e];return s(n?n:e)},f,f.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
-var global=self;/**
- * @license
- * Copyright (c) 2012-2013 Chris Pettitt
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-global.dagreD3 = require('./index');
-
-},{"./index":2}],2:[function(require,module,exports){
-/**
- * @license
- * Copyright (c) 2012-2013 Chris Pettitt
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-module.exports =  {
-  Digraph: require('graphlib').Digraph,
-  Renderer: require('./lib/Renderer'),
-  json: require('graphlib').converter.json,
-  layout: require('dagre').layout,
-  version: require('./lib/version'),
-  debug: require('dagre').debug
-};
-
-},{"./lib/Renderer":3,"./lib/version":4,"dagre":11,"graphlib":28}],3:[function(require,module,exports){
-var layout = require('dagre').layout;
-
-var d3;
-try { d3 = require('d3'); } catch (_) { d3 = window.d3; }
-
-module.exports = Renderer;
-
-function Renderer() {
-  // Set up defaults...
-  this._layout = layout();
-
-  this.drawNodes(defaultDrawNodes);
-  this.drawEdgeLabels(defaultDrawEdgeLabels);
-  this.drawEdgePaths(defaultDrawEdgePaths);
-  this.positionNodes(defaultPositionNodes);
-  this.positionEdgeLabels(defaultPositionEdgeLabels);
-  this.positionEdgePaths(defaultPositionEdgePaths);
-  this.zoomSetup(defaultZoomSetup);
-  this.zoom(defaultZoom);
-  this.transition(defaultTransition);
-  this.postLayout(defaultPostLayout);
-  this.postRender(defaultPostRender);
-
-  this.edgeInterpolate('bundle');
-  this.edgeTension(0.95);
-}
-
-Renderer.prototype.layout = function(layout) {
-  if (!arguments.length) { return this._layout; }
-  this._layout = layout;
-  return this;
-};
-
-Renderer.prototype.drawNodes = function(drawNodes) {
-  if (!arguments.length) { return this._drawNodes; }
-  this._drawNodes = bind(drawNodes, this);
-  return this;
-};
-
-Renderer.prototype.drawEdgeLabels = function(drawEdgeLabels) {
-  if (!arguments.length) { return this._drawEdgeLabels; }
-  this._drawEdgeLabels = bind(drawEdgeLabels, this);
-  return this;
-};
-
-Renderer.prototype.drawEdgePaths = function(drawEdgePaths) {
-  if (!arguments.length) { return this._drawEdgePaths; }
-  this._drawEdgePaths = bind(drawEdgePaths, this);
-  return this;
-};
-
-Renderer.prototype.positionNodes = function(positionNodes) {
-  if (!arguments.length) { return this._positionNodes; }
-  this._positionNodes = bind(positionNodes, this);
-  return this;
-};
-
-Renderer.prototype.positionEdgeLabels = function(positionEdgeLabels) {
-  if (!arguments.length) { return this._positionEdgeLabels; }
-  this._positionEdgeLabels = bind(positionEdgeLabels, this);
-  return this;
-};
-
-Renderer.prototype.positionEdgePaths = function(positionEdgePaths) {
-  if (!arguments.length) { return this._positionEdgePaths; }
-  this._positionEdgePaths = bind(positionEdgePaths, this);
-  return this;
-};
-
-Renderer.prototype.transition = function(transition) {
-  if (!arguments.length) { return this._transition; }
-  this._transition = bind(transition, this);
-  return this;
-};
-
-Renderer.prototype.zoomSetup = function(zoomSetup) {
-  if (!arguments.length) { return this._zoomSetup; }
-  this._zoomSetup = bind(zoomSetup, this);
-  return this;
-};
-
-Renderer.prototype.zoom = function(zoom) {
-  if (!arguments.length) { return this._zoom; }
-  if (zoom) {
-    this._zoom = bind(zoom, this);
-  } else {
-    delete this._zoom;
-  }
-  return this;
-};
-
-Renderer.prototype.postLayout = function(postLayout) {
-  if (!arguments.length) { return this._postLayout; }
-  this._postLayout = bind(postLayout, this);
-  return this;
-};
-
-Renderer.prototype.postRender = function(postRender) {
-  if (!arguments.length) { return this._postRender; }
-  this._postRender = bind(postRender, this);
-  return this;
-};
-
-Renderer.prototype.edgeInterpolate = function(edgeInterpolate) {
-  if (!arguments.length) { return this._edgeInterpolate; }
-  this._edgeInterpolate = edgeInterpolate;
-  return this;
-};
-
-Renderer.prototype.edgeTension = function(edgeTension) {
-  if (!arguments.length) { return this._edgeTension; }
-  this._edgeTension = edgeTension;
-  return this;
-};
-
-Renderer.prototype.run = function(graph, svg) {
-  // First copy the input graph so that it is not changed by the rendering
-  // process.
-  graph = copyAndInitGraph(graph);
-
-  // Create zoom elements
-  svg = this._zoomSetup(graph, svg);
-
-  // Create layers
-  svg
-    .selectAll('g.edgePaths, g.edgeLabels, g.nodes')
-    .data(['edgePaths', 'edgeLabels', 'nodes'])
-    .enter()
-      .append('g')
-      .attr('class', function(d) { return d; });
-
-  // Create node and edge roots, attach labels, and capture dimension
-  // information for use with layout.
-  var svgNodes = this._drawNodes(graph, svg.select('g.nodes'));
-  var svgEdgeLabels = this._drawEdgeLabels(graph, svg.select('g.edgeLabels'));
-
-  svgNodes.each(function(u) { calculateDimensions(this, graph.node(u)); });
-  svgEdgeLabels.each(function(e) { calculateDimensions(this, graph.edge(e)); });
-
-  // Now apply the layout function
-  var result = runLayout(graph, this._layout);
-
-  // Run any user-specified post layout processing
-  this._postLayout(result, svg);
-
-  var svgEdgePaths = this._drawEdgePaths(graph, svg.select('g.edgePaths'));
-
-  // Apply the layout information to the graph
-  this._positionNodes(result, svgNodes);
-  this._positionEdgeLabels(result, svgEdgeLabels);
-  this._positionEdgePaths(result, svgEdgePaths);
-
-  this._postRender(result, svg);
-
-  return result;
-};
-
-function copyAndInitGraph(graph) {
-  var copy = graph.copy();
-
-  // Init labels if they were not present in the source graph
-  copy.nodes().forEach(function(u) {
-    var value = copy.node(u);
-    if (value === undefined) {
-      value = {};
-      copy.node(u, value);
-    }
-    if (!('label' in value)) { value.label = ''; }
-  });
-
-  copy.edges().forEach(function(e) {
-    var value = copy.edge(e);
-    if (value === undefined) {
-      value = {};
-      copy.edge(e, value);
-    }
-    if (!('label' in value)) { value.label = ''; }
-  });
-
-  return copy;
-}
-
-function calculateDimensions(group, value) {
-  var bbox = group.getBBox();
-  value.width = bbox.width;
-  value.height = bbox.height;
-}
-
-function runLayout(graph, layout) {
-  var result = layout.run(graph);
-
-  // Copy labels to the result graph
-  graph.eachNode(function(u, value) { result.node(u).label = value.label; });
-  graph.eachEdge(function(e, u, v, value) { result.edge(e).label = value.label; });
-
-  return result;
-}
-
-function defaultDrawNodes(g, root) {
-  var nodes = g.nodes().filter(function(u) { return !isComposite(g, u); });
-
-  var svgNodes = root
-    .selectAll('g.node')
-    .classed('enter', false)
-    .data(nodes, function(u) { return u; });
-
-  svgNodes.selectAll('*').remove();
-
-  svgNodes
-    .enter()
-      .append('g')
-        .style('opacity', 0)
-        .attr('class', 'node enter');
-
-  svgNodes.each(function(u) { addLabel(g.node(u), d3.select(this), 10, 10); });
-
-  this._transition(svgNodes.exit())
-      .style('opacity', 0)
-      .remove();
-
-  return svgNodes;
-}
-
-function defaultDrawEdgeLabels(g, root) {
-  var svgEdgeLabels = root
-    .selectAll('g.edgeLabel')
-    .classed('enter', false)
-    .data(g.edges(), function (e) { return e; });
-
-  svgEdgeLabels.selectAll('*').remove();
-
-  svgEdgeLabels
-    .enter()
-      .append('g')
-        .style('opacity', 0)
-        .attr('class', 'edgeLabel enter');
-
-  svgEdgeLabels.each(function(e) { addLabel(g.edge(e), d3.select(this), 0, 0); });
-
-  this._transition(svgEdgeLabels.exit())
-      .style('opacity', 0)
-      .remove();
-
-  return svgEdgeLabels;
-}
-
-var defaultDrawEdgePaths = function(g, root) {
-  var svgEdgePaths = root
-    .selectAll('g.edgePath')
-    .classed('enter', false)
-    .data(g.edges(), function(e) { return e; });
-
-  svgEdgePaths
-    .enter()
-      .append('g')
-        .attr('class', 'edgePath enter')
-        .append('path')
-          .style('opacity', 0)
-          .attr('marker-end', 'url(#arrowhead)');
-
-  this._transition(svgEdgePaths.exit())
-      .style('opacity', 0)
-      .remove();
-
-  return svgEdgePaths;
-};
-
-function defaultPositionNodes(g, svgNodes) {
-  function transform(u) {
-    var value = g.node(u);
-    return 'translate(' + value.x + ',' + value.y + ')';
-  }
-
-  // For entering nodes, position immediately without transition
-  svgNodes.filter('.enter').attr('transform', transform);
-
-  this._transition(svgNodes)
-      .style('opacity', 1)
-      .attr('transform', transform);
-}
-
-function defaultPositionEdgeLabels(g, svgEdgeLabels) {
-  function transform(e) {
-    var value = g.edge(e);
-    var point = findMidPoint(value.points);
-    return 'translate(' + point.x + ',' + point.y + ')';
-  }
-
-  // For entering edge labels, position immediately without transition
-  svgEdgeLabels.filter('.enter').attr('transform', transform);
-
-  this._transition(svgEdgeLabels)
-    .style('opacity', 1)
-    .attr('transform', transform);
-}
-
-function defaultPositionEdgePaths(g, svgEdgePaths) {
-  var interpolate = this._edgeInterpolate,
-      tension = this._edgeTension;
-
-  function calcPoints(e) {
-    var value = g.edge(e);
-    var source = g.node(g.incidentNodes(e)[0]);
-    var target = g.node(g.incidentNodes(e)[1]);
-    var points = value.points.slice();
-
-    var p0 = points.length === 0 ? target : points[0];
-    var p1 = points.length === 0 ? source : points[points.length - 1];
-
-    points.unshift(intersectRect(source, p0));
-    // TODO: use bpodgursky's shortening algorithm here
-    points.push(intersectRect(target, p1));
-
-    return d3.svg.line()
-      .x(function(d) { return d.x; })
-      .y(function(d) { return d.y; })
-      .interpolate(interpolate)
-      .tension(tension)
-      (points);
-  }
-
-  svgEdgePaths.filter('.enter').selectAll('path')
-      .attr('d', calcPoints);
-
-  this._transition(svgEdgePaths.selectAll('path'))
-      .attr('d', calcPoints)
-      .style('opacity', 1);
-}
-
-// By default we do not use transitions
-function defaultTransition(selection) {
-  return selection;
-}
-
-// Setup dom for zooming
-function defaultZoomSetup(graph, svg) {
-  var root = svg.property('ownerSVGElement');
-  // If the svg node is the root, we get null, so set to svg.
-  if (!root) { root = svg; }
-  root = d3.select(root);
-
-  if (root.select('rect.overlay').empty()) {
-    // Create an overlay for capturing mouse events that don't touch foreground
-    root.append('rect')
-      .attr('class', 'overlay')
-      .attr('width', '100%')
-      .attr('height', '100%')
-      .style('fill', 'none');
-
-    // Capture the zoom behaviour from the svg
-    svg = svg.append('g')
-      .attr('class', 'zoom');
-
-    if (this._zoom) {
-      root.call(this._zoom(graph, svg));
-    }
-  }
-
-  return svg;
-}
-
-// By default allow pan and zoom
-function defaultZoom(graph, svg) {
-  return d3.behavior.zoom().on('zoom', function() {
-    svg.attr('transform', 'translate(' + d3.event.translate + ')scale(' + d3.event.scale + ')');
-  });
-}
-
-function defaultPostLayout() {
-  // Do nothing
-}
-
-function defaultPostRender(graph, root) {
-  if (graph.isDirected() && root.select('#arrowhead').empty()) {
-    root
-      .append('svg:defs')
-        .append('svg:marker')
-          .attr('id', 'arrowhead')
-          .attr('viewBox', '0 0 10 10')
-          .attr('refX', 8)
-          .attr('refY', 5)
-          .attr('markerUnits', 'strokeWidth')
-          .attr('markerWidth', 8)
-          .attr('markerHeight', 5)
-          .attr('orient', 'auto')
-          .attr('style', 'fill: #333')
-          .append('svg:path')
-            .attr('d', 'M 0 0 L 10 5 L 0 10 z');
-  }
-}
-
-function addLabel(node, root, marginX, marginY) {
-  // Add the rect first so that it appears behind the label
-  var label = node.label;
-  var rect = root.append('rect');
-  var labelSvg = root.append('g');
-
-  if (label[0] === '<') {
-    addForeignObjectLabel(label, labelSvg);
-    // No margin for HTML elements
-    marginX = marginY = 0;
-  } else {
-    addTextLabel(label,
-                 labelSvg,
-                 Math.floor(node.labelCols),
-                 node.labelCut);
-  }
-
-  var bbox = root.node().getBBox();
-
-  labelSvg.attr('transform',
-             'translate(' + (-bbox.width / 2) + ',' + (-bbox.height / 2) + ')');
-
-  rect
-    .attr('rx', 5)
-    .attr('ry', 5)
-    .attr('x', -(bbox.width / 2 + marginX))
-    .attr('y', -(bbox.height / 2 + marginY))
-    .attr('width', bbox.width + 2 * marginX)
-    .attr('height', bbox.height + 2 * marginY);
-}
-
-function addForeignObjectLabel(label, root) {
-  var fo = root
-    .append('foreignObject')
-      .attr('width', '100000');
-
-  var w, h;
-  fo
-    .append('xhtml:div')
-      .style('float', 'left')
-      // TODO find a better way to get dimensions for foreignObjects...
-      .html(function() { return label; })
-      .each(function() {
-        w = this.clientWidth;
-        h = this.clientHeight;
-      });
-
-  fo
-    .attr('width', w)
-    .attr('height', h);
-}
-
-function addTextLabel(label, root, labelCols, labelCut) {
-  if (labelCut === undefined) labelCut = 'false';
-  labelCut = (labelCut.toString().toLowerCase() === 'true');
-
-  var node = root
-    .append('text')
-    .attr('text-anchor', 'left');
-
-  label = label.replace(/\\n/g, '\n');
-
-  var arr = labelCols ? wordwrap(label, labelCols, labelCut) : label;
-  arr = arr.split('\n');
-  for (var i = 0; i < arr.length; i++) {
-    node
-      .append('tspan')
-        .attr('dy', '1em')
-        .attr('x', '1')
-        .text(arr[i]);
-  }
-}
-
-// Thanks to
-// http://james.padolsey.com/javascript/wordwrap-for-javascript/
-function wordwrap (str, width, cut, brk) {
-     brk = brk || '\n';
-     width = width || 75;
-     cut = cut || false;
-
-     if (!str) { return str; }
-
-     var regex = '.{1,' +width+ '}(\\s|$)' + (cut ? '|.{' +width+ '}|.+$' : '|\\S+?(\\s|$)');
-
-     return str.match( new RegExp(regex, 'g') ).join( brk );
-}
-
-function findMidPoint(points) {
-  var midIdx = points.length / 2;
-  if (points.length % 2) {
-    return points[Math.floor(midIdx)];
-  } else {
-    var p0 = points[midIdx - 1];
-    var p1 = points[midIdx];
-    return {x: (p0.x + p1.x) / 2, y: (p0.y + p1.y) / 2};
-  }
-}
-
-function intersectRect(rect, point) {
-  var x = rect.x;
-  var y = rect.y;
-
-  // For now we only support rectangles
-
-  // Rectangle intersection algorithm from:
-  // http://math.stackexchange.com/questions/108113/find-edge-between-two-boxes
-  var dx = point.x - x;
-  var dy = point.y - y;
-  var w = rect.width / 2;
-  var h = rect.height / 2;
-
-  var sx, sy;
-  if (Math.abs(dy) * w > Math.abs(dx) * h) {
-    // Intersection is top or bottom of rect.
-    if (dy < 0) {
-      h = -h;
-    }
-    sx = dy === 0 ? 0 : h * dx / dy;
-    sy = h;
-  } else {
-    // Intersection is left or right of rect.
-    if (dx < 0) {
-      w = -w;
-    }
-    sx = w;
-    sy = dx === 0 ? 0 : w * dy / dx;
-  }
-
-  return {x: x + sx, y: y + sy};
-}
-
-function isComposite(g, u) {
-  return 'children' in g && g.children(u).length;
-}
-
-function bind(func, thisArg) {
-  // For some reason PhantomJS occassionally fails when using the builtin bind,
-  // so we check if it is available and if not, use a degenerate polyfill.
-  if (func.bind) {
-    return func.bind(thisArg);
-  }
-
-  return function() {
-    return func.apply(thisArg, arguments);
-  };
-}
-
-},{"d3":10,"dagre":11}],4:[function(require,module,exports){
-module.exports = '0.2.0';
-
-},{}],5:[function(require,module,exports){
-exports.Set = require('./lib/Set');
-exports.PriorityQueue = require('./lib/PriorityQueue');
-exports.version = require('./lib/version');
-
-},{"./lib/PriorityQueue":6,"./lib/Set":7,"./lib/version":9}],6:[function(require,module,exports){
-module.exports = PriorityQueue;
-
-/**
- * A min-priority queue data structure. This algorithm is derived from Cormen,
- * et al., "Introduction to Algorithms". The basic idea of a min-priority
- * queue is that you can efficiently (in O(1) time) get the smallest key in
- * the queue. Adding and removing elements takes O(log n) time. A key can
- * have its priority decreased in O(log n) time.
- */
-function PriorityQueue() {
-  this._arr = [];
-  this._keyIndices = {};
-}
-
-/**
- * Returns the number of elements in the queue. Takes `O(1)` time.
- */
-PriorityQueue.prototype.size = function() {
-  return this._arr.length;
-};
-
-/**
- * Returns the keys that are in the queue. Takes `O(n)` time.
- */
-PriorityQueue.prototype.keys = function() {
-  return this._arr.map(function(x) { return x.key; });
-};
-
-/**
- * Returns `true` if **key** is in the queue and `false` if not.
- */
-PriorityQueue.prototype.has = function(key) {
-  return key in this._keyIndices;
-};
-
-/**
- * Returns the priority for **key**. If **key** is not present in the queue
- * then this function returns `undefined`. Takes `O(1)` time.
- *
- * @param {Object} key
- */
-PriorityQueue.prototype.priority = function(key) {
-  var index = this._keyIndices[key];
-  if (index !== undefined) {
-    return this._arr[index].priority;
-  }
-};
-
-/**
- * Returns the key for the minimum element in this queue. If the queue is
- * empty this function throws an Error. Takes `O(1)` time.
- */
-PriorityQueue.prototype.min = function() {
-  if (this.size() === 0) {
-    throw new Error("Queue underflow");
-  }
-  return this._arr[0].key;
-};
-
-/**
- * Inserts a new key into the priority queue. If the key already exists in
- * the queue this function returns `false`; otherwise it will return `true`.
- * Takes `O(n)` time.
- *
- * @param {Object} key the key to add
- * @param {Number} priority the initial priority for the key
- */
-PriorityQueue.prototype.add = function(key, priority) {
-  var keyIndices = this._keyIndices;
-  if (!(key in keyIndices)) {
-    var arr = this._arr;
-    var index = arr.length;
-    keyIndices[key] = index;
-    arr.push({key: key, priority: priority});
-    this._decrease(index);
-    return true;
-  }
-  return false;
-};
-
-/**
- * Removes and returns the smallest key in the queue. Takes `O(log n)` time.
- */
-PriorityQueue.prototype.removeMin = function() {
-  this._swap(0, this._arr.length - 1);
-  var min = this._arr.pop();
-  delete this._keyIndices[min.key];
-  this._heapify(0);
-  return min.key;
-};
-
-/**
- * Decreases the priority for **key** to **priority**. If the new priority is
- * greater than the previous priority, this function will throw an Error.
- *
- * @param {Object} key the key for which to raise priority
- * @param {Number} priority the new priority for the key
- */
-PriorityQueue.prototype.decrease = function(key, priority) {
-  var index = this._keyIndices[key];
-  if (priority > this._arr[index].priority) {
-    throw new Error("New priority is greater than current priority. " +
-        "Key: " + key + " Old: " + this._arr[index].priority + " New: " + priority);
-  }
-  this._arr[index].priority = priority;
-  this._decrease(index);
-};
-
-PriorityQueue.prototype._heapify = function(i) {
-  var arr = this._arr;
-  var l = 2 * i,
-      r = l + 1,
-      largest = i;
-  if (l < arr.length) {
-    largest = arr[l].priority < arr[largest].priority ? l : largest;
-    if (r < arr.length) {
-      largest = arr[r].priority < arr[largest].priority ? r : largest;
-    }
-    if (largest !== i) {
-      this._swap(i, largest);
-      this._heapify(largest);
-    }
-  }
-};
-
-PriorityQueue.prototype._decrease = function(index) {
-  var arr = this._arr;
-  var priority = arr[index].priority;
-  var parent;
-  while (index !== 0) {
-    parent = index >> 1;
-    if (arr[parent].priority < priority) {
-      break;
-    }
-    this._swap(index, parent);
-    index = parent;
-  }
-};
-
-PriorityQueue.prototype._swap = function(i, j) {
-  var arr = this._arr;
-  var keyIndices = this._keyIndices;
-  var origArrI = arr[i];
-  var origArrJ = arr[j];
-  arr[i] = origArrJ;
-  arr[j] = origArrI;
-  keyIndices[origArrJ.key] = i;
-  keyIndices[origArrI.key] = j;
-};
-
-},{}],7:[function(require,module,exports){
-var util = require('./util');
-
-module.exports = Set;
-
-/**
- * Constructs a new Set with an optional set of `initialKeys`.
- *
- * It is important to note that keys are coerced to String for most purposes
- * with this object, similar to the behavior of JavaScript's Object. For
- * example, the following will add only one key:
- *
- *     var s = new Set();
- *     s.add(1);
- *     s.add("1");
- *
- * However, the type of the key is preserved internally so that `keys` returns
- * the original key set uncoerced. For the above example, `keys` would return
- * `[1]`.
- */
-function Set(initialKeys) {
-  this._size = 0;
-  this._keys = {};
-
-  if (initialKeys) {
-    for (var i = 0, il = initialKeys.length; i < il; ++i) {
-      this.add(initialKeys[i]);
-    }
-  }
-}
-
-/**
- * Returns a new Set that represents the set intersection of the array of given
- * sets.
- */
-Set.intersect = function(sets) {
-  if (sets.length === 0) {
-    return new Set();
-  }
-
-  var result = new Set(!util.isArray(sets[0]) ? sets[0].keys() : sets[0]);
-  for (var i = 1, il = sets.length; i < il; ++i) {
-    var resultKeys = result.keys(),
-        other = !util.isArray(sets[i]) ? sets[i] : new Set(sets[i]);
-    for (var j = 0, jl = resultKeys.length; j < jl; ++j) {
-      var key = resultKeys[j];
-      if (!other.has(key)) {
-        result.remove(key);
-      }
-    }
-  }
-
-  return result;
-};
-
-/**
- * Returns a new Set that represents the set union of the array of given sets.
- */
-Set.union = function(sets) {
-  var totalElems = util.reduce(sets, function(lhs, rhs) {
-    return lhs + (rhs.size ? rhs.size() : rhs.length);
-  }, 0);
-  var arr = new Array(totalElems);
-
-  var k = 0;
-  for (var i = 0, il = sets.length; i < il; ++i) {
-    var cur = sets[i],
-        keys = !util.isArray(cur) ? cur.keys() : cur;
-    for (var j = 0, jl = keys.length; j < jl; ++j) {
-      arr[k++] = keys[j];
-    }
-  }
-
-  return new Set(arr);
-};
-
-/**
- * Returns the size of this set in `O(1)` time.
- */
-Set.prototype.size = function() {
-  return this._size;
-};
-
-/**
- * Returns the keys in this set. Takes `O(n)` time.
- */
-Set.prototype.keys = function() {
-  return values(this._keys);
-};
-
-/**
- * Tests if a key is present in this Set. Returns `true` if it is and `false`
- * if not. Takes `O(1)` time.
- */
-Set.prototype.has = function(key) {
-  return key in this._keys;
-};
-
-/**
- * Adds a new key to this Set if it is not already present. Returns `true` if
- * the key was added and `false` if it was already present. Takes `O(1)` time.
- */
-Set.prototype.add = function(key) {
-  if (!(key in this._keys)) {
-    this._keys[key] = key;
-    ++this._size;
-    return true;
-  }
-  return false;
-};
-
-/**
- * Removes a key from this Set. If the key was removed this function returns
- * `true`. If not, it returns `false`. Takes `O(1)` time.
- */
-Set.prototype.remove = function(key) {
-  if (key in this._keys) {
-    delete this._keys[key];
-    --this._size;
-    return true;
-  }
-  return false;
-};
-
-/*
- * Returns an array of all values for properties of **o**.
- */
-function values(o) {
-  var ks = Object.keys(o),
-      len = ks.length,
-      result = new Array(len),
-      i;
-  for (i = 0; i < len; ++i) {
-    result[i] = o[ks[i]];
-  }
-  return result;
-}
-
-},{"./util":8}],8:[function(require,module,exports){
-/*
- * This polyfill comes from
- * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray
- */
-if(!Array.isArray) {
-  exports.isArray = function (vArg) {
-    return Object.prototype.toString.call(vArg) === '[object Array]';
-  };
-} else {
-  exports.isArray = Array.isArray;
-}
-
-/*
- * Slightly adapted polyfill from
- * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/Reduce
- */
-if ('function' !== typeof Array.prototype.reduce) {
-  exports.reduce = function(array, callback, opt_initialValue) {
-    'use strict';
-    if (null === array || 'undefined' === typeof array) {
-      // At the moment all modern browsers, that support strict mode, have
-      // native implementation of Array.prototype.reduce. For instance, IE8
-      // does not support strict mode, so this check is actually useless.
-      throw new TypeError(
-          'Array.prototype.reduce called on null or undefined');
-    }
-    if ('function' !== typeof callback) {
-      throw new TypeError(callback + ' is not a function');
-    }
-    var index, value,
-        length = array.length >>> 0,
