copy over a sneaky undefined value

diff --git a/src/dygraph-default-attrs.js b/src/dygraph-default-attrs.js
index b7dd6e4..5740a49 100644 (file)
--- a/src/dygraph-default-attrs.js
+++ b/src/dygraph-default-attrs.js
@@ -34,7 +34,7 @@ var DEFAULT_ATTRS = {
   rightGap: 5,
 
   showRoller: false,
-  xValueParser: utils.dateParser,
+  xValueParser: undefined,
 
   delimiter: ',',