From d228035fe286246620306d9cead2557ada45134d Mon Sep 17 00:00:00 2001
From: Dan Vanderkam <danvdk@gmail.com>
Date: Mon, 13 Apr 2015 13:47:33 -0400
Subject: [PATCH] Set this for drawCallback

---
 dygraph.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dygraph.js b/dygraph.js
index ea04d3e..eab46a2 100644
--- a/dygraph.js
+++ b/dygraph.js
@@ -2726,7 +2726,7 @@ Dygraph.prototype.renderGraph_ = function(is_initial_draw) {
   this.canvas_.getContext('2d').clearRect(0, 0, this.width_, this.height_);
 
   if (this.getFunctionOption("drawCallback") !== null) {
-    this.getFunctionOption("drawCallback")(this, is_initial_draw);
+    this.getFunctionOption("drawCallback").call(this, this, is_initial_draw);
   }
   if (is_initial_draw) {
     this.readyFired_ = true;
-- 
2.7.4