-        isValueSet = false;
-    if (1 < arguments.length) {
-      value = opt_initialValue;
-      isValueSet = true;
-    }
-    for (index = 0; length > index; ++index) {
-      if (array.hasOwnProperty(index)) {
-        if (isValueSet) {
-          value = callback(value, array[index], index, array);
-        }
-        else {
-          value = array[index];
-          isValueSet = true;
-        }
-      }
-    }
-    if (!isValueSet) {
-      throw new TypeError('Reduce of empty array with no initial value');
-    }
-    return value;
-  };
-} else {
-  exports.reduce = function(array, callback, opt_initialValue) {
-    return array.reduce(callback, opt_initialValue);
-  };
-}
-
-},{}],9:[function(require,module,exports){
-module.exports = '1.1.3';
-
-},{}],10:[function(require,module,exports){
-require("./d3");
-module.exports = d3;
-(function () { delete this.d3; })(); // unset global
-
-},{}],11:[function(require,module,exports){
-/*
-Copyright (c) 2012-2013 Chris Pettitt
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
-*/
-exports.Digraph = require("graphlib").Digraph;
-exports.Graph = require("graphlib").Graph;
-exports.layout = require("./lib/layout");
-exports.version = require("./lib/version");
-
-},{"./lib/layout":12,"./lib/version":27,"graphlib":28}],12:[function(require,module,exports){
-var util = require('./util'),
-    rank = require('./rank'),
-    order = require('./order'),
-    CGraph = require('graphlib').CGraph,
-    CDigraph = require('graphlib').CDigraph;
-
-module.exports = function() {
-  // External configuration
-  var config = {
-    // How much debug information to include?
-    debugLevel: 0,
-    // Max number of sweeps to perform in order phase
-    orderMaxSweeps: order.DEFAULT_MAX_SWEEPS,
-    // Use network simplex algorithm in ranking
-    rankSimplex: false,
-    // Rank direction. Valid values are (TB, LR)
-    rankDir: 'TB'
-  };
-
-  // Phase functions
-  var position = require('./position')();
-
-  // This layout object
-  var self = {};
-
-  self.orderIters = util.propertyAccessor(self, config, 'orderMaxSweeps');
-
-  self.rankSimplex = util.propertyAccessor(self, config, 'rankSimplex');
-
-  self.nodeSep = delegateProperty(position.nodeSep);
-  self.edgeSep = delegateProperty(position.edgeSep);
-  self.universalSep = delegateProperty(position.universalSep);
-  self.rankSep = delegateProperty(position.rankSep);
-  self.rankDir = util.propertyAccessor(self, config, 'rankDir');
-  self.debugAlignment = delegateProperty(position.debugAlignment);
-
-  self.debugLevel = util.propertyAccessor(self, config, 'debugLevel', function(x) {
-    util.log.level = x;
-    position.debugLevel(x);
-  });
-
-  self.run = util.time('Total layout', run);
-
-  self._normalize = normalize;
-
-  return self;
-
-  /*
-   * Constructs an adjacency graph using the nodes and edges specified through
-   * config. For each node and edge we add a property `dagre` that contains an
-   * object that will hold intermediate and final layout information. Some of
-   * the contents include:
-   *
-   *  1) A generated ID that uniquely identifies the object.
-   *  2) Dimension information for nodes (copied from the source node).
-   *  3) Optional dimension information for edges.
-   *
-   * After the adjacency graph is constructed the code no longer needs to use
-   * the original nodes and edges passed in via config.
-   */
-  function initLayoutGraph(inputGraph) {
-    var g = new CDigraph();
-
-    inputGraph.eachNode(function(u, value) {
-      if (value === undefined) value = {};
-      g.addNode(u, {
-        width: value.width,
-        height: value.height
-      });
-      if (value.hasOwnProperty('rank')) {
-        g.node(u).prefRank = value.rank;
-      }
-    });
-
-    // Set up subgraphs
-    if (inputGraph.parent) {
-      inputGraph.nodes().forEach(function(u) {
-        g.parent(u, inputGraph.parent(u));
-      });
-    }
-
-    inputGraph.eachEdge(function(e, u, v, value) {
-      if (value === undefined) value = {};
-      var newValue = {
-        e: e,
-        minLen: value.minLen || 1,
-        width: value.width || 0,
-        height: value.height || 0,
-        points: []
-      };
-
-      g.addEdge(null, u, v, newValue);
-    });
-
-    // Initial graph attributes
-    var graphValue = inputGraph.graph() || {};
-    g.graph({
-      rankDir: graphValue.rankDir || config.rankDir,
-      orderRestarts: graphValue.orderRestarts
-    });
-
-    return g;
-  }
-
-  function run(inputGraph) {
-    var rankSep = self.rankSep();
-    var g;
-    try {
-      // Build internal graph
-      g = util.time('initLayoutGraph', initLayoutGraph)(inputGraph);
-
-      if (g.order() === 0) {
-        return g;
-      }
-
-      // Make space for edge labels
-      g.eachEdge(function(e, s, t, a) {
-        a.minLen *= 2;
-      });
-      self.rankSep(rankSep / 2);
-
-      // Determine the rank for each node. Nodes with a lower rank will appear
-      // above nodes of higher rank.
-      util.time('rank.run', rank.run)(g, config.rankSimplex);
-
-      // Normalize the graph by ensuring that every edge is proper (each edge has
-      // a length of 1). We achieve this by adding dummy nodes to long edges,
-      // thus shortening them.
-      util.time('normalize', normalize)(g);
-
-      // Order the nodes so that edge crossings are minimized.
-      util.time('order', order)(g, config.orderMaxSweeps);
-
-      // Find the x and y coordinates for every node in the graph.
-      util.time('position', position.run)(g);
-
-      // De-normalize the graph by removing dummy nodes and augmenting the
-      // original long edges with coordinate information.
-      util.time('undoNormalize', undoNormalize)(g);
-
-      // Reverses points for edges that are in a reversed state.
-      util.time('fixupEdgePoints', fixupEdgePoints)(g);
-
-      // Restore delete edges and reverse edges that were reversed in the rank
-      // phase.
-      util.time('rank.restoreEdges', rank.restoreEdges)(g);
-
-      // Construct final result graph and return it
-      return util.time('createFinalGraph', createFinalGraph)(g, inputGraph.isDirected());
-    } finally {
-      self.rankSep(rankSep);
-    }
-  }
-
-  /*
-   * This function is responsible for 'normalizing' the graph. The process of
-   * normalization ensures that no edge in the graph has spans more than one
-   * rank. To do this it inserts dummy nodes as needed and links them by adding
-   * dummy edges. This function keeps enough information in the dummy nodes and
-   * edges to ensure that the original graph can be reconstructed later.
-   *
-   * This method assumes that the input graph is cycle free.
-   */
-  function normalize(g) {
-    var dummyCount = 0;
-    g.eachEdge(function(e, s, t, a) {
-      var sourceRank = g.node(s).rank;
-      var targetRank = g.node(t).rank;
-      if (sourceRank + 1 < targetRank) {
-        for (var u = s, rank = sourceRank + 1, i = 0; rank < targetRank; ++rank, ++i) {
-          var v = '_D' + (++dummyCount);
-          var node = {
-            width: a.width,
-            height: a.height,
-            edge: { id: e, source: s, target: t, attrs: a },
-            rank: rank,
-            dummy: true
-          };
-
-          // If this node represents a bend then we will use it as a control
-          // point. For edges with 2 segments this will be the center dummy
-          // node. For edges with more than two segments, this will be the
-          // first and last dummy node.
-          if (i === 0) node.index = 0;
-          else if (rank + 1 === targetRank) node.index = 1;
-
-          g.addNode(v, node);
-          g.addEdge(null, u, v, {});
-          u = v;
-        }
-        g.addEdge(null, u, t, {});
-        g.delEdge(e);
-      }
-    });
-  }
-
-  /*
-   * Reconstructs the graph as it was before normalization. The positions of
-   * dummy nodes are used to build an array of points for the original 'long'
-   * edge. Dummy nodes and edges are removed.
-   */
-  function undoNormalize(g) {
-    g.eachNode(function(u, a) {
-      if (a.dummy) {
-        if ('index' in a) {
-          var edge = a.edge;
-          if (!g.hasEdge(edge.id)) {
-            g.addEdge(edge.id, edge.source, edge.target, edge.attrs);
-          }
-          var points = g.edge(edge.id).points;
-          points[a.index] = { x: a.x, y: a.y, ul: a.ul, ur: a.ur, dl: a.dl, dr: a.dr };
-        }
-        g.delNode(u);
-      }
-    });
-  }
-
-  /*
-   * For each edge that was reversed during the `acyclic` step, reverse its
-   * array of points.
-   */
-  function fixupEdgePoints(g) {
-    g.eachEdge(function(e, s, t, a) { if (a.reversed) a.points.reverse(); });
-  }
-
-  function createFinalGraph(g, isDirected) {
-    var out = isDirected ? new CDigraph() : new CGraph();
-    out.graph(g.graph());
-    g.eachNode(function(u, value) { out.addNode(u, value); });
-    g.eachNode(function(u) { out.parent(u, g.parent(u)); });
-    g.eachEdge(function(e, u, v, value) {
-      out.addEdge(value.e, u, v, value);
-    });
-
-    // Attach bounding box information
-    var maxX = 0, maxY = 0;
-    g.eachNode(function(u, value) {
-      if (!g.children(u).length) {
-        maxX = Math.max(maxX, value.x + value.width / 2);
-        maxY = Math.max(maxY, value.y + value.height / 2);
-      }
-    });
-    g.eachEdge(function(e, u, v, value) {
-      var maxXPoints = Math.max.apply(Math, value.points.map(function(p) { return p.x; }));
-      var maxYPoints = Math.max.apply(Math, value.points.map(function(p) { return p.y; }));
-      maxX = Math.max(maxX, maxXPoints + value.width / 2);
-      maxY = Math.max(maxY, maxYPoints + value.height / 2);
-    });
-    out.graph().width = maxX;
-    out.graph().height = maxY;
-
-    return out;
-  }
-
-  /*
-   * Given a function, a new function is returned that invokes the given
-   * function. The return value from the function is always the `self` object.
-   */
-  function delegateProperty(f) {
-    return function() {
-      if (!arguments.length) return f();
-      f.apply(null, arguments);
-      return self;
-    };
-  }
-};
-
-
-},{"./order":13,"./position":18,"./rank":19,"./util":26,"graphlib":28}],13:[function(require,module,exports){
-var util = require('./util'),
-    crossCount = require('./order/crossCount'),
-    initLayerGraphs = require('./order/initLayerGraphs'),
-    initOrder = require('./order/initOrder'),
-    sortLayer = require('./order/sortLayer');
-
-module.exports = order;
-
-// The maximum number of sweeps to perform before finishing the order phase.
-var DEFAULT_MAX_SWEEPS = 24;
-order.DEFAULT_MAX_SWEEPS = DEFAULT_MAX_SWEEPS;
-
-/*
- * Runs the order phase with the specified `graph, `maxSweeps`, and
- * `debugLevel`. If `maxSweeps` is not specified we use `DEFAULT_MAX_SWEEPS`.
- * If `debugLevel` is not set we assume 0.
- */
-function order(g, maxSweeps) {
-  if (arguments.length < 2) {
-    maxSweeps = DEFAULT_MAX_SWEEPS;
-  }
-
-  var restarts = g.graph().orderRestarts || 0;
-
-  var layerGraphs = initLayerGraphs(g);
-  // TODO: remove this when we add back support for ordering clusters
-  layerGraphs.forEach(function(lg) {
-    lg = lg.filterNodes(function(u) { return !g.children(u).length; });
-  });
-
-  var iters = 0,
-      currentBestCC,
-      allTimeBestCC = Number.MAX_VALUE,
-      allTimeBest = {};
-
-  function saveAllTimeBest() {
-    g.eachNode(function(u, value) { allTimeBest[u] = value.order; });
-  }
-
-  for (var j = 0; j < Number(restarts) + 1 && allTimeBestCC !== 0; ++j) {
-    currentBestCC = Number.MAX_VALUE;
-    initOrder(g, restarts > 0);
-
-    util.log(2, 'Order phase start cross count: ' + g.graph().orderInitCC);
-
-    var i, lastBest, cc;
-    for (i = 0, lastBest = 0; lastBest < 4 && i < maxSweeps && currentBestCC > 0; ++i, ++lastBest, ++iters) {
-      sweep(g, layerGraphs, i);
-      cc = crossCount(g);
-      if (cc < currentBestCC) {
-        lastBest = 0;
-        currentBestCC = cc;
-        if (cc < allTimeBestCC) {
-          saveAllTimeBest();
-          allTimeBestCC = cc;
-        }
-      }
-      util.log(3, 'Order phase start ' + j + ' iter ' + i + ' cross count: ' + cc);
-    }
-  }
-
-  Object.keys(allTimeBest).forEach(function(u) {
-    if (!g.children || !g.children(u).length) {
-      g.node(u).order = allTimeBest[u];
-    }
-  });
-  g.graph().orderCC = allTimeBestCC;
-
-  util.log(2, 'Order iterations: ' + iters);
-  util.log(2, 'Order phase best cross count: ' + g.graph().orderCC);
-}
-
-function predecessorWeights(g, nodes) {
-  var weights = {};
-  nodes.forEach(function(u) {
-    weights[u] = g.inEdges(u).map(function(e) {
-      return g.node(g.source(e)).order;
-    });
-  });
-  return weights;
-}
-
-function successorWeights(g, nodes) {
-  var weights = {};
-  nodes.forEach(function(u) {
-    weights[u] = g.outEdges(u).map(function(e) {
-      return g.node(g.target(e)).order;
-    });
-  });
-  return weights;
-}
-
-function sweep(g, layerGraphs, iter) {
-  if (iter % 2 === 0) {
-    sweepDown(g, layerGraphs, iter);
-  } else {
-    sweepUp(g, layerGraphs, iter);
-  }
-}
-
-function sweepDown(g, layerGraphs) {
-  var cg;
-  for (i = 1; i < layerGraphs.length; ++i) {
-    cg = sortLayer(layerGraphs[i], cg, predecessorWeights(g, layerGraphs[i].nodes()));
-  }
-}
-
-function sweepUp(g, layerGraphs) {
-  var cg;
-  for (i = layerGraphs.length - 2; i >= 0; --i) {
-    sortLayer(layerGraphs[i], cg, successorWeights(g, layerGraphs[i].nodes()));
-  }
-}
-
-},{"./order/crossCount":14,"./order/initLayerGraphs":15,"./order/initOrder":16,"./order/sortLayer":17,"./util":26}],14:[function(require,module,exports){
-var util = require('../util');
-
-module.exports = crossCount;
-
-/*
- * Returns the cross count for the given graph.
- */
-function crossCount(g) {
-  var cc = 0;
-  var ordering = util.ordering(g);
-  for (var i = 1; i < ordering.length; ++i) {
-    cc += twoLayerCrossCount(g, ordering[i-1], ordering[i]);
-  }
-  return cc;
-}
-
-/*
- * This function searches through a ranked and ordered graph and counts the
- * number of edges that cross. This algorithm is derived from:
- *
- *    W. Barth et al., Bilayer Cross Counting, JGAA, 8(2) 179–194 (2004)
- */
-function twoLayerCrossCount(g, layer1, layer2) {
-  var indices = [];
-  layer1.forEach(function(u) {
-    var nodeIndices = [];
-    g.outEdges(u).forEach(function(e) { nodeIndices.push(g.node(g.target(e)).order); });
-    nodeIndices.sort(function(x, y) { return x - y; });
-    indices = indices.concat(nodeIndices);
-  });
-
-  var firstIndex = 1;
-  while (firstIndex < layer2.length) firstIndex <<= 1;
-
-  var treeSize = 2 * firstIndex - 1;
-  firstIndex -= 1;
-
-  var tree = [];
-  for (var i = 0; i < treeSize; ++i) { tree[i] = 0; }
-
-  var cc = 0;
-  indices.forEach(function(i) {
-    var treeIndex = i + firstIndex;
-    ++tree[treeIndex];
-    while (treeIndex > 0) {
-      if (treeIndex % 2) {
-        cc += tree[treeIndex + 1];
-      }
-      treeIndex = (treeIndex - 1) >> 1;
-      ++tree[treeIndex];
-    }
-  });
-
-  return cc;
-}
-
-},{"../util":26}],15:[function(require,module,exports){
-var nodesFromList = require('graphlib').filter.nodesFromList,
-    /* jshint -W079 */
-    Set = require('cp-data').Set;
-
-module.exports = initLayerGraphs;
-
-/*
- * This function takes a compound layered graph, g, and produces an array of
- * layer graphs. Each entry in the array represents a subgraph of nodes
- * relevant for performing crossing reduction on that layer.
- */
-function initLayerGraphs(g) {
-  var ranks = [];
-
-  function dfs(u) {
-    if (u === null) {
-      g.children(u).forEach(function(v) { dfs(v); });
-      return;
-    }
-
-    var value = g.node(u);
-    value.minRank = ('rank' in value) ? value.rank : Number.MAX_VALUE;
-    value.maxRank = ('rank' in value) ? value.rank : Number.MIN_VALUE;
-    var uRanks = new Set();
-    g.children(u).forEach(function(v) {
-      var rs = dfs(v);
-      uRanks = Set.union([uRanks, rs]);
-      value.minRank = Math.min(value.minRank, g.node(v).minRank);
-      value.maxRank = Math.max(value.maxRank, g.node(v).maxRank);
-    });
-
-    if ('rank' in value) uRanks.add(value.rank);
-
-    uRanks.keys().forEach(function(r) {
-      if (!(r in ranks)) ranks[r] = [];
-      ranks[r].push(u);
-    });
-
-    return uRanks;
-  }
-  dfs(null);
-
-  var layerGraphs = [];
-  ranks.forEach(function(us, rank) {
-    layerGraphs[rank] = g.filterNodes(nodesFromList(us));
-  });
-
-  return layerGraphs;
-}
-
-},{"cp-data":5,"graphlib":28}],16:[function(require,module,exports){
-var crossCount = require('./crossCount'),
-    util = require('../util');
-
-module.exports = initOrder;
-
-/*
- * Given a graph with a set of layered nodes (i.e. nodes that have a `rank`
- * attribute) this function attaches an `order` attribute that uniquely
- * arranges each node of each rank. If no constraint graph is provided the
- * order of the nodes in each rank is entirely arbitrary.
- */
-function initOrder(g, random) {
-  var layers = [];
-
-  g.eachNode(function(u, value) {
-    var layer = layers[value.rank];
-    if (g.children && g.children(u).length > 0) return;
-    if (!layer) {
-      layer = layers[value.rank] = [];
-    }
-    layer.push(u);
-  });
-
-  layers.forEach(function(layer) {
-    if (random) {
-      util.shuffle(layer);
-    }
-    layer.forEach(function(u, i) {
-      g.node(u).order = i;
-    });
-  });
-
-  var cc = crossCount(g);
-  g.graph().orderInitCC = cc;
-  g.graph().orderCC = Number.MAX_VALUE;
-}
-
-},{"../util":26,"./crossCount":14}],17:[function(require,module,exports){
-var util = require('../util');
-/*
-    Digraph = require('graphlib').Digraph,
-    topsort = require('graphlib').alg.topsort,
-    nodesFromList = require('graphlib').filter.nodesFromList;
-*/
-
-module.exports = sortLayer;
-
-/*
-function sortLayer(g, cg, weights) {
-  var result = sortLayerSubgraph(g, null, cg, weights);
-  result.list.forEach(function(u, i) {
-    g.node(u).order = i;
-  });
-  return result.constraintGraph;
-}
-*/
-
-function sortLayer(g, cg, weights) {
-  var ordering = [];
-  var bs = {};
-  g.eachNode(function(u, value) {
-    ordering[value.order] = u;
-    var ws = weights[u];
-    if (ws.length) {
-      bs[u] = util.sum(ws) / ws.length;
-    }
-  });
-
-  var toSort = g.nodes().filter(function(u) { return bs[u] !== undefined; });
-  toSort.sort(function(x, y) {
-    return bs[x] - bs[y] || g.node(x).order - g.node(y).order;
-  });
-
-  for (var i = 0, j = 0, jl = toSort.length; j < jl; ++i) {
-    if (bs[ordering[i]] !== undefined) {
-      g.node(toSort[j++]).order = i;
-    }
-  }
-}
-
-// TOOD: re-enable constrained sorting once we have a strategy for handling
-// undefined barycenters.
-/*
-function sortLayerSubgraph(g, sg, cg, weights) {
-  cg = cg ? cg.filterNodes(nodesFromList(g.children(sg))) : new Digraph();
-
-  var nodeData = {};
-  g.children(sg).forEach(function(u) {
-    if (g.children(u).length) {
-      nodeData[u] = sortLayerSubgraph(g, u, cg, weights);
-      nodeData[u].firstSG = u;
-      nodeData[u].lastSG = u;
-    } else {
-      var ws = weights[u];
-      nodeData[u] = {
-        degree: ws.length,
-        barycenter: ws.length > 0 ? util.sum(ws) / ws.length : 0,
-        list: [u]
-      };
-    }
-  });
-
-  resolveViolatedConstraints(g, cg, nodeData);
-
-  var keys = Object.keys(nodeData);
-  keys.sort(function(x, y) {
-    return nodeData[x].barycenter - nodeData[y].barycenter;
-  });
-
-  var result =  keys.map(function(u) { return nodeData[u]; })
-                    .reduce(function(lhs, rhs) { return mergeNodeData(g, lhs, rhs); });
-  return result;
-}
-
-/*
-function mergeNodeData(g, lhs, rhs) {
-  var cg = mergeDigraphs(lhs.constraintGraph, rhs.constraintGraph);
-
-  if (lhs.lastSG !== undefined && rhs.firstSG !== undefined) {
-    if (cg === undefined) {
-      cg = new Digraph();
-    }
-    if (!cg.hasNode(lhs.lastSG)) { cg.addNode(lhs.lastSG); }
-    cg.addNode(rhs.firstSG);
-    cg.addEdge(null, lhs.lastSG, rhs.firstSG);
-  }
-
-  return {
-    degree: lhs.degree + rhs.degree,
-    barycenter: (lhs.barycenter * lhs.degree + rhs.barycenter * rhs.degree) /
-                (lhs.degree + rhs.degree),
-    list: lhs.list.concat(rhs.list),
-    firstSG: lhs.firstSG !== undefined ? lhs.firstSG : rhs.firstSG,
-    lastSG: rhs.lastSG !== undefined ? rhs.lastSG : lhs.lastSG,
-    constraintGraph: cg
-  };
-}
-
-function mergeDigraphs(lhs, rhs) {
-  if (lhs === undefined) return rhs;
-  if (rhs === undefined) return lhs;
-
-  lhs = lhs.copy();
-  rhs.nodes().forEach(function(u) { lhs.addNode(u); });
-  rhs.edges().forEach(function(e, u, v) { lhs.addEdge(null, u, v); });
-  return lhs;
-}
-
-function resolveViolatedConstraints(g, cg, nodeData) {
-  // Removes nodes `u` and `v` from `cg` and makes any edges incident on them
-  // incident on `w` instead.
-  function collapseNodes(u, v, w) {
-    // TODO original paper removes self loops, but it is not obvious when this would happen
-    cg.inEdges(u).forEach(function(e) {
-      cg.delEdge(e);
-      cg.addEdge(null, cg.source(e), w);
-    });
-
-    cg.outEdges(v).forEach(function(e) {
-      cg.delEdge(e);
-      cg.addEdge(null, w, cg.target(e));
-    });
-
-    cg.delNode(u);
-    cg.delNode(v);
-  }
-
-  var violated;
-  while ((violated = findViolatedConstraint(cg, nodeData)) !== undefined) {
-    var source = cg.source(violated),
-        target = cg.target(violated);
-
-    var v;
-    while ((v = cg.addNode(null)) && g.hasNode(v)) {
-      cg.delNode(v);
-    }
-
-    // Collapse barycenter and list
-    nodeData[v] = mergeNodeData(g, nodeData[source], nodeData[target]);
-    delete nodeData[source];
-    delete nodeData[target];
-
-    collapseNodes(source, target, v);
-    if (cg.incidentEdges(v).length === 0) { cg.delNode(v); }
-  }
-}
-
-function findViolatedConstraint(cg, nodeData) {
-  var us = topsort(cg);
-  for (var i = 0; i < us.length; ++i) {
-    var u = us[i];
-    var inEdges = cg.inEdges(u);
-    for (var j = 0; j < inEdges.length; ++j) {
-      var e = inEdges[j];
-      if (nodeData[cg.source(e)].barycenter >= nodeData[u].barycenter) {
-        return e;
-      }
-    }
-  }
-}
-*/
-
-},{"../util":26}],18:[function(require,module,exports){
-var util = require('./util');
-
-/*
- * The algorithms here are based on Brandes and Köpf, "Fast and Simple
- * Horizontal Coordinate Assignment".
- */
-module.exports = function() {
-  // External configuration
-  var config = {
-    nodeSep: 50,
-    edgeSep: 10,
-    universalSep: null,
-    rankSep: 30
-  };
-
-  var self = {};
-
-  self.nodeSep = util.propertyAccessor(self, config, 'nodeSep');
-  self.edgeSep = util.propertyAccessor(self, config, 'edgeSep');
-  // If not null this separation value is used for all nodes and edges
-  // regardless of their widths. `nodeSep` and `edgeSep` are ignored with this
-  // option.
-  self.universalSep = util.propertyAccessor(self, config, 'universalSep');
-  self.rankSep = util.propertyAccessor(self, config, 'rankSep');
-  self.debugLevel = util.propertyAccessor(self, config, 'debugLevel');
-
-  self.run = run;
-
-  return self;
-
-  function run(g) {
-    g = g.filterNodes(util.filterNonSubgraphs(g));
-
-    var layering = util.ordering(g);
-
-    var conflicts = findConflicts(g, layering);
-
-    var xss = {};
-    ['u', 'd'].forEach(function(vertDir) {
-      if (vertDir === 'd') layering.reverse();
-
-      ['l', 'r'].forEach(function(horizDir) {
-        if (horizDir === 'r') reverseInnerOrder(layering);
-
-        var dir = vertDir + horizDir;
-        var align = verticalAlignment(g, layering, conflicts, vertDir === 'u' ? 'predecessors' : 'successors');
-        xss[dir]= horizontalCompaction(g, layering, align.pos, align.root, align.align);
-
-        if (config.debugLevel >= 3)
-          debugPositioning(vertDir + horizDir, g, layering, xss[dir]);
-
-        if (horizDir === 'r') flipHorizontally(xss[dir]);
-
-        if (horizDir === 'r') reverseInnerOrder(layering);
-      });
-
-      if (vertDir === 'd') layering.reverse();
-    });
-
-    balance(g, layering, xss);
-
-    g.eachNode(function(v) {
-      var xs = [];
-      for (var alignment in xss) {
-        var alignmentX = xss[alignment][v];
-        posXDebug(alignment, g, v, alignmentX);
-        xs.push(alignmentX);
-      }
-      xs.sort(function(x, y) { return x - y; });
-      posX(g, v, (xs[1] + xs[2]) / 2);
-    });
-
-    // Align y coordinates with ranks
-    var y = 0, reverseY = g.graph().rankDir === 'BT' || g.graph().rankDir === 'RL';
-    layering.forEach(function(layer) {
-      var maxHeight = util.max(layer.map(function(u) { return height(g, u); }));
