tests

Philmod · Oct 24, 2012 · 35f5683 · 35f5683
1 parent a3abdbb
commit 35f5683
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/lib/kmeans.js b/lib/kmeans.js
@@ -49,7 +49,7 @@ exports.clusterize = function(vector, options, callback) {
  */
 
 function clusterize(vector, options, callback) {
-  if (typeof callback != 'function') throw new Error("Provide a callback function");
+  if (!callback || typeof callback != 'function') throw new Error("Provide a callback function");
   if (!options || !options.k || options.k<1) return callback(new Error("Provide a correct number k of clusters"));
   if (!_.isArray(vector)) return callback(new Error("Provide an array of data"));
   this.options = options;