ENH : add stale flag to QuadMesh

tacaswell · tacaswell · commit 429031fb5ab2 · 2015-05-01T21:52:41.000-04:00
diff --git a/lib/matplotlib/collections.py b/lib/matplotlib/collections.py
@@ -1708,6 +1708,7 @@ def get_paths(self):
     def set_paths(self):
         self._paths = self.convert_mesh_to_paths(
             self._meshWidth, self._meshHeight, self._coordinates)
+        self.stale = True
 
     def get_datalim(self, transData):
         return (self.get_transform() - transData).transform_bbox(self._bbox)
@@ -1831,6 +1832,7 @@ def draw(self, renderer):
                 self._antialiased, self.get_edgecolors())
         gc.restore()
         renderer.close_group(self.__class__.__name__)
+        self.stale = False
 
 
 patchstr = artist.kwdoc(Collection)