-      y += maxHeight / 2;
-      layer.forEach(function(u) {
-        posY(g, u, reverseY ? -y : y);
-      });
-      y += maxHeight / 2 + config.rankSep;
-    });
-
-    // Translate layout so that top left corner of bounding rectangle has
-    // coordinate (0, 0).
-    var minX = util.min(g.nodes().map(function(u) { return posX(g, u) - width(g, u) / 2; }));
-    var minY = util.min(g.nodes().map(function(u) { return posY(g, u) - height(g, u) / 2; }));
-    g.eachNode(function(u) {
-      posX(g, u, posX(g, u) - minX);
-      posY(g, u, posY(g, u) - minY);
-    });
-  }
-
-  /*
-   * Generate an ID that can be used to represent any undirected edge that is
-   * incident on `u` and `v`.
-   */
-  function undirEdgeId(u, v) {
-    return u < v
-      ? u.toString().length + ':' + u + '-' + v
-      : v.toString().length + ':' + v + '-' + u;
-  }
-
-  function findConflicts(g, layering) {
-    var conflicts = {}, // Set of conflicting edge ids
-        pos = {},       // Position of node in its layer
-        prevLayer,
-        currLayer,
-        k0,     // Position of the last inner segment in the previous layer
-        l,      // Current position in the current layer (for iteration up to `l1`)
-        k1;     // Position of the next inner segment in the previous layer or
-                // the position of the last element in the previous layer
-
-    if (layering.length <= 2) return conflicts;
-
-    function updateConflicts(v) {
-      var k = pos[v];
-      if (k < k0 || k > k1) {
-        conflicts[undirEdgeId(currLayer[l], v)] = true;
-      }
-    }
-
-    layering[1].forEach(function(u, i) { pos[u] = i; });
-    for (var i = 1; i < layering.length - 1; ++i) {
-      prevLayer = layering[i];
-      currLayer = layering[i+1];
-      k0 = 0;
-      l = 0;
-
-      // Scan current layer for next node that is incident to an inner segement
-      // between layering[i+1] and layering[i].
-      for (var l1 = 0; l1 < currLayer.length; ++l1) {
-        var u = currLayer[l1]; // Next inner segment in the current layer or
-                               // last node in the current layer
-        pos[u] = l1;
-        k1 = undefined;
-
-        if (g.node(u).dummy) {
-          var uPred = g.predecessors(u)[0];
-          // Note: In the case of self loops and sideways edges it is possible
-          // for a dummy not to have a predecessor.
-          if (uPred !== undefined && g.node(uPred).dummy)
-            k1 = pos[uPred];
-        }
-        if (k1 === undefined && l1 === currLayer.length - 1)
-          k1 = prevLayer.length - 1;
-
-        if (k1 !== undefined) {
-          for (; l <= l1; ++l) {
-            g.predecessors(currLayer[l]).forEach(updateConflicts);
-          }
-          k0 = k1;
-        }
-      }
-    }
-
-    return conflicts;
-  }
-
-  function verticalAlignment(g, layering, conflicts, relationship) {
-    var pos = {},   // Position for a node in its layer
-        root = {},  // Root of the block that the node participates in
-        align = {}; // Points to the next node in the block or, if the last
-                    // element in the block, points to the first block's root
-
-    layering.forEach(function(layer) {
-      layer.forEach(function(u, i) {
-        root[u] = u;
-        align[u] = u;
-        pos[u] = i;
-      });
-    });
-
-    layering.forEach(function(layer) {
-      var prevIdx = -1;
-      layer.forEach(function(v) {
-        var related = g[relationship](v), // Adjacent nodes from the previous layer
-            mid;                          // The mid point in the related array
-
-        if (related.length > 0) {
-          related.sort(function(x, y) { return pos[x] - pos[y]; });
-          mid = (related.length - 1) / 2;
-          related.slice(Math.floor(mid), Math.ceil(mid) + 1).forEach(function(u) {
-            if (align[v] === v) {
-              if (!conflicts[undirEdgeId(u, v)] && prevIdx < pos[u]) {
-                align[u] = v;
-                align[v] = root[v] = root[u];
-                prevIdx = pos[u];
-              }
-            }
-          });
-        }
-      });
-    });
-
-    return { pos: pos, root: root, align: align };
-  }
-
-  // This function deviates from the standard BK algorithm in two ways. First
-  // it takes into account the size of the nodes. Second it includes a fix to
-  // the original algorithm that is described in Carstens, "Node and Label
-  // Placement in a Layered Layout Algorithm".
-  function horizontalCompaction(g, layering, pos, root, align) {
-    var sink = {},       // Mapping of node id -> sink node id for class
-        maybeShift = {}, // Mapping of sink node id -> { class node id, min shift }
-        shift = {},      // Mapping of sink node id -> shift
-        pred = {},       // Mapping of node id -> predecessor node (or null)
-        xs = {};         // Calculated X positions
-
-    layering.forEach(function(layer) {
-      layer.forEach(function(u, i) {
-        sink[u] = u;
-        maybeShift[u] = {};
-        if (i > 0)
-          pred[u] = layer[i - 1];
-      });
-    });
-
-    function updateShift(toShift, neighbor, delta) {
-      if (!(neighbor in maybeShift[toShift])) {
-        maybeShift[toShift][neighbor] = delta;
-      } else {
-        maybeShift[toShift][neighbor] = Math.min(maybeShift[toShift][neighbor], delta);
-      }
-    }
-
-    function placeBlock(v) {
-      if (!(v in xs)) {
-        xs[v] = 0;
-        var w = v;
-        do {
-          if (pos[w] > 0) {
-            var u = root[pred[w]];
-            placeBlock(u);
-            if (sink[v] === v) {
-              sink[v] = sink[u];
-            }
-            var delta = sep(g, pred[w]) + sep(g, w);
-            if (sink[v] !== sink[u]) {
-              updateShift(sink[u], sink[v], xs[v] - xs[u] - delta);
-            } else {
-              xs[v] = Math.max(xs[v], xs[u] + delta);
-            }
-          }
-          w = align[w];
-        } while (w !== v);
-      }
-    }
-
-    // Root coordinates relative to sink
-    util.values(root).forEach(function(v) {
-      placeBlock(v);
-    });
-
-    // Absolute coordinates
-    // There is an assumption here that we've resolved shifts for any classes
-    // that begin at an earlier layer. We guarantee this by visiting layers in
-    // order.
-    layering.forEach(function(layer) {
-      layer.forEach(function(v) {
-        xs[v] = xs[root[v]];
-        if (v === root[v] && v === sink[v]) {
-          var minShift = 0;
-          if (v in maybeShift && Object.keys(maybeShift[v]).length > 0) {
-            minShift = util.min(Object.keys(maybeShift[v])
-                                 .map(function(u) {
-                                      return maybeShift[v][u] + (u in shift ? shift[u] : 0);
-                                      }
-                                 ));
-          }
-          shift[v] = minShift;
-        }
-      });
-    });
-
-    layering.forEach(function(layer) {
-      layer.forEach(function(v) {
-        xs[v] += shift[sink[root[v]]] || 0;
-      });
-    });
-
-    return xs;
-  }
-
-  function findMinCoord(g, layering, xs) {
-    return util.min(layering.map(function(layer) {
-      var u = layer[0];
-      return xs[u];
-    }));
-  }
-
-  function findMaxCoord(g, layering, xs) {
-    return util.max(layering.map(function(layer) {
-      var u = layer[layer.length - 1];
-      return xs[u];
-    }));
-  }
-
-  function balance(g, layering, xss) {
-    var min = {},                            // Min coordinate for the alignment
-        max = {},                            // Max coordinate for the alginment
-        smallestAlignment,
-        shift = {};                          // Amount to shift a given alignment
-
-    function updateAlignment(v) {
-      xss[alignment][v] += shift[alignment];
-    }
-
-    var smallest = Number.POSITIVE_INFINITY;
-    for (var alignment in xss) {
-      var xs = xss[alignment];
-      min[alignment] = findMinCoord(g, layering, xs);
-      max[alignment] = findMaxCoord(g, layering, xs);
-      var w = max[alignment] - min[alignment];
-      if (w < smallest) {
-        smallest = w;
-        smallestAlignment = alignment;
-      }
-    }
-
-    // Determine how much to adjust positioning for each alignment
-    ['u', 'd'].forEach(function(vertDir) {
-      ['l', 'r'].forEach(function(horizDir) {
-        var alignment = vertDir + horizDir;
-        shift[alignment] = horizDir === 'l'
-            ? min[smallestAlignment] - min[alignment]
-            : max[smallestAlignment] - max[alignment];
-      });
-    });
-
-    // Find average of medians for xss array
-    for (alignment in xss) {
-      g.eachNode(updateAlignment);
-    }
-  }
-
-  function flipHorizontally(xs) {
-    for (var u in xs) {
-      xs[u] = -xs[u];
-    }
-  }
-
-  function reverseInnerOrder(layering) {
-    layering.forEach(function(layer) {
-      layer.reverse();
-    });
-  }
-
-  function width(g, u) {
-    switch (g.graph().rankDir) {
-      case 'LR': return g.node(u).height;
-      case 'RL': return g.node(u).height;
-      default:   return g.node(u).width;
-    }
-  }
-
-  function height(g, u) {
-    switch(g.graph().rankDir) {
-      case 'LR': return g.node(u).width;
-      case 'RL': return g.node(u).width;
-      default:   return g.node(u).height;
-    }
-  }
-
-  function sep(g, u) {
-    if (config.universalSep !== null) {
-      return config.universalSep;
-    }
-    var w = width(g, u);
-    var s = g.node(u).dummy ? config.edgeSep : config.nodeSep;
-    return (w + s) / 2;
-  }
-
-  function posX(g, u, x) {
-    if (g.graph().rankDir === 'LR' || g.graph().rankDir === 'RL') {
-      if (arguments.length < 3) {
-        return g.node(u).y;
-      } else {
-        g.node(u).y = x;
-      }
-    } else {
-      if (arguments.length < 3) {
-        return g.node(u).x;
-      } else {
-        g.node(u).x = x;
-      }
-    }
-  }
-
-  function posXDebug(name, g, u, x) {
-    if (g.graph().rankDir === 'LR' || g.graph().rankDir === 'RL') {
-      if (arguments.length < 3) {
-        return g.node(u)[name];
-      } else {
-        g.node(u)[name] = x;
-      }
-    } else {
-      if (arguments.length < 3) {
-        return g.node(u)[name];
-      } else {
-        g.node(u)[name] = x;
-      }
-    }
-  }
-
-  function posY(g, u, y) {
-    if (g.graph().rankDir === 'LR' || g.graph().rankDir === 'RL') {
-      if (arguments.length < 3) {
-        return g.node(u).x;
-      } else {
-        g.node(u).x = y;
-      }
-    } else {
-      if (arguments.length < 3) {
-        return g.node(u).y;
-      } else {
-        g.node(u).y = y;
-      }
-    }
-  }
-
-  function debugPositioning(align, g, layering, xs) {
-    layering.forEach(function(l, li) {
-      var u, xU;
-      l.forEach(function(v) {
-        var xV = xs[v];
-        if (u) {
-          var s = sep(g, u) + sep(g, v);
-          if (xV - xU < s)
-            console.log('Position phase: sep violation. Align: ' + align + '. Layer: ' + li + '. ' +
-              'U: ' + u + ' V: ' + v + '. Actual sep: ' + (xV - xU) + ' Expected sep: ' + s);
-        }
-        u = v;
-        xU = xV;
-      });
-    });
-  }
-};
-
-},{"./util":26}],19:[function(require,module,exports){
-var util = require('./util'),
-    acyclic = require('./rank/acyclic'),
-    initRank = require('./rank/initRank'),
-    feasibleTree = require('./rank/feasibleTree'),
-    constraints = require('./rank/constraints'),
-    simplex = require('./rank/simplex'),
-    components = require('graphlib').alg.components,
-    filter = require('graphlib').filter;
-
-exports.run = run;
-exports.restoreEdges = restoreEdges;
-
-/*
- * Heuristic function that assigns a rank to each node of the input graph with
- * the intent of minimizing edge lengths, while respecting the `minLen`
- * attribute of incident edges.
- *
- * Prerequisites:
- *
- *  * Each edge in the input graph must have an assigned 'minLen' attribute
- */
-function run(g, useSimplex) {
-  expandSelfLoops(g);
-
-  // If there are rank constraints on nodes, then build a new graph that
-  // encodes the constraints.
-  util.time('constraints.apply', constraints.apply)(g);
-
-  expandSidewaysEdges(g);
-
-  // Reverse edges to get an acyclic graph, we keep the graph in an acyclic
-  // state until the very end.
-  util.time('acyclic', acyclic)(g);
-
-  // Convert the graph into a flat graph for ranking
-  var flatGraph = g.filterNodes(util.filterNonSubgraphs(g));
-
-  // Assign an initial ranking using DFS.
-  initRank(flatGraph);
-
-  // For each component improve the assigned ranks.
-  components(flatGraph).forEach(function(cmpt) {
-    var subgraph = flatGraph.filterNodes(filter.nodesFromList(cmpt));
-    rankComponent(subgraph, useSimplex);
-  });
-
-  // Relax original constraints
-  util.time('constraints.relax', constraints.relax(g));
-
-  // When handling nodes with constrained ranks it is possible to end up with
-  // edges that point to previous ranks. Most of the subsequent algorithms assume
-  // that edges are pointing to successive ranks only. Here we reverse any "back
-  // edges" and mark them as such. The acyclic algorithm will reverse them as a
-  // post processing step.
-  util.time('reorientEdges', reorientEdges)(g);
-}
-
-function restoreEdges(g) {
-  acyclic.undo(g);
-}
-
-/*
- * Expand self loops into three dummy nodes. One will sit above the incident
- * node, one will be at the same level, and one below. The result looks like:
- *
- *         /--<--x--->--\
- *     node              y
- *         \--<--z--->--/
- *
- * Dummy nodes x, y, z give us the shape of a loop and node y is where we place
- * the label.
- *
- * TODO: consolidate knowledge of dummy node construction.
- * TODO: support minLen = 2
- */
-function expandSelfLoops(g) {
-  g.eachEdge(function(e, u, v, a) {
-    if (u === v) {
-      var x = addDummyNode(g, e, u, v, a, 0, false),
-          y = addDummyNode(g, e, u, v, a, 1, true),
-          z = addDummyNode(g, e, u, v, a, 2, false);
-      g.addEdge(null, x, u, {minLen: 1, selfLoop: true});
-      g.addEdge(null, x, y, {minLen: 1, selfLoop: true});
-      g.addEdge(null, u, z, {minLen: 1, selfLoop: true});
-      g.addEdge(null, y, z, {minLen: 1, selfLoop: true});
-      g.delEdge(e);
-    }
-  });
-}
-
-function expandSidewaysEdges(g) {
-  g.eachEdge(function(e, u, v, a) {
-    if (u === v) {
-      var origEdge = a.originalEdge,
-          dummy = addDummyNode(g, origEdge.e, origEdge.u, origEdge.v, origEdge.value, 0, true);
-      g.addEdge(null, u, dummy, {minLen: 1});
-      g.addEdge(null, dummy, v, {minLen: 1});
-      g.delEdge(e);
-    }
-  });
-}
-
-function addDummyNode(g, e, u, v, a, index, isLabel) {
-  return g.addNode(null, {
-    width: isLabel ? a.width : 0,
-    height: isLabel ? a.height : 0,
-    edge: { id: e, source: u, target: v, attrs: a },
-    dummy: true,
-    index: index
-  });
-}
-
-function reorientEdges(g) {
-  g.eachEdge(function(e, u, v, value) {
-    if (g.node(u).rank > g.node(v).rank) {
-      g.delEdge(e);
-      value.reversed = true;
-      g.addEdge(e, v, u, value);
-    }
-  });
-}
-
-function rankComponent(subgraph, useSimplex) {
-  var spanningTree = feasibleTree(subgraph);
-
-  if (useSimplex) {
-    util.log(1, 'Using network simplex for ranking');
-    simplex(subgraph, spanningTree);
-  }
-  normalize(subgraph);
-}
-
-function normalize(g) {
-  var m = util.min(g.nodes().map(function(u) { return g.node(u).rank; }));
-  g.eachNode(function(u, node) { node.rank -= m; });
-}
-
-},{"./rank/acyclic":20,"./rank/constraints":21,"./rank/feasibleTree":22,"./rank/initRank":23,"./rank/simplex":25,"./util":26,"graphlib":28}],20:[function(require,module,exports){
-var util = require('../util');
-
-module.exports = acyclic;
-module.exports.undo = undo;
-
-/*
- * This function takes a directed graph that may have cycles and reverses edges
- * as appropriate to break these cycles. Each reversed edge is assigned a
- * `reversed` attribute with the value `true`.
- *
- * There should be no self loops in the graph.
- */
-function acyclic(g) {
-  var onStack = {},
-      visited = {},
-      reverseCount = 0;
-  
-  function dfs(u) {
-    if (u in visited) return;
-    visited[u] = onStack[u] = true;
-    g.outEdges(u).forEach(function(e) {
-      var t = g.target(e),
-          value;
-
-      if (u === t) {
-        console.error('Warning: found self loop "' + e + '" for node "' + u + '"');
-      } else if (t in onStack) {
-        value = g.edge(e);
-        g.delEdge(e);
-        value.reversed = true;
-        ++reverseCount;
-        g.addEdge(e, t, u, value);
-      } else {
-        dfs(t);
-      }
-    });
-
-    delete onStack[u];
-  }
-
-  g.eachNode(function(u) { dfs(u); });
-
-  util.log(2, 'Acyclic Phase: reversed ' + reverseCount + ' edge(s)');
-
-  return reverseCount;
-}
-
-/*
- * Given a graph that has had the acyclic operation applied, this function
- * undoes that operation. More specifically, any edge with the `reversed`
- * attribute is again reversed to restore the original direction of the edge.
- */
-function undo(g) {
-  g.eachEdge(function(e, s, t, a) {
-    if (a.reversed) {
-      delete a.reversed;
-      g.delEdge(e);
-      g.addEdge(e, t, s, a);
-    }
-  });
-}
-
-},{"../util":26}],21:[function(require,module,exports){
-exports.apply = function(g) {
-  function dfs(sg) {
-    var rankSets = {};
-    g.children(sg).forEach(function(u) {
-      if (g.children(u).length) {
-        dfs(u);
-        return;
-      }
-
-      var value = g.node(u),
-          prefRank = value.prefRank;
-      if (prefRank !== undefined) {
-        if (!checkSupportedPrefRank(prefRank)) { return; }
-
-        if (!(prefRank in rankSets)) {
-          rankSets.prefRank = [u];
-        } else {
-          rankSets.prefRank.push(u);
-        }
-
-        var newU = rankSets[prefRank];
-        if (newU === undefined) {
-          newU = rankSets[prefRank] = g.addNode(null, { originalNodes: [] });
-          g.parent(newU, sg);
-        }
-
-        redirectInEdges(g, u, newU, prefRank === 'min');
-        redirectOutEdges(g, u, newU, prefRank === 'max');
-
-        // Save original node and remove it from reduced graph
-        g.node(newU).originalNodes.push({ u: u, value: value, parent: sg });
-        g.delNode(u);
-      }
-    });
-
-    addLightEdgesFromMinNode(g, sg, rankSets.min);
-    addLightEdgesToMaxNode(g, sg, rankSets.max);
-  }
-
-  dfs(null);
-};
-
-function checkSupportedPrefRank(prefRank) {
-  if (prefRank !== 'min' && prefRank !== 'max' && prefRank.indexOf('same_') !== 0) {
-    console.error('Unsupported rank type: ' + prefRank);
-    return false;
-  }
-  return true;
-}
-
-function redirectInEdges(g, u, newU, reverse) {
-  g.inEdges(u).forEach(function(e) {
-    var origValue = g.edge(e),
-        value;
-    if (origValue.originalEdge) {
-      value = origValue;
-    } else {
-      value =  {
-        originalEdge: { e: e, u: g.source(e), v: g.target(e), value: origValue },
-        minLen: g.edge(e).minLen
-      };
-    }
-
-    // Do not reverse edges for self-loops.
-    if (origValue.selfLoop) {
-      reverse = false;
-    }
-
-    if (reverse) {
-      // Ensure that all edges to min are reversed
-      g.addEdge(null, newU, g.source(e), value);
-      value.reversed = true;
-    } else {
-      g.addEdge(null, g.source(e), newU, value);
-    }
-  });
-}
-
-function redirectOutEdges(g, u, newU, reverse) {
-  g.outEdges(u).forEach(function(e) {
-    var origValue = g.edge(e),
-        value;
-    if (origValue.originalEdge) {
-      value = origValue;
-    } else {
-      value =  {
-        originalEdge: { e: e, u: g.source(e), v: g.target(e), value: origValue },
-        minLen: g.edge(e).minLen
-      };
-    }
-
-    // Do not reverse edges for self-loops.
-    if (origValue.selfLoop) {
-      reverse = false;
-    }
-
-    if (reverse) {
-      // Ensure that all edges from max are reversed
-      g.addEdge(null, g.target(e), newU, value);
-      value.reversed = true;
-    } else {
-      g.addEdge(null, newU, g.target(e), value);
-    }
-  });
-}
-
-function addLightEdgesFromMinNode(g, sg, minNode) {
-  if (minNode !== undefined) {
-    g.children(sg).forEach(function(u) {
-      // The dummy check ensures we don't add an edge if the node is involved
-      // in a self loop or sideways edge.
-      if (u !== minNode && !g.outEdges(minNode, u).length && !g.node(u).dummy) {
-        g.addEdge(null, minNode, u, { minLen: 0 });
-      }
-    });
-  }
-}
-
-function addLightEdgesToMaxNode(g, sg, maxNode) {
-  if (maxNode !== undefined) {
-    g.children(sg).forEach(function(u) {
-      // The dummy check ensures we don't add an edge if the node is involved
-      // in a self loop or sideways edge.
-      if (u !== maxNode && !g.outEdges(u, maxNode).length && !g.node(u).dummy) {
-        g.addEdge(null, u, maxNode, { minLen: 0 });
-      }
-    });
-  }
-}
-
-/*
- * This function "relaxes" the constraints applied previously by the "apply"
- * function. It expands any nodes that were collapsed and assigns the rank of
- * the collapsed node to each of the expanded nodes. It also restores the
- * original edges and removes any dummy edges pointing at the collapsed nodes.
- *
- * Note that the process of removing collapsed nodes also removes dummy edges
- * automatically.
- */
-exports.relax = function(g) {
-  // Save original edges
-  var originalEdges = [];
-  g.eachEdge(function(e, u, v, value) {
-    var originalEdge = value.originalEdge;
-    if (originalEdge) {
-      originalEdges.push(originalEdge);
-    }
-  });
-
-  // Expand collapsed nodes
-  g.eachNode(function(u, value) {
-    var originalNodes = value.originalNodes;
-    if (originalNodes) {
-      originalNodes.forEach(function(originalNode) {
-        originalNode.value.rank = value.rank;
-        g.addNode(originalNode.u, originalNode.value);
-        g.parent(originalNode.u, originalNode.parent);
-      });
-      g.delNode(u);
-    }
-  });
-
-  // Restore original edges
-  originalEdges.forEach(function(edge) {
-    g.addEdge(edge.e, edge.u, edge.v, edge.value);
-  });
-};
-
-},{}],22:[function(require,module,exports){
-/* jshint -W079 */
-var Set = require('cp-data').Set,
-/* jshint +W079 */
-    Digraph = require('graphlib').Digraph,
-    util = require('../util');
-
-module.exports = feasibleTree;
-
-/*
- * Given an acyclic graph with each node assigned a `rank` attribute, this
- * function constructs and returns a spanning tree. This function may reduce
- * the length of some edges from the initial rank assignment while maintaining
- * the `minLen` specified by each edge.
- *
- * Prerequisites:
- *
- * * The input graph is acyclic
- * * Each node in the input graph has an assigned `rank` attribute
- * * Each edge in the input graph has an assigned `minLen` attribute
- *
- * Outputs:
- *
- * A feasible spanning tree for the input graph (i.e. a spanning tree that
- * respects each graph edge's `minLen` attribute) represented as a Digraph with
- * a `root` attribute on graph.
- *
- * Nodes have the same id and value as that in the input graph.
- *
- * Edges in the tree have arbitrarily assigned ids. The attributes for edges
- * include `reversed`. `reversed` indicates that the edge is a
- * back edge in the input graph.
- */
-function feasibleTree(g) {
-  var remaining = new Set(g.nodes()),
-      tree = new Digraph();
-
-  if (remaining.size() === 1) {
-    var root = g.nodes()[0];
-    tree.addNode(root, {});
-    tree.graph({ root: root });
-    return tree;
-  }
-
-  function addTightEdges(v) {
-    var continueToScan = true;
-    g.predecessors(v).forEach(function(u) {
-      if (remaining.has(u) && !slack(g, u, v)) {
-        if (remaining.has(v)) {
-          tree.addNode(v, {});
-          remaining.remove(v);
-          tree.graph({ root: v });
-        }
-
-        tree.addNode(u, {});
-        tree.addEdge(null, u, v, { reversed: true });
-        remaining.remove(u);
-        addTightEdges(u);
-        continueToScan = false;
-      }
-    });
-
-    g.successors(v).forEach(function(w)  {
-      if (remaining.has(w) && !slack(g, v, w)) {
-        if (remaining.has(v)) {
-          tree.addNode(v, {});
-          remaining.remove(v);
-          tree.graph({ root: v });
-        }
-
-        tree.addNode(w, {});
-        tree.addEdge(null, v, w, {});
-        remaining.remove(w);
-        addTightEdges(w);
-        continueToScan = false;
-      }
-    });
-    return continueToScan;
-  }
-
-  function createTightEdge() {
-    var minSlack = Number.MAX_VALUE;
-    remaining.keys().forEach(function(v) {
