update sample to have negative numbers

diff --git a/samples/line-stepped.html b/samples/line-stepped.html
index b482cf13802c6e793fbb960d96b6acd66261ad37..e618a698cfaee5542f4a8fe83349a3996d73c839 100644 (file)
--- a/samples/line-stepped.html
+++ b/samples/line-stepped.html
@@ -30,7 +30,7 @@
         var MONTHS = ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];
         
         var randomScalingFactor = function() {
-            return Math.round(Math.random() * 100);
+            return (Math.random() > 0.5 ? -1 : 1) * Math.round(Math.random() * 100);
             //return 0;
         };
         var randomColorFactor = function() {