From ef0b205bc164b9cb9023e4c91e95bf4cdd4ab669 Mon Sep 17 00:00:00 2001
From: Robert Konigsberg <konigsberg@google.com>
Date: Fri, 8 Oct 2010 10:05:46 -0400
Subject: [PATCH] updated comment.
---
dygraph.js | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/dygraph.js b/dygraph.js
index f70bfa9..001d224 100644
--- a/dygraph.js
+++ b/dygraph.js
@@ -810,9 +810,10 @@ Dygraph.prototype.createDragInterface_ = function() {
var maxDate = minDate + dateRange;
self.dateWindow_ = [minDate, maxDate];
- // if a y-axis as been defined then the y-axis scale is maintained.
- // otherwise don't set a value window, thereby forcing automatic y-axis
- // scaling.
+
+ // y-axis scaling is automatic unless a valueRange is defiend or
+ // if the user zooms in on the y-axis. If neither is true, valueWindow
+ // will be null.
if (self.valueWindow_) {
var maxValue = draggingValue + (dragEndY / self.height_) * valueRange;
var minValue = maxValue - valueRange;
--
2.7.4