-      g.predecessors(v).forEach(function(u) {
-        if (!remaining.has(u)) {
-          var edgeSlack = slack(g, u, v);
-          if (Math.abs(edgeSlack) < Math.abs(minSlack)) {
-            minSlack = -edgeSlack;
-          }
-        }
-      });
-
-      g.successors(v).forEach(function(w) {
-        if (!remaining.has(w)) {
-          var edgeSlack = slack(g, v, w);
-          if (Math.abs(edgeSlack) < Math.abs(minSlack)) {
-            minSlack = edgeSlack;
-          }
-        }
-      });
-    });
-
-    tree.eachNode(function(u) { g.node(u).rank -= minSlack; });
-  }
-
-  while (remaining.size()) {
-    var nodesToSearch = !tree.order() ? remaining.keys() : tree.nodes();
-    for (var i = 0, il = nodesToSearch.length;
-         i < il && addTightEdges(nodesToSearch[i]);
-         ++i);
-    if (remaining.size()) {
-      createTightEdge();
-    }
-  }
-
-  return tree;
-}
-
-function slack(g, u, v) {
-  var rankDiff = g.node(v).rank - g.node(u).rank;
-  var maxMinLen = util.max(g.outEdges(u, v)
-                            .map(function(e) { return g.edge(e).minLen; }));
-  return rankDiff - maxMinLen;
-}
-
-},{"../util":26,"cp-data":5,"graphlib":28}],23:[function(require,module,exports){
-var util = require('../util'),
-    topsort = require('graphlib').alg.topsort;
-
-module.exports = initRank;
-
-/*
- * Assigns a `rank` attribute to each node in the input graph and ensures that
- * this rank respects the `minLen` attribute of incident edges.
- *
- * Prerequisites:
- *
- *  * The input graph must be acyclic
- *  * Each edge in the input graph must have an assigned 'minLen' attribute
- */
-function initRank(g) {
-  var sorted = topsort(g);
-
-  sorted.forEach(function(u) {
-    var inEdges = g.inEdges(u);
-    if (inEdges.length === 0) {
-      g.node(u).rank = 0;
-      return;
-    }
-
-    var minLens = inEdges.map(function(e) {
-      return g.node(g.source(e)).rank + g.edge(e).minLen;
-    });
-    g.node(u).rank = util.max(minLens);
-  });
-}
-
-},{"../util":26,"graphlib":28}],24:[function(require,module,exports){
-module.exports = {
-  slack: slack
-};
-
-/*
- * A helper to calculate the slack between two nodes (`u` and `v`) given a
- * `minLen` constraint. The slack represents how much the distance between `u`
- * and `v` could shrink while maintaining the `minLen` constraint. If the value
- * is negative then the constraint is currently violated.
- *
-  This function requires that `u` and `v` are in `graph` and they both have a
-  `rank` attribute.
- */
-function slack(graph, u, v, minLen) {
-  return Math.abs(graph.node(u).rank - graph.node(v).rank) - minLen;
-}
-
-},{}],25:[function(require,module,exports){
-var util = require('../util'),
-    rankUtil = require('./rankUtil');
-
-module.exports = simplex;
-
-function simplex(graph, spanningTree) {
-  // The network simplex algorithm repeatedly replaces edges of
-  // the spanning tree with negative cut values until no such
-  // edge exists.
-  initCutValues(graph, spanningTree);
-  while (true) {
-    var e = leaveEdge(spanningTree);
-    if (e === null) break;
-    var f = enterEdge(graph, spanningTree, e);
-    exchange(graph, spanningTree, e, f);
-  }
-}
-
-/*
- * Set the cut values of edges in the spanning tree by a depth-first
- * postorder traversal.  The cut value corresponds to the cost, in
- * terms of a ranking's edge length sum, of lengthening an edge.
- * Negative cut values typically indicate edges that would yield a
- * smaller edge length sum if they were lengthened.
- */
-function initCutValues(graph, spanningTree) {
-  computeLowLim(spanningTree);
-
-  spanningTree.eachEdge(function(id, u, v, treeValue) {
-    treeValue.cutValue = 0;
-  });
-
-  // Propagate cut values up the tree.
-  function dfs(n) {
-    var children = spanningTree.successors(n);
-    for (var c in children) {
-      var child = children[c];
-      dfs(child);
-    }
-    if (n !== spanningTree.graph().root) {
-      setCutValue(graph, spanningTree, n);
-    }
-  }
-  dfs(spanningTree.graph().root);
-}
-
-/*
- * Perform a DFS postorder traversal, labeling each node v with
- * its traversal order 'lim(v)' and the minimum traversal number
- * of any of its descendants 'low(v)'.  This provides an efficient
- * way to test whether u is an ancestor of v since
- * low(u) <= lim(v) <= lim(u) if and only if u is an ancestor.
- */
-function computeLowLim(tree) {
-  var postOrderNum = 0;
-  
-  function dfs(n) {
-    var children = tree.successors(n);
-    var low = postOrderNum;
-    for (var c in children) {
-      var child = children[c];
-      dfs(child);
-      low = Math.min(low, tree.node(child).low);
-    }
-    tree.node(n).low = low;
-    tree.node(n).lim = postOrderNum++;
-  }
-
-  dfs(tree.graph().root);
-}
-
-/*
- * To compute the cut value of the edge parent -> child, we consider
- * it and any other graph edges to or from the child.
- *          parent
- *             |
- *           child
- *          /      \
- *         u        v
- */
-function setCutValue(graph, tree, child) {
-  var parentEdge = tree.inEdges(child)[0];
-
-  // List of child's children in the spanning tree.
-  var grandchildren = [];
-  var grandchildEdges = tree.outEdges(child);
-  for (var gce in grandchildEdges) {
-    grandchildren.push(tree.target(grandchildEdges[gce]));
-  }
-
-  var cutValue = 0;
-
-  // TODO: Replace unit increment/decrement with edge weights.
-  var E = 0;    // Edges from child to grandchild's subtree.
-  var F = 0;    // Edges to child from grandchild's subtree.
-  var G = 0;    // Edges from child to nodes outside of child's subtree.
-  var H = 0;    // Edges from nodes outside of child's subtree to child.
-
-  // Consider all graph edges from child.
-  var outEdges = graph.outEdges(child);
-  var gc;
-  for (var oe in outEdges) {
-    var succ = graph.target(outEdges[oe]);
-    for (gc in grandchildren) {
-      if (inSubtree(tree, succ, grandchildren[gc])) {
-        E++;
-      }
-    }
-    if (!inSubtree(tree, succ, child)) {
-      G++;
-    }
-  }
-
-  // Consider all graph edges to child.
-  var inEdges = graph.inEdges(child);
-  for (var ie in inEdges) {
-    var pred = graph.source(inEdges[ie]);
-    for (gc in grandchildren) {
-      if (inSubtree(tree, pred, grandchildren[gc])) {
-        F++;
-      }
-    }
-    if (!inSubtree(tree, pred, child)) {
-      H++;
-    }
-  }
-
-  // Contributions depend on the alignment of the parent -> child edge
-  // and the child -> u or v edges.
-  var grandchildCutSum = 0;
-  for (gc in grandchildren) {
-    var cv = tree.edge(grandchildEdges[gc]).cutValue;
-    if (!tree.edge(grandchildEdges[gc]).reversed) {
-      grandchildCutSum += cv;
-    } else {
-      grandchildCutSum -= cv;
-    }
-  }
-
-  if (!tree.edge(parentEdge).reversed) {
-    cutValue += grandchildCutSum - E + F - G + H;
-  } else {
-    cutValue -= grandchildCutSum - E + F - G + H;
-  }
-
-  tree.edge(parentEdge).cutValue = cutValue;
-}
-
-/*
- * Return whether n is a node in the subtree with the given
- * root.
- */
-function inSubtree(tree, n, root) {
-  return (tree.node(root).low <= tree.node(n).lim &&
-          tree.node(n).lim <= tree.node(root).lim);
-}
-
-/*
- * Return an edge from the tree with a negative cut value, or null if there
- * is none.
- */
-function leaveEdge(tree) {
-  var edges = tree.edges();
-  for (var n in edges) {
-    var e = edges[n];
-    var treeValue = tree.edge(e);
-    if (treeValue.cutValue < 0) {
-      return e;
-    }
-  }
-  return null;
-}
-
-/*
- * The edge e should be an edge in the tree, with an underlying edge
- * in the graph, with a negative cut value.  Of the two nodes incident
- * on the edge, take the lower one.  enterEdge returns an edge with
- * minimum slack going from outside of that node's subtree to inside
- * of that node's subtree.
- */
-function enterEdge(graph, tree, e) {
-  var source = tree.source(e);
-  var target = tree.target(e);
-  var lower = tree.node(target).lim < tree.node(source).lim ? target : source;
-
-  // Is the tree edge aligned with the graph edge?
-  var aligned = !tree.edge(e).reversed;
-
-  var minSlack = Number.POSITIVE_INFINITY;
-  var minSlackEdge;
-  if (aligned) {
-    graph.eachEdge(function(id, u, v, value) {
-      if (id !== e && inSubtree(tree, u, lower) && !inSubtree(tree, v, lower)) {
-        var slack = rankUtil.slack(graph, u, v, value.minLen);
-        if (slack < minSlack) {
-          minSlack = slack;
-          minSlackEdge = id;
-        }
-      }
-    });
-  } else {
-    graph.eachEdge(function(id, u, v, value) {
-      if (id !== e && !inSubtree(tree, u, lower) && inSubtree(tree, v, lower)) {
-        var slack = rankUtil.slack(graph, u, v, value.minLen);
-        if (slack < minSlack) {
-          minSlack = slack;
-          minSlackEdge = id;
-        }
-      }
-    });
-  }
-
-  if (minSlackEdge === undefined) {
-    var outside = [];
-    var inside = [];
-    graph.eachNode(function(id) {
-      if (!inSubtree(tree, id, lower)) {
-        outside.push(id);
-      } else {
-        inside.push(id);
-      }
-    });
-    throw new Error('No edge found from outside of tree to inside');
-  }
-
-  return minSlackEdge;
-}
-
-/*
- * Replace edge e with edge f in the tree, recalculating the tree root,
- * the nodes' low and lim properties and the edges' cut values.
- */
-function exchange(graph, tree, e, f) {
-  tree.delEdge(e);
-  var source = graph.source(f);
-  var target = graph.target(f);
-
-  // Redirect edges so that target is the root of its subtree.
-  function redirect(v) {
-    var edges = tree.inEdges(v);
-    for (var i in edges) {
-      var e = edges[i];
-      var u = tree.source(e);
-      var value = tree.edge(e);
-      redirect(u);
-      tree.delEdge(e);
-      value.reversed = !value.reversed;
-      tree.addEdge(e, v, u, value);
-    }
-  }
-
-  redirect(target);
-
-  var root = source;
-  var edges = tree.inEdges(root);
-  while (edges.length > 0) {
-    root = tree.source(edges[0]);
-    edges = tree.inEdges(root);
-  }
-
-  tree.graph().root = root;
-
-  tree.addEdge(null, source, target, {cutValue: 0});
-
-  initCutValues(graph, tree);
-
-  adjustRanks(graph, tree);
-}
-
-/*
- * Reset the ranks of all nodes based on the current spanning tree.
- * The rank of the tree's root remains unchanged, while all other
- * nodes are set to the sum of minimum length constraints along
- * the path from the root.
- */
-function adjustRanks(graph, tree) {
-  function dfs(p) {
-    var children = tree.successors(p);
-    children.forEach(function(c) {
-      var minLen = minimumLength(graph, p, c);
-      graph.node(c).rank = graph.node(p).rank + minLen;
-      dfs(c);
-    });
-  }
-
-  dfs(tree.graph().root);
-}
-
-/*
- * If u and v are connected by some edges in the graph, return the
- * minimum length of those edges, as a positive number if v succeeds
- * u and as a negative number if v precedes u.
- */
-function minimumLength(graph, u, v) {
-  var outEdges = graph.outEdges(u, v);
-  if (outEdges.length > 0) {
-    return util.max(outEdges.map(function(e) {
-      return graph.edge(e).minLen;
-    }));
-  }
-
-  var inEdges = graph.inEdges(u, v);
-  if (inEdges.length > 0) {
-    return -util.max(inEdges.map(function(e) {
-      return graph.edge(e).minLen;
-    }));
-  }
-}
-
-},{"../util":26,"./rankUtil":24}],26:[function(require,module,exports){
-/*
- * Returns the smallest value in the array.
- */
-exports.min = function(values) {
-  return Math.min.apply(Math, values);
-};
-
-/*
- * Returns the largest value in the array.
- */
-exports.max = function(values) {
-  return Math.max.apply(Math, values);
-};
-
-/*
- * Returns `true` only if `f(x)` is `true` for all `x` in `xs`. Otherwise
- * returns `false`. This function will return immediately if it finds a
- * case where `f(x)` does not hold.
- */
-exports.all = function(xs, f) {
-  for (var i = 0; i < xs.length; ++i) {
-    if (!f(xs[i])) {
-      return false;
-    }
-  }
-  return true;
-};
-
-/*
- * Accumulates the sum of elements in the given array using the `+` operator.
- */
-exports.sum = function(values) {
-  return values.reduce(function(acc, x) { return acc + x; }, 0);
-};
-
-/*
- * Returns an array of all values in the given object.
- */
-exports.values = function(obj) {
-  return Object.keys(obj).map(function(k) { return obj[k]; });
-};
-
-exports.shuffle = function(array) {
-  for (i = array.length - 1; i > 0; --i) {
-    var j = Math.floor(Math.random() * (i + 1));
-    var aj = array[j];
-    array[j] = array[i];
-    array[i] = aj;
-  }
-};
-
-exports.propertyAccessor = function(self, config, field, setHook) {
-  return function(x) {
-    if (!arguments.length) return config[field];
-    config[field] = x;
-    if (setHook) setHook(x);
-    return self;
-  };
-};
-
-/*
- * Given a layered, directed graph with `rank` and `order` node attributes,
- * this function returns an array of ordered ranks. Each rank contains an array
- * of the ids of the nodes in that rank in the order specified by the `order`
- * attribute.
- */
-exports.ordering = function(g) {
-  var ordering = [];
-  g.eachNode(function(u, value) {
-    var rank = ordering[value.rank] || (ordering[value.rank] = []);
-    rank[value.order] = u;
-  });
-  return ordering;
-};
-
-/*
- * A filter that can be used with `filterNodes` to get a graph that only
- * includes nodes that do not contain others nodes.
- */
-exports.filterNonSubgraphs = function(g) {
-  return function(u) {
-    return g.children(u).length === 0;
-  };
-};
-
-/*
- * Returns a new function that wraps `func` with a timer. The wrapper logs the
- * time it takes to execute the function.
- *
- * The timer will be enabled provided `log.level >= 1`.
- */
-function time(name, func) {
-  return function() {
-    var start = new Date().getTime();
-    try {
-      return func.apply(null, arguments);
-    } finally {
-      log(1, name + ' time: ' + (new Date().getTime() - start) + 'ms');
-    }
-  };
-}
-time.enabled = false;
-
-exports.time = time;
-
-/*
- * A global logger with the specification `log(level, message, ...)` that
- * will log a message to the console if `log.level >= level`.
- */
-function log(level) {
-  if (log.level >= level) {
-    console.log.apply(console, Array.prototype.slice.call(arguments, 1));
-  }
-}
-log.level = 0;
-
-exports.log = log;
-
-},{}],27:[function(require,module,exports){
-module.exports = '0.4.5';
-
-},{}],28:[function(require,module,exports){
-exports.Graph = require("./lib/Graph");
-exports.Digraph = require("./lib/Digraph");
-exports.CGraph = require("./lib/CGraph");
-exports.CDigraph = require("./lib/CDigraph");
-require("./lib/graph-converters");
-
-exports.alg = {
-  isAcyclic: require("./lib/alg/isAcyclic"),
-  components: require("./lib/alg/components"),
-  dijkstra: require("./lib/alg/dijkstra"),
-  dijkstraAll: require("./lib/alg/dijkstraAll"),
-  findCycles: require("./lib/alg/findCycles"),
-  floydWarshall: require("./lib/alg/floydWarshall"),
-  postorder: require("./lib/alg/postorder"),
-  preorder: require("./lib/alg/preorder"),
-  prim: require("./lib/alg/prim"),
-  tarjan: require("./lib/alg/tarjan"),
-  topsort: require("./lib/alg/topsort")
-};
-
-exports.converter = {
-  json: require("./lib/converter/json.js")
-};
-
-var filter = require("./lib/filter");
-exports.filter = {
-  all: filter.all,
-  nodesFromList: filter.nodesFromList
-};
-
-exports.version = require("./lib/version");
-
-},{"./lib/CDigraph":30,"./lib/CGraph":31,"./lib/Digraph":32,"./lib/Graph":33,"./lib/alg/components":34,"./lib/alg/dijkstra":35,"./lib/alg/dijkstraAll":36,"./lib/alg/findCycles":37,"./lib/alg/floydWarshall":38,"./lib/alg/isAcyclic":39,"./lib/alg/postorder":40,"./lib/alg/preorder":41,"./lib/alg/prim":42,"./lib/alg/tarjan":43,"./lib/alg/topsort":44,"./lib/converter/json.js":46,"./lib/filter":47,"./lib/graph-converters":48,"./lib/version":50}],29:[function(require,module,exports){
-/* jshint -W079 */
-var Set = require("cp-data").Set;
-/* jshint +W079 */
-
-module.exports = BaseGraph;
-
-function BaseGraph() {
-  // The value assigned to the graph itself.
-  this._value = undefined;
-
-  // Map of node id -> { id, value }
-  this._nodes = {};
-
-  // Map of edge id -> { id, u, v, value }
-  this._edges = {};
-
-  // Used to generate a unique id in the graph
-  this._nextId = 0;
-}
-
-// Number of nodes
-BaseGraph.prototype.order = function() {
-  return Object.keys(this._nodes).length;
-};
-
-// Number of edges
-BaseGraph.prototype.size = function() {
-  return Object.keys(this._edges).length;
-};
-
-// Accessor for graph level value
-BaseGraph.prototype.graph = function(value) {
-  if (arguments.length === 0) {
-    return this._value;
-  }
-  this._value = value;
-};
-
-BaseGraph.prototype.hasNode = function(u) {
-  return u in this._nodes;
-};
-
-BaseGraph.prototype.node = function(u, value) {
-  var node = this._strictGetNode(u);
-  if (arguments.length === 1) {
-    return node.value;
-  }
-  node.value = value;
-};
-
-BaseGraph.prototype.nodes = function() {
-  var nodes = [];
-  this.eachNode(function(id) { nodes.push(id); });
-  return nodes;
-};
-
-BaseGraph.prototype.eachNode = function(func) {
-  for (var k in this._nodes) {
-    var node = this._nodes[k];
-    func(node.id, node.value);
-  }
-};
-
-BaseGraph.prototype.hasEdge = function(e) {
-  return e in this._edges;
-};
-
-BaseGraph.prototype.edge = function(e, value) {
-  var edge = this._strictGetEdge(e);
-  if (arguments.length === 1) {
-    return edge.value;
-  }
-  edge.value = value;
-};
-
-BaseGraph.prototype.edges = function() {
-  var es = [];
-  this.eachEdge(function(id) { es.push(id); });
-  return es;
-};
-
-BaseGraph.prototype.eachEdge = function(func) {
-  for (var k in this._edges) {
-    var edge = this._edges[k];
-    func(edge.id, edge.u, edge.v, edge.value);
-  }
-};
-
-BaseGraph.prototype.incidentNodes = function(e) {
-  var edge = this._strictGetEdge(e);
-  return [edge.u, edge.v];
-};
-
-BaseGraph.prototype.addNode = function(u, value) {
-  if (u === undefined || u === null) {
-    do {
-      u = "_" + (++this._nextId);
-    } while (this.hasNode(u));
-  } else if (this.hasNode(u)) {
-    throw new Error("Graph already has node '" + u + "'");
-  }
-  this._nodes[u] = { id: u, value: value };
-  return u;
-};
-
-BaseGraph.prototype.delNode = function(u) {
-  this._strictGetNode(u);
-  this.incidentEdges(u).forEach(function(e) { this.delEdge(e); }, this);
-  delete this._nodes[u];
-};
-
-// inMap and outMap are opposite sides of an incidence map. For example, for
-// Graph these would both come from the _incidentEdges map, while for Digraph
-// they would come from _inEdges and _outEdges.
-BaseGraph.prototype._addEdge = function(e, u, v, value, inMap, outMap) {
-  this._strictGetNode(u);
-  this._strictGetNode(v);
-
-  if (e === undefined || e === null) {
-    do {
-      e = "_" + (++this._nextId);
-    } while (this.hasEdge(e));
-  }
-  else if (this.hasEdge(e)) {
-    throw new Error("Graph already has edge '" + e + "'");
-  }
-
-  this._edges[e] = { id: e, u: u, v: v, value: value };
-  addEdgeToMap(inMap[v], u, e);
-  addEdgeToMap(outMap[u], v, e);
-
-  return e;
-};
-
-// See note for _addEdge regarding inMap and outMap.
-BaseGraph.prototype._delEdge = function(e, inMap, outMap) {
-  var edge = this._strictGetEdge(e);
-  delEdgeFromMap(inMap[edge.v], edge.u, e);
-  delEdgeFromMap(outMap[edge.u], edge.v, e);
-  delete this._edges[e];
-};
-
-BaseGraph.prototype.copy = function() {
-  var copy = new this.constructor();
-  copy.graph(this.graph());
-  this.eachNode(function(u, value) { copy.addNode(u, value); });
-  this.eachEdge(function(e, u, v, value) { copy.addEdge(e, u, v, value); });
-  copy._nextId = this._nextId;
-  return copy;
-};
-
-BaseGraph.prototype.filterNodes = function(filter) {
-  var copy = new this.constructor();
-  copy.graph(this.graph());
-  this.eachNode(function(u, value) {
-    if (filter(u)) {
-      copy.addNode(u, value);
-    }
-  });
-  this.eachEdge(function(e, u, v, value) {
-    if (copy.hasNode(u) && copy.hasNode(v)) {
-      copy.addEdge(e, u, v, value);
-    }
-  });
-  return copy;
-};
-
-BaseGraph.prototype._strictGetNode = function(u) {
-  var node = this._nodes[u];
-  if (node === undefined) {
-    throw new Error("Node '" + u + "' is not in graph");
-  }
-  return node;
-};
-
-BaseGraph.prototype._strictGetEdge = function(e) {
-  var edge = this._edges[e];
-  if (edge === undefined) {
-    throw new Error("Edge '" + e + "' is not in graph");
-  }
-  return edge;
-};
-
-function addEdgeToMap(map, v, e) {
-  (map[v] || (map[v] = new Set())).add(e);
-}
-
-function delEdgeFromMap(map, v, e) {
-  var vEntry = map[v];
-  vEntry.remove(e);
-  if (vEntry.size() === 0) {
-    delete map[v];
-  }
-}
-
-
-},{"cp-data":5}],30:[function(require,module,exports){
-var Digraph = require("./Digraph"),
-    compoundify = require("./compoundify");
-
-var CDigraph = compoundify(Digraph);
-
-module.exports = CDigraph;
-
-CDigraph.fromDigraph = function(src) {
-  var g = new CDigraph(),
-      graphValue = src.graph();
-
-  if (graphValue !== undefined) {
-    g.graph(graphValue);
-  }
-
-  src.eachNode(function(u, value) {
-    if (value === undefined) {
-      g.addNode(u);
-    } else {
-      g.addNode(u, value);
-    }
-  });
-  src.eachEdge(function(e, u, v, value) {
-    if (value === undefined) {
-      g.addEdge(null, u, v);
-    } else {
-      g.addEdge(null, u, v, value);
-    }
-  });
-  return g;
-};
-
-CDigraph.prototype.toString = function() {
-  return "CDigraph " + JSON.stringify(this, null, 2);
-};
-
-},{"./Digraph":32,"./compoundify":45}],31:[function(require,module,exports){
-var Graph = require("./Graph"),
-    compoundify = require("./compoundify");
-
-var CGraph = compoundify(Graph);
-
-module.exports = CGraph;
-
-CGraph.fromGraph = function(src) {
-  var g = new CGraph(),
-      graphValue = src.graph();
-
-  if (graphValue !== undefined) {
-    g.graph(graphValue);
-  }
-
-  src.eachNode(function(u, value) {
-    if (value === undefined) {
-      g.addNode(u);
-    } else {
-      g.addNode(u, value);
-    }
-  });
-  src.eachEdge(function(e, u, v, value) {
-    if (value === undefined) {
-      g.addEdge(null, u, v);
-    } else {
-      g.addEdge(null, u, v, value);
-    }
-  });
-  return g;
-};
-
-CGraph.prototype.toString = function() {
-  return "CGraph " + JSON.stringify(this, null, 2);
-};
-
-},{"./Graph":33,"./compoundify":45}],32:[function(require,module,exports){
-/*
- * This file is organized with in the following order:
- *
- * Exports
- * Graph constructors
- * Graph queries (e.g. nodes(), edges()
- * Graph mutators
- * Helper functions
- */
-
-var util = require("./util"),
-    BaseGraph = require("./BaseGraph"),
-/* jshint -W079 */
-    Set = require("cp-data").Set;
-/* jshint +W079 */
-
-module.exports = Digraph;
-
-/*
- * Constructor to create a new directed multi-graph.
- */
-function Digraph() {
-  BaseGraph.call(this);
-
-  /*! Map of sourceId -> {targetId -> Set of edge ids} */
-  this._inEdges = {};
-
-  /*! Map of targetId -> {sourceId -> Set of edge ids} */
-  this._outEdges = {};
-}
-
-Digraph.prototype = new BaseGraph();
-Digraph.prototype.constructor = Digraph;
-
-/*
- * Always returns `true`.
- */
-Digraph.prototype.isDirected = function() {
-  return true;
-};
-
-/*
- * Returns all successors of the node with the id `u`. That is, all nodes
- * that have the node `u` as their source are returned.
- * 
- * If no node `u` exists in the graph this function throws an Error.
- *
- * @param {String} u a node id
- */
-Digraph.prototype.successors = function(u) {
-  this._strictGetNode(u);
-  return Object.keys(this._outEdges[u])
-               .map(function(v) { return this._nodes[v].id; }, this);
-};
-
-/*
- * Returns all predecessors of the node with the id `u`. That is, all nodes
- * that have the node `u` as their target are returned.
- * 
- * If no node `u` exists in the graph this function throws an Error.
- *
- * @param {String} u a node id
- */
-Digraph.prototype.predecessors = function(u) {
-  this._strictGetNode(u);
-  return Object.keys(this._inEdges[u])
-               .map(function(v) { return this._nodes[v].id; }, this);
-};
-
-/*
- * Returns all nodes that are adjacent to the node with the id `u`. In other
- * words, this function returns the set of all successors and predecessors of
- * node `u`.
- *
- * @param {String} u a node id
- */
-Digraph.prototype.neighbors = function(u) {
-  return Set.union([this.successors(u), this.predecessors(u)]).keys();
-};
-
-/*
- * Returns all nodes in the graph that have no in-edges.
- */
-Digraph.prototype.sources = function() {
-  var self = this;
-  return this._filterNodes(function(u) {
