From a6c109c1d07e7e00ad24cc6eeb1eca5e57df61f0 Mon Sep 17 00:00:00 2001
From: Dan Vanderkam <danvk@google.com>
Date: Fri, 22 Oct 2010 10:50:57 -0400
Subject: [PATCH] fix logic error

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

diff --git a/dygraph.js b/dygraph.js
index 6e9aac7..650d317 100644
--- a/dygraph.js
+++ b/dygraph.js
@@ -2820,7 +2820,7 @@ Dygraph.prototype.visibility = function() {
  */
 Dygraph.prototype.setVisibility = function(num, value) {
   var x = this.visibility();
-  if (num < 0 && num >= x.length) {
+  if (num < 0 || num >= x.length) {
     this.warn("invalid series number in setVisibility: " + num);
   } else {
     x[num] = value;
-- 
2.7.4