From 1b2292c1da9b640d64bc8b0e1d19d50509d290f9 Mon Sep 17 00:00:00 2001
From: josdejong <wjosdejong@gmail.com>
Date: Fri, 20 Sep 2013 18:09:28 +0200
Subject: [PATCH] A fix calculating the size of a node when the range is empty

---
 src/graph/Node.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/graph/Node.js b/src/graph/Node.js
index 36fb87bb..edb10a6c 100644
--- a/src/graph/Node.js
+++ b/src/graph/Node.js
@@ -397,8 +397,13 @@ Node.prototype.getDistance = function(x, y) {
  */
 Node.prototype.setValueRange = function(min, max) {
     if (!this.radiusFixed && this.value !== undefined) {
+      if (max == min) {
+        this.radius = (this.radiusMin + this.radiusMax) / 2;
+      }
+      else {
         var scale = (this.radiusMax - this.radiusMin) / (max - min);
         this.radius = (this.value - min) * scale + this.radiusMin;
+      }
     }
 };