REFACTORING: use the method "getLeftBoundary" instead of a private

variable

diff --git a/dygraph-layout.js b/dygraph-layout.js
index 552911e..9e042f2 100644 (file)
--- a/dygraph-layout.js
+++ b/dygraph-layout.js
@@ -211,10 +211,7 @@ DygraphLayout.prototype._evaluateLineCharts = function() {
   // on chrome+linux, they are 6 times more expensive than iterating through the
   // points and drawing the lines. The brunt of the cost comes from allocating
   // the |point| structures.
-  var boundaryIdStart = 0;
-  if (this.dygraph_.boundaryIds_.length > 0) {
-    boundaryIdStart = this.dygraph_.boundaryIds_[this.dygraph_.boundaryIds_.length-1][0]
-  }
+  var boundaryIdStart = this.dygraph_.getLeftBoundary_();
   for (var setIdx = 0; setIdx < this.datasets.length; setIdx++) {
     var dataset = this.datasets[setIdx];
     var setName = this.setNames[setIdx];