X-Git-Url: https://adrianiainlam.tk/git/?a=blobdiff_plain;f=dygraph.js;h=8858396e8d0cc2df9ea52cd3f973f4b7003f6c21;hb=f18986e594ec54f8402757b9c087f6a20d611b06;hp=23b68e4094b8ad3ad25b8fdc8d2fd1be7b812dee;hpb=c776c2165f2e3088e53f282e058cf1a8553decbb;p=dygraphs.git

diff --git a/dygraph.js b/dygraph.js
index 23b68e4..8858396 100644
--- a/dygraph.js
+++ b/dygraph.js
@@ -570,7 +570,7 @@ Dygraph.prototype.createDragInterface_ = function() {
     dragStartX = getX(event);
     dragStartY = getY(event);
 
-    if (event.altKey) {
+    if (event.altKey || event.shiftKey) {
       if (!self.dateWindow_) return;  // have to be zoomed in to pan.
       isPanning = true;
       dateRange = self.dateWindow_[1] - self.dateWindow_[0];
@@ -1645,7 +1645,13 @@ Dygraph.prototype.parseDataTable_ = function(data) {
   var ret = [];
   for (var i = 0; i < rows; i++) {
     var row = [];
-    if (!data.getValue(i, 0)) continue;
+    if (typeof(data.getValue(i, 0)) === 'undefined' ||
+        data.getValue(i, 0) === null) {
+      this.warning("Ignoring row " + i +
+                   " of DataTable because of undefined or null first column.");
+      continue;
+    }
+
     if (indepType == 'date') {
       row.push(data.getValue(i, 0).getTime());
     } else {