fix slider polygon on move; this is already fixed in master

jdh2358 · jdh2358 · commit 80cdde25522e · 2012-03-17T11:16:11.000-05:00
diff --git a/lib/matplotlib/widgets.py b/lib/matplotlib/widgets.py
@@ -316,8 +316,8 @@ def _update(self, event):
 
     def set_val(self, val):
         xy = self.poly.xy
-        xy[-1] = val, 0
-        xy[-2] = val, 1
+        xy[2] = val, 1
+        xy[3] = val, 0
         self.poly.xy = xy
         self.valtext.set_text(self.valfmt%val)
         if self.drawon: self.ax.figure.canvas.draw()
