make sure integer division is not used.

Jeff Whitaker · Jeff Whitaker · commit de397576aef5 · 2006-02-24T13:08:01.000Z
svn path=/trunk/matplotlib/; revision=2089
diff --git a/lib/matplotlib/colors.py b/lib/matplotlib/colors.py
@@ -656,7 +656,7 @@ def __call__(self, value):
         else:
             if self.clip:
                 val = clip(val.filled(vmax), vmin, vmax)
-            result = (val-vmin)/(vmax-vmin)
+            result = (val-vmin)/float(vmax-vmin)
         if vtype == 'scalar':
             result = result[0]
         return result