-    // This could have better space characteristics if we had an inDegree function.
-    return self.inEdges(u).length === 0;
-  });
-};
-
-/*
- * Returns all nodes in the graph that have no out-edges.
- */
-Digraph.prototype.sinks = function() {
-  var self = this;
-  return this._filterNodes(function(u) {
-    // This could have better space characteristics if we have an outDegree function.
-    return self.outEdges(u).length === 0;
-  });
-};
-
-/*
- * Returns the source node incident on the edge identified by the id `e`. If no
- * such edge exists in the graph this function throws an Error.
- *
- * @param {String} e an edge id
- */
-Digraph.prototype.source = function(e) {
-  return this._strictGetEdge(e).u;
-};
-
-/*
- * Returns the target node incident on the edge identified by the id `e`. If no
- * such edge exists in the graph this function throws an Error.
- *
- * @param {String} e an edge id
- */
-Digraph.prototype.target = function(e) {
-  return this._strictGetEdge(e).v;
-};
-
-/*
- * Returns an array of ids for all edges in the graph that have the node
- * `target` as their target. If the node `target` is not in the graph this
- * function raises an Error.
- *
- * Optionally a `source` node can also be specified. This causes the results
- * to be filtered such that only edges from `source` to `target` are included.
- * If the node `source` is specified but is not in the graph then this function
- * raises an Error.
- *
- * @param {String} target the target node id
- * @param {String} [source] an optional source node id
- */
-Digraph.prototype.inEdges = function(target, source) {
-  this._strictGetNode(target);
-  var results = Set.union(util.values(this._inEdges[target])).keys();
-  if (arguments.length > 1) {
-    this._strictGetNode(source);
-    results = results.filter(function(e) { return this.source(e) === source; }, this);
-  }
-  return results;
-};
-
-/*
- * Returns an array of ids for all edges in the graph that have the node
- * `source` as their source. If the node `source` is not in the graph this
- * function raises an Error.
- *
- * Optionally a `target` node may also be specified. This causes the results
- * to be filtered such that only edges from `source` to `target` are included.
- * If the node `target` is specified but is not in the graph then this function
- * raises an Error.
- *
- * @param {String} source the source node id
- * @param {String} [target] an optional target node id
- */
-Digraph.prototype.outEdges = function(source, target) {
-  this._strictGetNode(source);
-  var results = Set.union(util.values(this._outEdges[source])).keys();
-  if (arguments.length > 1) {
-    this._strictGetNode(target);
-    results = results.filter(function(e) { return this.target(e) === target; }, this);
-  }
-  return results;
-};
-
-/*
- * Returns an array of ids for all edges in the graph that have the `u` as
- * their source or their target. If the node `u` is not in the graph this
- * function raises an Error.
- *
- * Optionally a `v` node may also be specified. This causes the results to be
- * filtered such that only edges between `u` and `v` - in either direction -
- * are included. IF the node `v` is specified but not in the graph then this
- * function raises an Error.
- *
- * @param {String} u the node for which to find incident edges
- * @param {String} [v] option node that must be adjacent to `u`
- */
-Digraph.prototype.incidentEdges = function(u, v) {
-  if (arguments.length > 1) {
-    return Set.union([this.outEdges(u, v), this.outEdges(v, u)]).keys();
-  } else {
-    return Set.union([this.inEdges(u), this.outEdges(u)]).keys();
-  }
-};
-
-/*
- * Returns a string representation of this graph.
- */
-Digraph.prototype.toString = function() {
-  return "Digraph " + JSON.stringify(this, null, 2);
-};
-
-/*
- * Adds a new node with the id `u` to the graph and assigns it the value
- * `value`. If a node with the id is already a part of the graph this function
- * throws an Error.
- *
- * @param {String} u a node id
- * @param {Object} [value] an optional value to attach to the node
- */
-Digraph.prototype.addNode = function(u, value) {
-  u = BaseGraph.prototype.addNode.call(this, u, value);
-  this._inEdges[u] = {};
-  this._outEdges[u] = {};
-  return u;
-};
-
-/*
- * Removes a node from the graph that has the id `u`. Any edges incident on the
- * node are also removed. If the graph does not contain a node with the id this
- * function will throw an Error.
- *
- * @param {String} u a node id
- */
-Digraph.prototype.delNode = function(u) {
-  BaseGraph.prototype.delNode.call(this, u);
-  delete this._inEdges[u];
-  delete this._outEdges[u];
-};
-
-/*
- * Adds a new edge to the graph with the id `e` from a node with the id `source`
- * to a node with an id `target` and assigns it the value `value`. This graph
- * allows more than one edge from `source` to `target` as long as the id `e`
- * is unique in the set of edges. If `e` is `null` the graph will assign a
- * unique identifier to the edge.
- *
- * If `source` or `target` are not present in the graph this function will
- * throw an Error.
- *
- * @param {String} [e] an edge id
- * @param {String} source the source node id
- * @param {String} target the target node id
- * @param {Object} [value] an optional value to attach to the edge
- */
-Digraph.prototype.addEdge = function(e, source, target, value) {
-  return BaseGraph.prototype._addEdge.call(this, e, source, target, value,
-                                           this._inEdges, this._outEdges);
-};
-
-/*
- * Removes an edge in the graph with the id `e`. If no edge in the graph has
- * the id `e` this function will throw an Error.
- *
- * @param {String} e an edge id
- */
-Digraph.prototype.delEdge = function(e) {
-  BaseGraph.prototype._delEdge.call(this, e, this._inEdges, this._outEdges);
-};
-
-// Unlike BaseGraph.filterNodes, this helper just returns nodes that
-// satisfy a predicate.
-Digraph.prototype._filterNodes = function(pred) {
-  var filtered = [];
-  this.eachNode(function(u) {
-    if (pred(u)) {
-      filtered.push(u);
-    }
-  });
-  return filtered;
-};
-
-
-},{"./BaseGraph":29,"./util":49,"cp-data":5}],33:[function(require,module,exports){
-/*
- * This file is organized with in the following order:
- *
- * Exports
- * Graph constructors
- * Graph queries (e.g. nodes(), edges()
- * Graph mutators
- * Helper functions
- */
-
-var util = require("./util"),
-    BaseGraph = require("./BaseGraph"),
-/* jshint -W079 */
-    Set = require("cp-data").Set;
-/* jshint +W079 */
-
-module.exports = Graph;
-
-/*
- * Constructor to create a new undirected multi-graph.
- */
-function Graph() {
-  BaseGraph.call(this);
-
-  /*! Map of nodeId -> { otherNodeId -> Set of edge ids } */
-  this._incidentEdges = {};
-}
-
-Graph.prototype = new BaseGraph();
-Graph.prototype.constructor = Graph;
-
-/*
- * Always returns `false`.
- */
-Graph.prototype.isDirected = function() {
-  return false;
-};
-
-/*
- * Returns all nodes that are adjacent to the node with the id `u`.
- *
- * @param {String} u a node id
- */
-Graph.prototype.neighbors = function(u) {
-  this._strictGetNode(u);
-  return Object.keys(this._incidentEdges[u])
-               .map(function(v) { return this._nodes[v].id; }, this);
-};
-
-/*
- * Returns an array of ids for all edges in the graph that are incident on `u`.
- * If the node `u` is not in the graph this function raises an Error.
- *
- * Optionally a `v` node may also be specified. This causes the results to be
- * filtered such that only edges between `u` and `v` are included. If the node
- * `v` is specified but not in the graph then this function raises an Error.
- *
- * @param {String} u the node for which to find incident edges
- * @param {String} [v] option node that must be adjacent to `u`
- */
-Graph.prototype.incidentEdges = function(u, v) {
-  this._strictGetNode(u);
-  if (arguments.length > 1) {
-    this._strictGetNode(v);
-    return v in this._incidentEdges[u] ? this._incidentEdges[u][v].keys() : [];
-  } else {
-    return Set.union(util.values(this._incidentEdges[u])).keys();
-  }
-};
-
-/*
- * Returns a string representation of this graph.
- */
-Graph.prototype.toString = function() {
-  return "Graph " + JSON.stringify(this, null, 2);
-};
-
-/*
- * Adds a new node with the id `u` to the graph and assigns it the value
- * `value`. If a node with the id is already a part of the graph this function
- * throws an Error.
- *
- * @param {String} u a node id
- * @param {Object} [value] an optional value to attach to the node
- */
-Graph.prototype.addNode = function(u, value) {
-  u = BaseGraph.prototype.addNode.call(this, u, value);
-  this._incidentEdges[u] = {};
-  return u;
-};
-
-/*
- * Removes a node from the graph that has the id `u`. Any edges incident on the
- * node are also removed. If the graph does not contain a node with the id this
- * function will throw an Error.
- *
- * @param {String} u a node id
- */
-Graph.prototype.delNode = function(u) {
-  BaseGraph.prototype.delNode.call(this, u);
-  delete this._incidentEdges[u];
-};
-
-/*
- * Adds a new edge to the graph with the id `e` between a node with the id `u`
- * and a node with an id `v` and assigns it the value `value`. This graph
- * allows more than one edge between `u` and `v` as long as the id `e`
- * is unique in the set of edges. If `e` is `null` the graph will assign a
- * unique identifier to the edge.
- *
- * If `u` or `v` are not present in the graph this function will throw an
- * Error.
- *
- * @param {String} [e] an edge id
- * @param {String} u the node id of one of the adjacent nodes
- * @param {String} v the node id of the other adjacent node
- * @param {Object} [value] an optional value to attach to the edge
- */
-Graph.prototype.addEdge = function(e, u, v, value) {
-  return BaseGraph.prototype._addEdge.call(this, e, u, v, value,
-                                           this._incidentEdges, this._incidentEdges);
-};
-
-/*
- * Removes an edge in the graph with the id `e`. If no edge in the graph has
- * the id `e` this function will throw an Error.
- *
- * @param {String} e an edge id
- */
-Graph.prototype.delEdge = function(e) {
-  BaseGraph.prototype._delEdge.call(this, e, this._incidentEdges, this._incidentEdges);
-};
-
-
-},{"./BaseGraph":29,"./util":49,"cp-data":5}],34:[function(require,module,exports){
-/* jshint -W079 */
-var Set = require("cp-data").Set;
-/* jshint +W079 */
-
-module.exports = components;
-
-/**
- * Finds all [connected components][] in a graph and returns an array of these
- * components. Each component is itself an array that contains the ids of nodes
- * in the component.
- *
- * This function only works with undirected Graphs.
- *
- * [connected components]: http://en.wikipedia.org/wiki/Connected_component_(graph_theory)
- *
- * @param {Graph} g the graph to search for components
- */
-function components(g) {
-  var results = [];
-  var visited = new Set();
-
-  function dfs(v, component) {
-    if (!visited.has(v)) {
-      visited.add(v);
-      component.push(v);
-      g.neighbors(v).forEach(function(w) {
-        dfs(w, component);
-      });
-    }
-  }
-
-  g.nodes().forEach(function(v) {
-    var component = [];
-    dfs(v, component);
-    if (component.length > 0) {
-      results.push(component);
-    }
-  });
-
-  return results;
-}
-
-},{"cp-data":5}],35:[function(require,module,exports){
-var PriorityQueue = require("cp-data").PriorityQueue;
-
-module.exports = dijkstra;
-
-/**
- * This function is an implementation of [Dijkstra's algorithm][] which finds
- * the shortest path from **source** to all other nodes in **g**. This
- * function returns a map of `u -> { distance, predecessor }`. The distance
- * property holds the sum of the weights from **source** to `u` along the
- * shortest path or `Number.POSITIVE_INFINITY` if there is no path from
- * **source**. The predecessor property can be used to walk the individual
- * elements of the path from **source** to **u** in reverse order.
- *
- * This function takes an optional `weightFunc(e)` which returns the
- * weight of the edge `e`. If no weightFunc is supplied then each edge is
- * assumed to have a weight of 1. This function throws an Error if any of
- * the traversed edges have a negative edge weight.
- *
- * This function takes an optional `incidentFunc(u)` which returns the ids of
- * all edges incident to the node `u` for the purposes of shortest path
- * traversal. By default this function uses the `g.outEdges` for Digraphs and
- * `g.incidentEdges` for Graphs.
- *
- * This function takes `O((|E| + |V|) * log |V|)` time.
- *
- * [Dijkstra's algorithm]: http://en.wikipedia.org/wiki/Dijkstra%27s_algorithm
- *
- * @param {Graph} g the graph to search for shortest paths from **source**
- * @param {Object} source the source from which to start the search
- * @param {Function} [weightFunc] optional weight function
- * @param {Function} [incidentFunc] optional incident function
- */
-function dijkstra(g, source, weightFunc, incidentFunc) {
-  var results = {},
-      pq = new PriorityQueue();
-
-  function updateNeighbors(e) {
-    var incidentNodes = g.incidentNodes(e),
-        v = incidentNodes[0] !== u ? incidentNodes[0] : incidentNodes[1],
-        vEntry = results[v],
-        weight = weightFunc(e),
-        distance = uEntry.distance + weight;
-
-    if (weight < 0) {
-      throw new Error("dijkstra does not allow negative edge weights. Bad edge: " + e + " Weight: " + weight);
-    }
-
-    if (distance < vEntry.distance) {
-      vEntry.distance = distance;
-      vEntry.predecessor = u;
-      pq.decrease(v, distance);
-    }
-  }
-
-  weightFunc = weightFunc || function() { return 1; };
-  incidentFunc = incidentFunc || (g.isDirected()
-      ? function(u) { return g.outEdges(u); }
-      : function(u) { return g.incidentEdges(u); });
-
-  g.eachNode(function(u) {
-    var distance = u === source ? 0 : Number.POSITIVE_INFINITY;
-    results[u] = { distance: distance };
-    pq.add(u, distance);
-  });
-
-  var u, uEntry;
-  while (pq.size() > 0) {
-    u = pq.removeMin();
-    uEntry = results[u];
-    if (uEntry.distance === Number.POSITIVE_INFINITY) {
-      break;
-    }
-
-    incidentFunc(u).forEach(updateNeighbors);
-  }
-
-  return results;
-}
-
-},{"cp-data":5}],36:[function(require,module,exports){
-var dijkstra = require("./dijkstra");
-
-module.exports = dijkstraAll;
-
-/**
- * This function finds the shortest path from each node to every other
- * reachable node in the graph. It is similar to [alg.dijkstra][], but
- * instead of returning a single-source array, it returns a mapping of
- * of `source -> alg.dijksta(g, source, weightFunc, incidentFunc)`.
- *
- * This function takes an optional `weightFunc(e)` which returns the
- * weight of the edge `e`. If no weightFunc is supplied then each edge is
- * assumed to have a weight of 1. This function throws an Error if any of
- * the traversed edges have a negative edge weight.
- *
- * This function takes an optional `incidentFunc(u)` which returns the ids of
- * all edges incident to the node `u` for the purposes of shortest path
- * traversal. By default this function uses the `outEdges` function on the
- * supplied graph.
- *
- * This function takes `O(|V| * (|E| + |V|) * log |V|)` time.
- *
- * [alg.dijkstra]: dijkstra.js.html#dijkstra
- *
- * @param {Graph} g the graph to search for shortest paths from **source**
- * @param {Function} [weightFunc] optional weight function
- * @param {Function} [incidentFunc] optional incident function
- */
-function dijkstraAll(g, weightFunc, incidentFunc) {
-  var results = {};
-  g.eachNode(function(u) {
-    results[u] = dijkstra(g, u, weightFunc, incidentFunc);
-  });
-  return results;
-}
-
-},{"./dijkstra":35}],37:[function(require,module,exports){
-var tarjan = require("./tarjan");
-
-module.exports = findCycles;
-
-/*
- * Given a Digraph **g** this function returns all nodes that are part of a
- * cycle. Since there may be more than one cycle in a graph this function
- * returns an array of these cycles, where each cycle is itself represented
- * by an array of ids for each node involved in that cycle.
- *
- * [alg.isAcyclic][] is more efficient if you only need to determine whether
- * a graph has a cycle or not.
- *
- * [alg.isAcyclic]: isAcyclic.js.html#isAcyclic
- *
- * @param {Digraph} g the graph to search for cycles.
- */
-function findCycles(g) {
-  return tarjan(g).filter(function(cmpt) { return cmpt.length > 1; });
-}
-
-},{"./tarjan":43}],38:[function(require,module,exports){
-module.exports = floydWarshall;
-
-/**
- * This function is an implementation of the [Floyd-Warshall algorithm][],
- * which finds the shortest path from each node to every other reachable node
- * in the graph. It is similar to [alg.dijkstraAll][], but it handles negative
- * edge weights and is more efficient for some types of graphs. This function
- * returns a map of `source -> { target -> { distance, predecessor }`. The
- * distance property holds the sum of the weights from `source` to `target`
- * along the shortest path of `Number.POSITIVE_INFINITY` if there is no path
- * from `source`. The predecessor property can be used to walk the individual
- * elements of the path from `source` to `target` in reverse order.
- *
- * This function takes an optional `weightFunc(e)` which returns the
- * weight of the edge `e`. If no weightFunc is supplied then each edge is
- * assumed to have a weight of 1.
- *
- * This function takes an optional `incidentFunc(u)` which returns the ids of
- * all edges incident to the node `u` for the purposes of shortest path
- * traversal. By default this function uses the `outEdges` function on the
- * supplied graph.
- *
- * This algorithm takes O(|V|^3) time.
- *
- * [Floyd-Warshall algorithm]: https://en.wikipedia.org/wiki/Floyd-Warshall_algorithm
- * [alg.dijkstraAll]: dijkstraAll.js.html#dijkstraAll
- *
- * @param {Graph} g the graph to search for shortest paths from **source**
- * @param {Function} [weightFunc] optional weight function
- * @param {Function} [incidentFunc] optional incident function
- */
-function floydWarshall(g, weightFunc, incidentFunc) {
-  var results = {},
-      nodes = g.nodes();
-
-  weightFunc = weightFunc || function() { return 1; };
-  incidentFunc = incidentFunc || (g.isDirected()
-      ? function(u) { return g.outEdges(u); }
-      : function(u) { return g.incidentEdges(u); });
-
-  nodes.forEach(function(u) {
-    results[u] = {};
-    results[u][u] = { distance: 0 };
-    nodes.forEach(function(v) {
-      if (u !== v) {
-        results[u][v] = { distance: Number.POSITIVE_INFINITY };
-      }
-    });
-    incidentFunc(u).forEach(function(e) {
-      var incidentNodes = g.incidentNodes(e),
-          v = incidentNodes[0] !== u ? incidentNodes[0] : incidentNodes[1],
-          d = weightFunc(e);
-      if (d < results[u][v].distance) {
-        results[u][v] = { distance: d, predecessor: u };
-      }
-    });
-  });
-
-  nodes.forEach(function(k) {
-    var rowK = results[k];
-    nodes.forEach(function(i) {
-      var rowI = results[i];
-      nodes.forEach(function(j) {
-        var ik = rowI[k];
-        var kj = rowK[j];
-        var ij = rowI[j];
-        var altDistance = ik.distance + kj.distance;
-        if (altDistance < ij.distance) {
-          ij.distance = altDistance;
-          ij.predecessor = kj.predecessor;
-        }
-      });
-    });
-  });
-
-  return results;
-}
-
-},{}],39:[function(require,module,exports){
-var topsort = require("./topsort");
-
-module.exports = isAcyclic;
-
-/*
- * Given a Digraph **g** this function returns `true` if the graph has no
- * cycles and returns `false` if it does. This algorithm returns as soon as it
- * detects the first cycle.
- *
- * Use [alg.findCycles][] if you need the actual list of cycles in a graph.
- *
- * [alg.findCycles]: findCycles.js.html#findCycles
- *
- * @param {Digraph} g the graph to test for cycles
- */
-function isAcyclic(g) {
-  try {
-    topsort(g);
-  } catch (e) {
-    if (e instanceof topsort.CycleException) return false;
-    throw e;
-  }
-  return true;
-}
-
-},{"./topsort":44}],40:[function(require,module,exports){
-/* jshint -W079 */
-var Set = require("cp-data").Set;
-/* jshint +W079 */
-
-module.exports = postorder;
-
-// Postorder traversal of g, calling f for each visited node. Assumes the graph
-// is a tree.
-function postorder(g, root, f) {
-  var visited = new Set();
-  if (g.isDirected()) {
-    throw new Error("This function only works for undirected graphs");
-  }
-  function dfs(u, prev) {
-    if (visited.has(u)) {
-      throw new Error("The input graph is not a tree: " + g);
-    }
-    visited.add(u);
-    g.neighbors(u).forEach(function(v) {
-      if (v !== prev) dfs(v, u);
-    });
-    f(u);
-  }
-  dfs(root);
-}
-
-},{"cp-data":5}],41:[function(require,module,exports){
-/* jshint -W079 */
-var Set = require("cp-data").Set;
-/* jshint +W079 */
-
-module.exports = preorder;
-
-// Preorder traversal of g, calling f for each visited node. Assumes the graph
-// is a tree.
-function preorder(g, root, f) {
-  var visited = new Set();
-  if (g.isDirected()) {
-    throw new Error("This function only works for undirected graphs");
-  }
-  function dfs(u, prev) {
-    if (visited.has(u)) {
-      throw new Error("The input graph is not a tree: " + g);
-    }
-    visited.add(u);
-    f(u);
-    g.neighbors(u).forEach(function(v) {
-      if (v !== prev) dfs(v, u);
-    });
-  }
-  dfs(root);
-}
-
-},{"cp-data":5}],42:[function(require,module,exports){
-var Graph = require("../Graph"),
-    PriorityQueue = require("cp-data").PriorityQueue;
-
-module.exports = prim;
-
-/**
- * [Prim's algorithm][] takes a connected undirected graph and generates a
- * [minimum spanning tree][]. This function returns the minimum spanning
- * tree as an undirected graph. This algorithm is derived from the description
- * in "Introduction to Algorithms", Third Edition, Cormen, et al., Pg 634.
- *
- * This function takes a `weightFunc(e)` which returns the weight of the edge
- * `e`. It throws an Error if the graph is not connected.
- *
- * This function takes `O(|E| log |V|)` time.
- *
- * [Prim's algorithm]: https://en.wikipedia.org/wiki/Prim's_algorithm
- * [minimum spanning tree]: https://en.wikipedia.org/wiki/Minimum_spanning_tree
- *
- * @param {Graph} g the graph used to generate the minimum spanning tree
- * @param {Function} weightFunc the weight function to use
- */
-function prim(g, weightFunc) {
-  var result = new Graph(),
-      parents = {},
-      pq = new PriorityQueue(),
-      u;
-
-  function updateNeighbors(e) {
-    var incidentNodes = g.incidentNodes(e),
-        v = incidentNodes[0] !== u ? incidentNodes[0] : incidentNodes[1],
-        pri = pq.priority(v);
-    if (pri !== undefined) {
-      var edgeWeight = weightFunc(e);
-      if (edgeWeight < pri) {
-        parents[v] = u;
-        pq.decrease(v, edgeWeight);
-      }
-    }
-  }
-
-  if (g.order() === 0) {
-    return result;
-  }
-
-  g.eachNode(function(u) {
-    pq.add(u, Number.POSITIVE_INFINITY);
-    result.addNode(u);
-  });
-
-  // Start from an arbitrary node
-  pq.decrease(g.nodes()[0], 0);
-
-  var init = false;
-  while (pq.size() > 0) {
-    u = pq.removeMin();
-    if (u in parents) {
-      result.addEdge(null, u, parents[u]);
-    } else if (init) {
-      throw new Error("Input graph is not connected: " + g);
-    } else {
-      init = true;
-    }
-
-    g.incidentEdges(u).forEach(updateNeighbors);
-  }
-
-  return result;
-}
-
-},{"../Graph":33,"cp-data":5}],43:[function(require,module,exports){
-module.exports = tarjan;
-
-/**
- * This function is an implementation of [Tarjan's algorithm][] which finds
- * all [strongly connected components][] in the directed graph **g**. Each
- * strongly connected component is composed of nodes that can reach all other
- * nodes in the component via directed edges. A strongly connected component
- * can consist of a single node if that node cannot both reach and be reached
- * by any other specific node in the graph. Components of more than one node
- * are guaranteed to have at least one cycle.
- *
- * This function returns an array of components. Each component is itself an
- * array that contains the ids of all nodes in the component.
- *
- * [Tarjan's algorithm]: http://en.wikipedia.org/wiki/Tarjan's_strongly_connected_components_algorithm
- * [strongly connected components]: http://en.wikipedia.org/wiki/Strongly_connected_component
- *
- * @param {Digraph} g the graph to search for strongly connected components
- */
-function tarjan(g) {
