derekovecs: handle the case when there is no 2nd model for comparison
diff --git a/templates/index.html.ep b/templates/index.html.ep
index 5c38c77..139ada8 100644
--- a/templates/index.html.ep
+++ b/templates/index.html.ep
@@ -731,13 +731,14 @@
<div id="topwrapper">
<div style="visibility: hidden;" id="tabs">
<ul>
- % if($distantWords) {
+ % if($mergedEnd && $distantWords) {
<li><a href="#tabs-0" title="Cos offsets of the words furthest away from their position in the reference corpus."">Offsets</a></li>
% }
<li><a href="#tabs-1">Semantics (TSNE-map)</a></li>
<li><a href="#tabs-2">Semantics (SOM)</a></li>
<li><a href="#tabs-3">Syntagmatic (collocates)</a></li>
</ul>
+ % if($mergedEnd && $distantWords) {
<div id="tabs-0" style="display: flex; padding: 5px; flex-flow: row wrap;">
<div id="vocabdist" style="width: 230px; margin-bottom: 15px;">
<table class="display compact nowrap" id="vocabdistt">
@@ -758,6 +759,7 @@
</table>
</div>
</div>
+ % }
<div id="tabs-1" style="display: flex; padding: 5px; flex-flow: row wrap;">
% if($lists && (@$lists) > 0 && (@$lists)[0]) {
<div id="wrapper">
diff --git a/w2v-server.pl b/w2v-server.pl
index 2ec8c40..a8cb8d0 100755
--- a/w2v-server.pl
+++ b/w2v-server.pl
@@ -845,6 +845,9 @@
knn *nbs = NULL;
int N = 1000;
+ if(merged_end == 0)
+ result = "[]";
+
if(result != NULL)
return result;