Improve empty collection check in add_collection.

akhmerov · akhmerov · commit 3f0afd585e3f · 2012-11-13T22:41:34.000-05:00
diff --git a/lib/matplotlib/axes.py b/lib/matplotlib/axes.py
@@ -1491,9 +1491,8 @@ def add_collection(self, collection, autolim=True):
 
         if collection.get_clip_path() is None:
             collection.set_clip_path(self.patch)
-        if autolim:
-            if collection._paths and len(collection._paths):
-                self.update_datalim(collection.get_datalim(self.transData))
+        if autolim and collection._paths and len(collection._offsets):
+            self.update_datalim(collection.get_datalim(self.transData))
 
         collection._remove_method = lambda h: self.collections.remove(h)
         return collection
