fix plotter demo

diff --git a/tests/plotter.html b/tests/plotter.html
index 414197a..c2f0b81 100644 (file)
--- a/tests/plotter.html
+++ b/tests/plotter.html
@@ -42,7 +42,7 @@
         if (data[0].length == 2) {
           labels.push('Y');
         } else {
-          for (var i = 0; i < data[0].length; i++) {
+          for (var i = 1; i < data[0].length; i++) {
             labels.push('Y' + (1 + i));
           }
         }