SF.net SVN: matplotlib: [5003] trunk/matplotlib/lib/matplotlib/collections. py

[<md...@us...>]

Revision: 5003
          http://matplotlib.svn.sourceforge.net/matplotlib/?rev=5003&view=rev
Author:   mdboom
Date:     2008-03-18 11:35:10 -0700 (Tue, 18 Mar 2008)

Log Message:
-----------
Fixing set_alpha bug when there is no facecolors (thanks Michael Fitzgerald)

Modified Paths:
--------------
    trunk/matplotlib/lib/matplotlib/collections.py

Modified: trunk/matplotlib/lib/matplotlib/collections.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/collections.py	2008-03-14 12:22:28 UTC (rev 5002)
+++ trunk/matplotlib/lib/matplotlib/collections.py	2008-03-18 18:35:10 UTC (rev 5003)
@@ -153,7 +153,7 @@
 
         if self.have_units():
             paths = []
-            for path in self._paths:
+            for path in self.get_paths():
                 vertices = path.vertices
                 xs, ys = vertices[:, 0], vertices[:, 1]
                 xs = self.convert_xunits(xs)
@@ -305,7 +305,8 @@
         except TypeError: raise TypeError('alpha must be a float')
         else:
             artist.Artist.set_alpha(self, alpha)
-            self._facecolors[:, 3] = alpha
+            if len(self._facecolors):
+                self._facecolors[:, 3] = alpha
             self._edgecolors[:, 3] = alpha
 
     def get_linewidths(self):


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