Fix exception when a particular contour doesn't exist.

mdboom · mdboom · commit 79be4998bd78 · 2007-12-03T19:16:17.000Z
svn path=/branches/transforms/; revision=4569
diff --git a/lib/matplotlib/axes.py b/lib/matplotlib/axes.py
@@ -1137,7 +1137,8 @@ def add_collection(self, collection, autolim=True):
         self._set_artist_props(collection)
         collection.set_clip_path(self.axesPatch)
         if autolim:
-            self.update_datalim(collection.get_datalim(self.transData))
+            if len(collection._paths):
+                self.update_datalim(collection.get_datalim(self.transData))
         collection._remove_method = lambda h: self.collections.remove(h)
 
     def add_line(self, line):