-  if (!g.isDirected()) {
-    throw new Error("tarjan can only be applied to a directed graph. Bad input: " + g);
-  }
-
-  var index = 0,
-      stack = [],
-      visited = {}, // node id -> { onStack, lowlink, index }
-      results = [];
-
-  function dfs(u) {
-    var entry = visited[u] = {
-      onStack: true,
-      lowlink: index,
-      index: index++
-    };
-    stack.push(u);
-
-    g.successors(u).forEach(function(v) {
-      if (!(v in visited)) {
-        dfs(v);
-        entry.lowlink = Math.min(entry.lowlink, visited[v].lowlink);
-      } else if (visited[v].onStack) {
-        entry.lowlink = Math.min(entry.lowlink, visited[v].index);
-      }
-    });
-
-    if (entry.lowlink === entry.index) {
-      var cmpt = [],
-          v;
-      do {
-        v = stack.pop();
-        visited[v].onStack = false;
-        cmpt.push(v);
-      } while (u !== v);
-      results.push(cmpt);
-    }
-  }
-
-  g.nodes().forEach(function(u) {
-    if (!(u in visited)) {
-      dfs(u);
-    }
-  });
-
-  return results;
-}
-
-},{}],44:[function(require,module,exports){
-module.exports = topsort;
-topsort.CycleException = CycleException;
-
-/*
- * Given a graph **g**, this function returns an ordered list of nodes such
- * that for each edge `u -> v`, `u` appears before `v` in the list. If the
- * graph has a cycle it is impossible to generate such a list and
- * **CycleException** is thrown.
- *
- * See [topological sorting](https://en.wikipedia.org/wiki/Topological_sorting)
- * for more details about how this algorithm works.
- *
- * @param {Digraph} g the graph to sort
- */
-function topsort(g) {
-  if (!g.isDirected()) {
-    throw new Error("topsort can only be applied to a directed graph. Bad input: " + g);
-  }
-
-  var visited = {};
-  var stack = {};
-  var results = [];
-
-  function visit(node) {
-    if (node in stack) {
-      throw new CycleException();
-    }
-
-    if (!(node in visited)) {
-      stack[node] = true;
-      visited[node] = true;
-      g.predecessors(node).forEach(function(pred) {
-        visit(pred);
-      });
-      delete stack[node];
-      results.push(node);
-    }
-  }
-
-  var sinks = g.sinks();
-  if (g.order() !== 0 && sinks.length === 0) {
-    throw new CycleException();
-  }
-
-  g.sinks().forEach(function(sink) {
-    visit(sink);
-  });
-
-  return results;
-}
-
-function CycleException() {}
-
-CycleException.prototype.toString = function() {
-  return "Graph has at least one cycle";
-};
-
-},{}],45:[function(require,module,exports){
-// This file provides a helper function that mixes-in Dot behavior to an
-// existing graph prototype.
-
-/* jshint -W079 */
-var Set = require("cp-data").Set;
-/* jshint +W079 */
-
-module.exports = compoundify;
-
-// Extends the given SuperConstructor with the ability for nodes to contain
-// other nodes. A special node id `null` is used to indicate the root graph.
-function compoundify(SuperConstructor) {
-  function Constructor() {
-    SuperConstructor.call(this);
-
-    // Map of object id -> parent id (or null for root graph)
-    this._parents = {};
-
-    // Map of id (or null) -> children set
-    this._children = {};
-    this._children[null] = new Set();
-  }
-
-  Constructor.prototype = new SuperConstructor();
-  Constructor.prototype.constructor = Constructor;
-
-  Constructor.prototype.parent = function(u, parent) {
-    this._strictGetNode(u);
-
-    if (arguments.length < 2) {
-      return this._parents[u];
-    }
-
-    if (u === parent) {
-      throw new Error("Cannot make " + u + " a parent of itself");
-    }
-    if (parent !== null) {
-      this._strictGetNode(parent);
-    }
-
-    this._children[this._parents[u]].remove(u);
-    this._parents[u] = parent;
-    this._children[parent].add(u);
-  };
-
-  Constructor.prototype.children = function(u) {
-    if (u !== null) {
-      this._strictGetNode(u);
-    }
-    return this._children[u].keys();
-  };
-
-  Constructor.prototype.addNode = function(u, value) {
-    u = SuperConstructor.prototype.addNode.call(this, u, value);
-    this._parents[u] = null;
-    this._children[u] = new Set();
-    this._children[null].add(u);
-    return u;
-  };
-
-  Constructor.prototype.delNode = function(u) {
-    // Promote all children to the parent of the subgraph
-    var parent = this.parent(u);
-    this._children[u].keys().forEach(function(child) {
-      this.parent(child, parent);
-    }, this);
-
-    this._children[parent].remove(u);
-    delete this._parents[u];
-    delete this._children[u];
-
-    return SuperConstructor.prototype.delNode.call(this, u);
-  };
-
-  Constructor.prototype.copy = function() {
-    var copy = SuperConstructor.prototype.copy.call(this);
-    this.nodes().forEach(function(u) {
-      copy.parent(u, this.parent(u));
-    }, this);
-    return copy;
-  };
-
-  Constructor.prototype.filterNodes = function(filter) {
-    var self = this,
-        copy = SuperConstructor.prototype.filterNodes.call(this, filter);
-
-    var parents = {};
-    function findParent(u) {
-      var parent = self.parent(u);
-      if (parent === null || copy.hasNode(parent)) {
-        parents[u] = parent;
-        return parent;
-      } else if (parent in parents) {
-        return parents[parent];
-      } else {
-        return findParent(parent);
-      }
-    }
-
-    copy.eachNode(function(u) { copy.parent(u, findParent(u)); });
-
-    return copy;
-  };
-
-  return Constructor;
-}
-
-},{"cp-data":5}],46:[function(require,module,exports){
-var Graph = require("../Graph"),
-    Digraph = require("../Digraph"),
-    CGraph = require("../CGraph"),
-    CDigraph = require("../CDigraph");
-
-exports.decode = function(nodes, edges, Ctor) {
-  Ctor = Ctor || Digraph;
-
-  if (typeOf(nodes) !== "Array") {
-    throw new Error("nodes is not an Array");
-  }
-
-  if (typeOf(edges) !== "Array") {
-    throw new Error("edges is not an Array");
-  }
-
-  if (typeof Ctor === "string") {
-    switch(Ctor) {
-      case "graph": Ctor = Graph; break;
-      case "digraph": Ctor = Digraph; break;
-      case "cgraph": Ctor = CGraph; break;
-      case "cdigraph": Ctor = CDigraph; break;
-      default: throw new Error("Unrecognized graph type: " + Ctor);
-    }
-  }
-
-  var graph = new Ctor();
-
-  nodes.forEach(function(u) {
-    graph.addNode(u.id, u.value);
-  });
-
-  // If the graph is compound, set up children...
-  if (graph.parent) {
-    nodes.forEach(function(u) {
-      if (u.children) {
-        u.children.forEach(function(v) {
-          graph.parent(v, u.id);
-        });
-      }
-    });
-  }
-
-  edges.forEach(function(e) {
-    graph.addEdge(e.id, e.u, e.v, e.value);
-  });
-
-  return graph;
-};
-
-exports.encode = function(graph) {
-  var nodes = [];
-  var edges = [];
-
-  graph.eachNode(function(u, value) {
-    var node = {id: u, value: value};
-    if (graph.children) {
-      var children = graph.children(u);
-      if (children.length) {
-        node.children = children;
-      }
-    }
-    nodes.push(node);
-  });
-
-  graph.eachEdge(function(e, u, v, value) {
-    edges.push({id: e, u: u, v: v, value: value});
-  });
-
-  var type;
-  if (graph instanceof CDigraph) {
-    type = "cdigraph";
-  } else if (graph instanceof CGraph) {
-    type = "cgraph";
-  } else if (graph instanceof Digraph) {
-    type = "digraph";
-  } else if (graph instanceof Graph) {
-    type = "graph";
-  } else {
-    throw new Error("Couldn't determine type of graph: " + graph);
-  }
-
-  return { nodes: nodes, edges: edges, type: type };
-};
-
-function typeOf(obj) {
-  return Object.prototype.toString.call(obj).slice(8, -1);
-}
-
-},{"../CDigraph":30,"../CGraph":31,"../Digraph":32,"../Graph":33}],47:[function(require,module,exports){
-/* jshint -W079 */
-var Set = require("cp-data").Set;
-/* jshint +W079 */
-
-exports.all = function() {
-  return function() { return true; };
-};
-
-exports.nodesFromList = function(nodes) {
-  var set = new Set(nodes);
-  return function(u) {
-    return set.has(u);
-  };
-};
-
-},{"cp-data":5}],48:[function(require,module,exports){
-var Graph = require("./Graph"),
-    Digraph = require("./Digraph");
-
-// Side-effect based changes are lousy, but node doesn't seem to resolve the
-// requires cycle.
-
-/**
- * Returns a new directed graph using the nodes and edges from this graph. The
- * new graph will have the same nodes, but will have twice the number of edges:
- * each edge is split into two edges with opposite directions. Edge ids,
- * consequently, are not preserved by this transformation.
- */
-Graph.prototype.toDigraph =
-Graph.prototype.asDirected = function() {
-  var g = new Digraph();
-  this.eachNode(function(u, value) { g.addNode(u, value); });
-  this.eachEdge(function(e, u, v, value) {
-    g.addEdge(null, u, v, value);
-    g.addEdge(null, v, u, value);
-  });
-  return g;
-};
-
-/**
- * Returns a new undirected graph using the nodes and edges from this graph.
- * The new graph will have the same nodes, but the edges will be made
- * undirected. Edge ids are preserved in this transformation.
- */
-Digraph.prototype.toGraph =
-Digraph.prototype.asUndirected = function() {
-  var g = new Graph();
-  this.eachNode(function(u, value) { g.addNode(u, value); });
-  this.eachEdge(function(e, u, v, value) {
-    g.addEdge(e, u, v, value);
-  });
-  return g;
-};
-
-},{"./Digraph":32,"./Graph":33}],49:[function(require,module,exports){
-// Returns an array of all values for properties of **o**.
-exports.values = function(o) {
-  var ks = Object.keys(o),
-      len = ks.length,
-      result = new Array(len),
-      i;
-  for (i = 0; i < len; ++i) {
-    result[i] = o[ks[i]];
-  }
-  return result;
-};
-
-},{}],50:[function(require,module,exports){
-module.exports = '0.7.4';
-
-},{}]},{},[1])
-;
\ No newline at end of file
diff --git a/public/js/lib/d3/dagre-d3.min.js b/public/js/lib/d3/dagre-d3.min.js
deleted file mode 100644
index 606fdce..0000000
--- a/public/js/lib/d3/dagre-d3.min.js
+++ /dev/null
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++this._nextId;while(this.hasNode(a))}else if(this.hasNode(a))throw new Error("Graph already has node '"+a+"'");return this._nodes[a]={id:a,value:b},a},e.prototype.delNode=function(a){this._strictGetNode(a),this.incidentEdges(a).forEach(function(a){this.delEdge(a)},this),delete this._nodes[a]},e.prototype._addEdge=function(a,b,c,d,e,g){this._strictGetNode(b),this._strictGetNode(c);if(a===undefined||a===null){do a="_"+ ++this._nextId;while(this.hasEdge(a))}else if(this.hasEdge(a))throw new Error("Graph already has edge '"+a+"'");return this._edges[a]={id:a,u:b,v:c,value:d},f(e[c],b,a),f(g[b],c,a),a},e.prototype._delEdge=function(a,b,c){var d=this._strictGetEdge(a);g(b[d.v],d.u,a),g(c[d.u],d.v,a),delete this._edges[a]},e.prototype.copy=function(){var a=new this.constructor;return a.graph(this.graph()),this.eachNode(function(b,c){a.addNode(b,c)}),this.eachEdge(function(b,c,d,e){a.addEdge(b,c,d,e)}),a._nextId=this._nextId,a},e.prototype.filterNodes=function(a){var b=new this.constructor;return b.graph(this.graph()),this.eachNode(function(c,d){a(c)&&b.addNode(c,d)}),this.eachEdge(function(a,c,d,e){b.hasNode(c)&&b.hasNode(d)&&b.addEdge(a,c,d,e)}),b},e.prototype._strictGetNode=function(a){var b=this._nodes[a];if(b===undefined)throw new Error("Node '"+a+"' is not in graph");return b},e.prototype._strictGetEdge=function(a){var b=this._edges[a];if(b===undefined)throw new Error("Edge '"+a+"' is not in graph");return b}},{"cp-data":5}],30:[function(a,b,c){var d=a("./Digraph"),e=a("./compoundify"),f=e(d);b.exports=f,f.fromDigraph=function(a){var b=new f,c=a.graph();return c!==undefined&&b.graph(c),a.eachNode(function(a,c){c===undefined?b.addNode(a):b.addNode(a,c)}),a.eachEdge(function(a,c,d,e){e===undefined?b.addEdge(null,c,d):b.addEdge(null,c,d,e)}),b},f.prototype.toString=function(){return"CDigraph "+JSON.stringify(this,null,2)}},{"./Digraph":32,"./compoundify":45}],31:[function(a,b,c){var d=a("./Graph"),e=a("./compoundify"),f=e(d);b.exports=f,f.fromGraph=function(a){var b=new f,c=a.graph();return c!==undefined&&b.graph(c),a.eachNode(function(a,c){c===undefined?b.addNode(a):b.addNode(a,c)}),a.eachEdge(function(a,c,d,e){e===undefined?b.addEdge(null,c,d):b.addEdge(null,c,d,e)}),b},f.prototype.toString=function(){return"CGraph "+JSON.stringify(this,null,2)}},{"./Graph":33,"./compoundify":45}],32:[function(a,b,c){function g(){e.call(this),this._inEdges={},this._outEdges={}}var d=a("./util"),e=a("./BaseGraph"),f=a("cp-data").Set;b.exports=g,g.prototype=new e,g.prototype.constructor=g,g.prototype.isDirected=function(){return!0},g.prototype.successors=function(a){return this._strictGetNode(a),Object.keys(this._outEdges[a]).map(function(a){return this._nodes[a].id},this)},g.prototype.predecessors=function(a){return this._strictGetNode(a),Object.keys(this._inEdges[a]).map(function(a){return this._nodes[a].id},this)},g.prototype.neighbors=function(a){return f.union([this.successors(a),this.predecessors(a)]).keys()},g.prototype.sources=function(){var a=this;return this._filterNodes(function(b){return a.inEdges(b).length===0})},g.prototype.sinks=function(){var a=this;return this._filterNodes(function(b){return a.outEdges(b).length===0})},g.prototype.source=function(a){return this._strictGetEdge(a).u},g.prototype.target=function(a){return this._strictGetEdge(a).v},g.prototype.inEdges=function(a,b){this._strictGetNode(a);var c=f.union(d.values(this._inEdges[a])).keys();return arguments.length>1&&(this._strictGetNode(b),c=c.filter(function(a){return this.source(a)===b},this)),c},g.prototype.outEdges=function(a,b){this._strictGetNode(a);var c=f.union(d.values(this._outEdges[a])).keys();return arguments.length>1&&(this._strictGetNode(b),c=c.filter(function(a){return this.target(a)===b},this)),c},g.prototype.incidentEdges=function(a,b){return arguments.length>1?f.union([this.outEdges(a,b),this.outEdges(b,a)]).keys():f.union([this.inEdges(a),this.outEdges(a)]).keys()},g.prototype.toString=function(){return"Digraph "+JSON.stringify(this,null,2)},g.prototype.addNode=function(a,b){return a=e.prototype.addNode.call(this,a,b),this._inEdges[a]={},this._outEdges[a]={},a},g.prototype.delNode=function(a){e.prototype.delNode.call(this,a),delete this._inEdges[a],delete this._outEdges[a]},g.prototype.addEdge=function(a,b,c,d){return e.prototype._addEdge.call(this,a,b,c,d,this._inEdges,this._outEdges)},g.prototype.delEdge=function(a){e.prototype._delEdge.call(this,a,this._inEdges,this._outEdges)},g.prototype._filterNodes=function(a){var b=[];return this.eachNode(function(c){a(c)&&b.push(c)}),b}},{"./BaseGraph":29,"./util":49,"cp-data":5}],33:[function(a,b,c){function g(){e.call(this),this._incidentEdges={}}var d=a("./util"),e=a("./BaseGraph"),f=a("cp-data").Set;b.exports=g,g.prototype=new e,g.prototype.constructor=g,g.prototype.isDirected=function(){return!1},g.prototype.neighbors=function(a){return this._strictGetNode(a),Object.keys(this._incidentEdges[a]).map(function(a){return this._nodes[a].id},this)},g.prototype.incidentEdges=function(a,b){return this._strictGetNode(a),arguments.length>1?(this._strictGetNode(b),b in this._incidentEdges[a]?this._incidentEdges[a][b].keys():[]):f.union(d.values(this._incidentEdges[a])).keys()},g.prototype.toString=function(){return"Graph "+JSON.stringify(this,null,2)},g.prototype.addNode=function(a,b){return a=e.prototype.addNode.call(this,a,b),this._incidentEdges[a]={},a},g.prototype.delNode=function(a){e.prototype.delNode.call(this,a),delete this._incidentEdges[a]},g.prototype.addEdge=function(a,b,c,d){return e.prototype._addEdge.call(this,a,b,c,d,this._incidentEdges,this._incidentEdges)},g.prototype.delEdge=function(a){e.prototype._delEdge.call(this,a,this._incidentEdges,this._incidentEdges)}},{"./BaseGraph":29,"./util":49,"cp-data":5}],34:[function(a,b,c){function e(a){function e(b,d){c.has(b)||(c.add(b),d.push(b),a.neighbors(b).forEach(function(a){e(a,d)}))}var b=[],c=new d;return a.nodes().forEach(function(a){var c=[];e(a,c),c.length>0&&b.push(c)}),b}var d=a("cp-data").Set;b.exports=e},{"cp-data":5}],35:[function(a,b,c){function e(a,b,c,e){function h(b){var d=a.incidentNodes(b),e=d[0]!==i?d[0]:d[1],h=f[e],k=c(b),l=j.distance+k;if(k<0)throw new Error("dijkstra does not allow negative edge weights. Bad edge: "+b+" Weight: "+k);l<h.distance&&(h.distance=l,h.predecessor=i,g.decrease(e,l))}var f={},g=new d;c=c||function(){return 1},e=e||(a.isDirected()?function(b){return a.outEdges(b)}:function(b){return a.incidentEdges(b)}),a.eachNode(function(a){var c=a===b?0:Number.POSITIVE_INFINITY;f[a]={distance:c},g.add(a,c)});var i,j;while(g.size()>0){i=g.removeMin(),j=f[i];if(j.distance===Number.POSITIVE_INFINITY)break;e(i).forEach(h)}return f}var d=a("cp-data").PriorityQueue;b.exports=e},{"cp-data":5}],36:[function(a,b,c){function e(a,b,c){var e={};return a.eachNode(function(f){e[f]=d(a,f,b,c)}),e}var d=a("./dijkstra");b.exports=e},{"./dijkstra":35}],37:[function(a,b,c){function e(a){return d(a).filter(function(a){return a.length>1})}var d=a("./tarjan");b.exports=e},{"./tarjan":43}],38:[function(a,b,c){function d(a,b,c){var d={},e=a.nodes();return b=b||function(){return 1},c=c||(a.isDirected()?function(b){return a.outEdges(b)}:function(b){return a.incidentEdges(b)}),e.forEach(function(f){d[f]={},d[f][f]={distance:0},e.forEach(function(a){f!==a&&(d[f][a]={distance:Number.POSITIVE_INFINITY})}),c(f).forEach(function(c){var e=a.incidentNodes(c),h=e[0]!==f?e[0]:e[1],i=b(c);i<d[f][h].distance&&(d[f][h]={distance:i,predecessor:f})})}),e.forEach(function(a){var b=d[a];e.forEach(function(c){var f=d[c];e.forEach(function(c){var d=f[a],e=b[c],g=f[c],h=d.distance+e.distance;h<g.distance&&(g.distance=h,g.predecessor=e.predecessor)})})}),d}b.exports=d},{}],39:[function(a,b,c){function e(a){try{d(a)}catch(b){if(b instanceof d.CycleException)return!1;throw b}return!0}var d=a("./topsort");b.exports=e},{"./topsort":44}],40:[function(a,b,c){function e(a,b,c){function f(b,d){if(e.has(b))throw new Error("The input graph is not a tree: "+a);e.add(b),a.neighbors(b).forEach(function(a){a!==d&&f(a,b)}),c(b)}var e=new d;if(a.isDirected())throw new Error("This function only works for undirected graphs");f(b)}var d=a("cp-data").Set;b.exports=e},{"cp-data":5}],41:[function(a,b,c){function e(a,b,c){function f(b,d){if(e.has(b))throw new Error("The input graph is not a tree: "+a);e.add(b),c(b),a.neighbors(b).forEach(function(a){a!==d&&f(a,b)})}var e=new d;if(a.isDirected())throw new Error("This function only works for undirected graphs");f(b)}var d=a("cp-data").Set;b.exports=e},{"cp-data":5}],42:[function(a,b,c){function f(a,b){function i(c){var d=a.incidentNodes(c),e=d[0]!==h?d[0]:d[1],i=g.priority(e);if(i!==undefined){var j=b(c);j<i&&(f[e]=h,g.decrease(e,j))}}var c=new d,f={},g=new e,h;if(a.order()===0)return c;a.eachNode(function(a){g.add(a,Number.POSITIVE_INFINITY),c.addNode(a)}),g.decrease(a.nodes()[0],0);var j=!1;while(g.size()>0){h=g.removeMin();if(h in f)c.addEdge(null,h,f[h]);else{if(j)throw new Error("Input graph is not connected: "+a);j=!0}a.incidentEdges(h).forEach(i)}return c}var d=a("../Graph"),e=a("cp-data").PriorityQueue;b.exports=f},{"../Graph":33,"cp-data":5}],43:[function(a,b,c){function d(a){function f(h){var i=d[h]={onStack:!0,lowlink:b,index:b++};c.push(h),a.successors(h).forEach(function(a){a in d?d[a].onStack&&(i.lowlink=Math.min(i.lowlink,d[a].index)):(f(a),i.lowlink=Math.min(i.lowlink,d[a].lowlink))});if(i.lowlink===i.index){var j=[],k;do k=c.pop(),d[k].onStack=!1,j.push(k);while(h!==k);e.push(j)}}if(!a.isDirected())throw new Error("tarjan can only be applied to a directed graph. Bad input: "+a);var b=0,c=[],d={},e=[];return a.nodes().forEach(function(a){a in d||f(a)}),e}b.exports=d},{}],44:[function(a,b,c){function d(a){function f(g){if(g in c)throw new e;g in b||(c[g]=!0,b[g]=!0,a.predecessors(g).forEach(function(a){f(a)}),delete c[g],d.push(g))}if(!a.isDirected())throw new Error("topsort can only be applied to a directed graph. Bad input: "+a);var b={},c={},d=[],g=a.sinks();if(a.order()!==0&&g.length===0)throw new e;return a.sinks().forEach(function(a){f(a)}),d}function e(){}b.exports=d,d.CycleException=e,e.prototype.toString=function(){return"Graph has at least one cycle"}},{}],45:[function(a,b,c){function e(a){function b(){a.call(this),this._parents={},this._children={},this._children[null]=new d}return b.prototype=new a,b.prototype.constructor=b,b.prototype.parent=function(a,b){this._strictGetNode(a);if(arguments.length<2)return this._parents[a];if(a===b)throw new Error("Cannot make "+a+" a parent of itself");b!==null&&this._strictGetNode(b),this._children[this._parents[a]].remove(a),this._parents[a]=b,this._children[b].add(a)},b.prototype.children=function(a){return a!==null&&this._strictGetNode(a),this._children[a].keys()},b.prototype.addNode=function(b,c){return b=a.prototype.addNode.call(this,b,c),this._parents[b]=null,this._children[b]=new d,this._children[null].add(b),b},b.prototype.delNode=function(b){var c=this.parent(b);return this._children[b].keys().forEach(function(a){this.parent(a,c)},this),this._children[c].remove(b),delete this._parents[b],delete this._children[b],a.prototype.delNode.call(this,b)},b.prototype.copy=function(){var b=a.prototype.copy.call(this);return this.nodes().forEach(function(a){b.parent(a,this.parent(a))},this),b},b.prototype.filterNodes=function(b){function f(a){var b=c.parent(a);return b===null||d.hasNode(b)?(e[a]=b,b):b in e?e[b]:f(b)}var c=this,d=a.prototype.filterNodes.call(this,b),e={};return d.eachNode(function(a){d.parent(a,f(a))}),d},b}var d=a("cp-data").Set;b.exports=e},{"cp-data":5}],46:[function(a,b,c){function h(a){return Object.prototype.toString.call(a).slice(8,-1)}var d=a("../Graph"),e=a("../Digraph"),f=a("../CGraph"),g=a("../CDigraph");c.decode=function(a,b,c){c=c||e;if(h(a)!=="Array")throw new Error("nodes is not an Array");if(h(b)!=="Array")throw new Error("edges is not an Array");if(typeof c=="string")switch(c){case"graph":c=d;break;case"digraph":c=e;break;case"cgraph":c=f;break;case"cdigraph":c=g;break;default:throw new Error("Unrecognized graph type: "+c)}var i=new c;return a.forEach(function(a){i.addNode(a.id,a.value)}),i.parent&&a.forEach(function(a){a.children&&a.children.forEach(function(b){i.parent(b,a.id)})}),b.forEach(function(a){i.addEdge(a.id,a.u,a.v,a.value)}),i},c.encode=function(a){var b=[],c=[];a.eachNode(function(c,d){var e={id:c,value:d};if(a.children){var f=a.children(c);f.length&&(e.children=f)}b.push(e)}),a.eachEdge(function(a,b,d,e){c.push({id:a,u:b,v:d,value:e})});var h;if(a instanceof g)h="cdigraph";else if(a instanceof f)h="cgraph";else if(a instanceof e)h="digraph";else if(a instanceof d)h="graph";else throw new Error("Couldn't determine type of graph: "+a);return{nodes:b,edges:c,type:h}}},{"../CDigraph":30,"../CGraph":31,"../Digraph":32,"../Graph":33}],47:[function(a,b,c){var d=a("cp-data").Set;c.all=function(){return function(){return!0}},c.nodesFromList=function(a){var b=new d(a);return function(a){return b.has(a)}}},{"cp-data":5}],48:[function(a,b,c){var d=a("./Graph"),e=a("./Digraph");d.prototype.toDigraph=d.prototype.asDirected=function(){var a=new e;return this.eachNode(function(b,c){a.addNode(b,c)}),this.eachEdge(function(b,c,d,e){a.addEdge(null,c,d,e),a.addEdge(null,d,c,e)}),a},e.prototype.toGraph=e.prototype.asUndirected=function(){var a=new d;return this.eachNode(function(b,c){a.addNode(b,c)}),this.eachEdge(function(b,c,d,e){a.addEdge(b,c,d,e)}),a}},{"./Digraph":32,"./Graph":33}],49:[function(a,b,c){c.values=function(a){var b=Object.keys(a),c=b.length,d=new Array(c),e;for(e=0;e<c;++e)d[e]=a[b[e]];return d}},{}],50:[function(a,b,c){b.exports="0.7.4"},{}]},{},[1]);
\ No newline at end of file
diff --git a/public/js/runner/matchInfo.html b/public/js/runner/matchInfo.html
index 2c5e047..7b20a7e 100644
--- a/public/js/runner/matchInfo.html
+++ b/public/js/runner/matchInfo.html
@@ -8,8 +8,8 @@
   <script src="../lib/jasmine-2.1.1/jasmine.js"></script>
   <script src="../lib/jasmine-2.1.1/jasmine-html.js"></script>
   <script src="../lib/jasmine-2.1.1/boot.js"></script>
-  <script src="../lib/d3/d3.js"></script>
-  <script src="../lib/d3/dagre-d3.js"></script>
+  <script src="../lib/dagre/dagre.min.js"></script>
+  <script src="../src/menu.js"></script>
   <script src="../src/matchInfo.js"></script>
   <script src="../spec/matchInfoSpec.js"></script>
 </head>
diff --git a/public/js/spec/matchInfoSpec.js b/public/js/spec/matchInfoSpec.js
index c25a0c9..b228413 100644
--- a/public/js/spec/matchInfoSpec.js
+++ b/public/js/spec/matchInfoSpec.js
@@ -237,9 +237,6 @@
     var tree = info.getTree();
     expect(tree).toBeTruthy();
     expect(tree.nodes()).toEqual(49);
-
-    console.log(tree.element());
-
   });
 });
 
