Fixed min = max bug, thanks to Michael Messinides

git-svn-id: https://flot.googlecode.com/svn/trunk@32 1e0a6537-2640-0410-bfb7-f154510ff394

NEWS.txt

+Flot 0.x
+--------
+
+Fixed a bug in dealing with data where min = max, thanks to Michael
+Messinides.
+
+
 Flot 0.2
 --------
 

jquery.flot.js

@@ -232,20 +232,19 @@
         function calculateRange(axis, axisOptions) {
             var min = axisOptions.min != null ? axisOptions.min : axis.datamin;
             var max = axisOptions.max != null ? axisOptions.max : axis.datamax;
-            var delta = max - min;
 
             // check degenerate case
-            if (delta == 0.0) {
+            if (max - min == 0.0) {
                 var widen;
                 if (max == 0.0)
                     widen = 1.0;
                 else
                     widen = 0.01;
 
-                axis.min = max - widen;
-                axis.max = max + widen;
+                min -= widen;
+                max += widen;
             }
-            else {
+            
             axis.tickSize = getTickSize(axisOptions.noTicks, min, max, axisOptions.tickDecimals);
                 
             // consider autoscaling
@@ -277,7 +276,6 @@
             axis.min = min;
             axis.max = max;
         }
-        }
 
         function extendXRangeIfNeededByBar() {
             if (options.xaxis.max == null) {