@@ -292,7 +289,7 @@
   });
 });
 
-xdescribe('KorAP.MatchTree', function () {
+describe('KorAP.MatchTree', function () {
   it('should be rendered', function () {
     var info = KorAP.MatchInfo.create(match, available);
 
@@ -302,7 +299,34 @@
     };
 
     var tree = info.getTree();
-    tree.element();
+
+    var e = tree.element();
+    expect(e.nodeName).toEqual('svg');
+    expect(e.getElementsByTagName('g').length).toEqual(48);
+  });
+});
+
+describe('KorAP.MatchTreeItem', function () {
+  it('should be initializable', function () {
+    var mi = KorAP.MatchTreeItem.create(['cnx/c', 'cnx', 'c'])
+    expect(mi.element().firstChild.nodeValue).toEqual('cnx/c');
+    expect(mi.lcField()).toEqual(' cnx/c');
+    expect(mi.foundry()).toEqual('cnx');
+    expect(mi.layer()).toEqual('c');
+  });
+});
+
+describe('KorAP.MatchTreeMenu', function () {
+  it('should be initializable', function () {
+    var menu = KorAP.MatchTreeMenu.create([
+      ['cnx/c', 'cnx', 'c'],
+      ['xip/c', 'xip', 'c']
+    ]);
+
+    expect(menu.itemClass()).toEqual(KorAP.MatchTreeItem);
+    expect(menu.element().nodeName).toEqual('UL');
+    expect(menu.element().style.opacity).toEqual("0");
+    expect(menu.limit()).toEqual(6);
   });
 });
 
diff --git a/public/js/spec/menuSpec.js b/public/js/spec/menuSpec.js
index 08fea76..7419f83 100644
--- a/public/js/spec/menuSpec.js
+++ b/public/js/spec/menuSpec.js
@@ -154,6 +154,11 @@
     expect(mi.lcField()).toEqual(' baum');
   });
 
+  it('shouldn\'t have a reference to the menu', function () {
+    var menuItem = KorAP.OwnMenuItem.create(['Test']);
+    expect(menuItem.menu()).toBe(undefined);
+  });
+
   it('should be activatable and deactivateable by class', function () {
     var menuItem = KorAP.OwnMenuItem.create(['Test']);
 
@@ -376,6 +381,15 @@
     expect(menu.item(menu.length() - 1).noMore()).toBe(true);
   });
 
+  it('should have a reference to the menu', function () {
+    var menu = KorAP.HintMenu.create("cnx/", list);
+    expect(menu.item(0).menu()).toEqual(menu);
+
+    menu = KorAP.HintMenu.create("cnx/", list);
+    expect(menu.element().menu).toEqual(menu);
+  });
+
+
   it('should be visible', function () {
     var menu = KorAP.HintMenu.create("cnx/", list);
     expect(menu.delete()).toBe(undefined);
@@ -1035,8 +1049,6 @@
 
   });
 
-  it('should be page downable', function () {
-    
-  });
+  xit('should be page downable');
   xit('should be page upable');
 });
diff --git a/public/js/src/matchInfo.js b/public/js/src/matchInfo.js
index 540a605..30bd7b5 100644
--- a/public/js/src/matchInfo.js
+++ b/public/js/src/matchInfo.js
@@ -3,27 +3,35 @@
  *
  * @author Nils Diewald
  */
+// require menu.js
 /*
-  - Scroll with a static left legend.
-  - Highlight (at least mark as bold) the match
-  - Scroll to match vertically per default
+ * - Scroll with a static left legend.
+ * - Highlight (at least mark as bold) the match
+ * - Scroll to match vertically per default
  */
 var KorAP = KorAP || {};
 
 (function (KorAP) {
   "use strict";
 
+  var svgXmlns = "http://www.w3.org/2000/svg";
+
   // Default log message
   KorAP.log = KorAP.log || function (type, msg) {
     console.log(type + ": " + msg);
   };
 
+  // Localization values
+  var loc   = (KorAP.Locale = KorAP.Locale || {} );
+  loc.ADDTREE = loc.ADDTREE || 'Add tree view';
+
   KorAP._AvailableRE = new RegExp("^([^\/]+?)\/([^=]+?)(?:=(spans|rels|tokens))?$");
   KorAP._TermRE = new RegExp("^(?:([^\/]+?)\/)?([^:]+?):(.+?)$");
   KorAP._matchTerms  = ["corpusID", "docID", "textID"];
 
   // API requests
   KorAP.API = KorAP.API || {};
+
   // TODO: Make this async
   KorAP.API.getMatchInfo = KorAP.API.getMatchInfo || function () { return {} };
 
@@ -41,6 +49,19 @@
       return Object.create(KorAP.MatchInfo)._init(match, available);
     },
 
+    /**
+     * Destroy this match information view.
+     */
+    destroy : function () {
+
+      // Remove circular reference
+      if (this._treeMenu !== undefined)
+	delete this._treeMenu["info"];
+
+      this._treeMenu.destroy();
+      this._treeMenu = undefined;
+    },
+
     _init : function (match, available) {
       this._match = KorAP.Match.create(match);
       this._available = {
@@ -153,12 +174,124 @@
 
       // Get snippet from match info
       if (matchResponse["snippet"] !== undefined) {
-	this._tree = KorAP.MatchTree.create(matchResponse["snippet"]);
-	return this._tree;
+	// Todo: This should be cached somehow
+	return KorAP.MatchTree.create(matchResponse["snippet"]);
       };
 
       return null;
- 
+    },
+
+    /**
+     * Add a new tree view to the list
+     */
+    addTree : function (foundry, layer) {
+      var treeObj = this.getTree(foundry, layer);
+
+      // Something went wrong - probably log!!!
+      if (treeObj === null)
+	return;
+
+      var matchtree = document.createElement('div');
+      matchtree.classList.add('matchtree');
+
+      var h6 = matchtree.appendChild(document.createElement('h6'));
+      h6.appendChild(document.createElement('span'))
+	.appendChild(document.createTextNode(foundry));
+      h6.appendChild(document.createElement('span'))
+	.appendChild(document.createTextNode(layer));
+
+      var tree = matchtree.appendChild(
+	document.createElement('div')
+      );
+      tree.appendChild(treeObj.element());
+      this._element.insertBefore(matchtree, this._element.lastChild);
+
+      var close = tree.appendChild(document.createElement('em'));
+      close.addEventListener(
+	'click', function (e) {
+	  matchtree.parentNode.removeChild(matchtree);
+	  e.halt();
+	}
+      );
+
+      // Reposition the view to the center
+      // (This may in a future release be a reposition
+      // to move the root into the center or the actual
+      // match)
+      treeObj.center();
+    },
+
+    /**
+     * Create match information view.
+     */
+    element : function () {
+      if (this._element !== undefined)
+	return this._element;
+
+      // Create info table
+      var info = document.createElement('div');
+      info.classList.add('matchinfo');
+
+      // Append default table
+      var matchtable = document.createElement('div');
+      matchtable.classList.add('matchtable');
+      matchtable.appendChild(this.getTable().element());
+      info.appendChild(matchtable);
+
+      var spanLayers = this.getSpans().sort(
+	function (a, b) {
+	  if (a.foundry < b.foundry) {
+	    return -1;
+	  }
+	  else if (a.foundry > b.foundry) {
+	    return 1;
+	  }
+	  else if (a.layer < b.layer) {
+	    return -1;
+	  }
+	  else if (a.layer > b.layer) {
+	    return 1;
+	  };
+	  return 0;
+	});
+
+      var menuList = [];
+
+      // Show tree views
+      for (var i = 0; i < spanLayers.length; i++) {
+	var span = spanLayers[i];
+	
+	// Add foundry/layer to menu list
+	menuList.push([
+	  span.foundry + '/' + span.layer,
+	  span.foundry,
+	  span.layer
+	]);
+      };
+
+      // Create tree menu
+      var treemenu = this.treeMenu(menuList);
+      var span = info.appendChild(document.createElement('p'));
+      span.appendChild(document.createTextNode(loc.ADDTREE));
+
+      var treeElement = treemenu.element();
+      span.appendChild(treeElement);
+
+      span.addEventListener('click', function (e) {
+	treemenu.show('');
+	treemenu.focus();
+      });
+      
+      this._element = info;
+
+      return info;
+    },
+
+    treeMenu : function (list) {
+      if (this._treeMenu !== undefined)
+	return this._treeMenu;
+
+      return this._treeMenu = KorAP.MatchTreeMenu.create(this, list);
     }
   };
 
@@ -332,6 +465,9 @@
      * Get HTML table view of annotations.
      */
     element : function () {
+      if (this._element !== undefined)
+	return this._element;
+
       // First the legend table
       var d = document;
       var table = d.createElement('table');
@@ -401,14 +537,14 @@
 	};
       };
 
-      return table;
+      return this._element = table;
     }
   };
 
+
   /**
-   * Visualize span annotations as a tree.
+   * Visualize span annotations as a tree using Dagre.
    */
-  // http://java-hackers.com/p/paralin/meteor-dagre-d3
   KorAP.MatchTree = {
 
     create : function (snippet) {
@@ -419,44 +555,47 @@
       return this._next;
     },
 
+    _addNode : function (id, obj) {
+      obj["width"] = 55;
+      obj["height"] = 20;
+      this._graph.setNode(id, obj)
+    },
+
+    _addEdge : function (src, target) {
+      this._graph.setEdge(src, target);
+    },
+
     _init : function (snippet) {
       this._next = new Number(0);
 
       // Create html for traversal
       var html = document.createElement("div");
       html.innerHTML = snippet;
-      this._graph = new dagreD3.Digraph();
+      var g = new dagre.graphlib.Graph({
+	"directed" : true	
+      });
+      g.setGraph({
+	"nodesep" : 35,
+	"ranksep" : 15,
+	"marginx" : 40,
+	"marginy" : 10
+      });
+      g.setDefaultEdgeLabel({});
+
+      this._graph = g;
 
       // This is a new root
-      this._graph.addNode(
+      this._addNode(
 	this._next++,
-	{ "nodeclass" : "root" }
+	{ "class" : "root" }
       );
 
       // Parse nodes from root
       this._parse(0, html.childNodes);
 
       // Root node has only one child - remove
-      if (Object.keys(this._graph._outEdges[0]).length === 1)
-	  this._graph.delNode(0);
-
-      // Initialize d3 renderer for dagre
-      this._renderer = new dagreD3.Renderer();
-      /*
-      var oldDrawNodes = this._renderer.drawNodes();
-      this._renderer.drawNodes(
-	function (graph, root) {
-	  var svgNodes = oldDrawNodes(graph, root);
-	  svgNodes.each(
-	    function (u) {
-	      d3.select(this).classed(graph.node(u).nodeClass, true);
-	    }
-	  );
-	}
-      );
-*/
-      // Disable pan and zoom
-      this._renderer.zoom(false);
+      if (g.outEdges(0).length === 1)
+	g.removeNode(0);
 
       html = undefined;
       return this;
@@ -464,7 +603,7 @@
 
     // Remove foundry and layer for labels
     _clean : function (title) {
-      return title.replace(KorAP._TermRE, RegExp.$1);
+      return title.replace(KorAP._TermRE, "$3");
     },
 
     // Parse the snippet
@@ -482,11 +621,11 @@
 	    // Add child node
 	    var id = this._next++;
 
-	    this._graph.addNode(id, {
-	      "nodeclass" : "middle",
+	    this._addNode(id, {
+	      "class" : "middle",
 	      "label" : title
 	    });
-	    this._graph.addEdge(null, parent, id);
+	    this._addEdge(parent, id);
 
 	    // Check for next level
 	    if (c.hasChildNodes())
@@ -505,36 +644,180 @@
 
 	    // Add child node
 	    var id = this._next++;
-	    this._graph.addNode(id, {
-	      "nodeclass" : "leaf",
+	    this._addNode(id, {
+	      "class" : "leaf",
 	      "label" : c.nodeValue
 	    });
 
-	    this._graph.addEdge(null, parent, id);
+	    this._addEdge(parent, id);
 	  };
       };
       return this;
     },
 
+    /**
+     * Center the viewport of the canvas
+     */
+    center : function () {
+      if (this._element === undefined)
+	return;
+
+      var treeDiv = this._element.parentNode;
+
+      var cWidth = parseFloat(window.getComputedStyle(this._element).width);
+      var treeWidth = parseFloat(window.getComputedStyle(treeDiv).width);
+      // Reposition:
+      if (cWidth > treeWidth) {
+	var scrollValue = (cWidth - treeWidth) / 2;
+	treeDiv.scrollLeft = scrollValue;
+      };
+    },
+
+    // Get element
     element : function () {
-      this._element = document.createElement('div');
-      var svg = document.createElement('svg');
-      this._element.appendChild(svg);
-      var svgGroup = svg.appendChild(document.createElement('svg:g'));
+      if (this._element !== undefined)
+	return this._element;
 
-      svgGroup = d3.select(svgGroup);
+      var g = this._graph;
 
-      console.log(svgGroup);
-      var layout = this._renderer.run(this._graph, svgGroup);
-/*
-      var w = layout.graph().width;
-      var h = layout.graph().height;
-      this._element.setAttribute("width", w + 10);
-      this._element.setAttribute("height", h + 10);
-      svgGroup.attr("transform", "translate(5, 5)");
-*/
+      dagre.layout(g);
+
+      var canvas = document.createElementNS(svgXmlns, 'svg');
+      this._element = canvas;
+
+      canvas.setAttribute('height', g.graph().height);
+      canvas.setAttribute('width', g.graph().width);
+
+      // Create edges
+      g.edges().forEach(
+	function (e) {
+	  var src = g.node(e.v);
+	  var target = g.node(e.w);
+	  var p = document.createElementNS(svgXmlns, 'path');
+	  p.setAttributeNS(null, "d", _line(src, target));
+	  p.classList.add('edge');
+	  canvas.appendChild(p);
+	});
+
+      // Create nodes
+      g.nodes().forEach(
+	function (v) {
+	  v = g.node(v);
+	  var group = document.createElementNS(svgXmlns, 'g');
+	  group.classList.add(v.class);
+
+	  // Add node box
+	  var rect = group.appendChild(document.createElementNS(svgXmlns, 'rect'));
+	  rect.setAttributeNS(null, 'x', v.x - v.width / 2);
+	  rect.setAttributeNS(null, 'y', v.y - v.height / 2);
+	  rect.setAttributeNS(null, 'width', v.width);
+	  rect.setAttributeNS(null, 'height', v.height);
+	  rect.setAttributeNS(null, 'rx', 5);
+	  rect.setAttributeNS(null, 'ry', 5);
+
+	  // Add label
+	  var text = group.appendChild(document.createElementNS(svgXmlns, 'text'));
+	  text.setAttributeNS(null, 'x', v.x - v.width / 2);
+	  text.setAttributeNS(null, 'y', v.y - v.height / 2);
+	  text.setAttributeNS(
+	    null,
+	    'transform',
+	    'translate(' + v.width/2 + ',' + ((v.height / 2) + 5) + ')'
+	  );
+	  var tspan = document.createElementNS(svgXmlns, 'tspan');
+	  tspan.appendChild(document.createTextNode(v.label));
+	  text.appendChild(tspan);
+	  canvas.appendChild(group);
+	}
+      );
+
       return this._element;
     }
   };
 
+  /**
+   * Menu item for tree view choice.
+   */
+  KorAP.MatchTreeItem = {
+    create : function (params) {
+      return Object.create(KorAP.MenuItem)
+	.upgradeTo(KorAP.MatchTreeItem)._init(params);
+    },
+    content : function (content) {
+      if (arguments.length === 1) {
+	this._content = content;
+      };
+      return this._content;
+    },
+
+    // The foundry attribute
+    foundry : function () {
+      return this._foundry;
+    },
+
+    // The layer attribute
+    layer : function () {
+      return this._layer;
+    },
+
+    // enter or click
+    onclick : function (e) {
+      var menu = this.menu();
+      menu.hide();
+      e.halt();
+      menu.info().addTree(this._foundry, this._layer);
+    },
+    
+    _init : function (params) {
+      if (params[0] === undefined)
+	throw new Error("Missing parameters");
+
+      this._name    = params[0];
+      this._foundry = params[1];
+      this._layer   = params[2];
+      this._content = document.createTextNode(this._name);
+      this._lcField = ' ' + this.content().textContent.toLowerCase();
+      return this;
+    }
+  };
+
+
+  /**
+   * Menu to choose from for tree views.
+   */
+  KorAP.MatchTreeMenu = {
+    create : function (info, params) {
+      var obj = Object.create(KorAP.Menu)
+	.upgradeTo(KorAP.MatchTreeMenu)
+	._init(KorAP.MatchTreeItem, undefined, params);
+      obj.limit(6);
+      obj._info = info;
+
+      // This is only domspecific
+      obj.element().addEventListener('blur', function (e) {
+	this.menu.hide();
+      });
+
+      return obj;
+    },
+    info :function () {
+      return this._info;
+    }
+  };
+
+
+  // Create path for node connections 
+  function _line (src, target) {
+    var x1 = src.x,
+        y1 = src.y,
+        x2 = target.x,
+        y2 = target.y - target.height / 2;
+
+    // c 0,0 -10,0
+    return 'M ' + x1 + ',' + y1 + ' ' + 
+      'C ' + x1 + ',' + y1 + ' ' + 
+      x2 + ',' + (y2 - (y2 - y1) / 2)  + ' ' + 
+      x2 + ',' + y2;
+  };
+
 }(this.KorAP));
diff --git a/public/js/src/menu.js b/public/js/src/menu.js
index 8ccf740..a7271c5 100644
--- a/public/js/src/menu.js
+++ b/public/js/src/menu.js
@@ -40,6 +40,21 @@
       return Object.create(KorAP.Menu)._init(params);
     },
 
+    /**
+     * Destroy this menu
+     * (in case you don't trust the
+     * mark and sweep GC)!
+     */
+    destroy : function () {
+      if (this._element != undefined)
+	delete this._element["menu"]; 
+
+      for (var i = 0; i < this._items.length; i++) {
+	delete this._items[i]["_menu"];
+      };
+      
+    },
+
     focus : function () {
       this._element.focus();
     },
@@ -96,11 +111,11 @@
 
 	// Click on prefix
 	if (this._prefix.active())
-	  this._prefix.onclick();
+	  this._prefix.onclick(e);
 
 	// Click on item
 	else
-	  this.liveItem(this._position).onclick();
+	  this.liveItem(this._position).onclick(e);
 	e.halt();
 	break;
       case 8: // 'Backspace'
@@ -139,6 +154,9 @@
       e.setAttribute('class', 'menu');
       e.appendChild(this._prefix.element());
 
+      // This has to be cleaned up later on
+      e["menu"] = this;
+
       // Arrow keys
       e.addEventListener(
 	'keypress',
@@ -165,6 +183,10 @@
       // Initialize item list based on parameters
       for (i in params) {
 	var obj = itemClass.create(params[i]);
+
+	// This may become circular
+	obj["_menu"] = this;
+
 	this._items.push(obj);
       };
       this._limit    = KorAP.menuLimit;
@@ -252,10 +274,7 @@
       this.active = false;
       this.delete();
       this._element.style.opacity = 0;
-
-/*
-      this._element.blur();
-*/
+      /* this._element.blur(); */
     },
 
     // Initialize the list
@@ -827,6 +846,13 @@
 
       return this;
     },
+
+    /**
+     * Return menu list.
+     */
+    menu : function () {
+      return this._menu;
+    }
   };
 
   KorAP.MenuPrefix = {
@@ -890,7 +916,7 @@
       this._string += string;
       this._update();
     },
-    onclick : function () {},
+    onclick : function (e) {},
     backspace : function () {
       if (this._string.length > 1) {
 	this._string = this._string.substring(
diff --git a/public/js/src/vc.js b/public/js/src/vc.js
index fa63457..2c8ad01 100644
--- a/public/js/src/vc.js
+++ b/public/js/src/vc.js
@@ -14,6 +14,8 @@
   TODO: Implement a working localization solution!
   TODO: Disable "and" or "or" in case it's followed
         by an unspecified document
+  TODO: Implement "persistance"-Option,
+        injecting the current creation date stamp
 
   Error codes:
   701: "JSON-LD group has no @type attribute"