SF.net SVN: matplotlib:[6061] trunk/matplotlib

Revision: 6061
          http://matplotlib.svn.sourceforge.net/matplotlib/?rev=6061&view=rev
Author:   mdboom
Date:     2008-09-03 19:15:22 +0000 (Wed, 03 Sep 2008)

Log Message:
-----------
[ 2091036 ] Using log axes with base 2 fails

Modified Paths:
--------------
    trunk/matplotlib/CHANGELOG
    trunk/matplotlib/lib/matplotlib/scale.py

Modified: trunk/matplotlib/CHANGELOG
===================================================================
--- trunk/matplotlib/CHANGELOG	2008-09-01 22:50:47 UTC (rev 6060)
+++ trunk/matplotlib/CHANGELOG	2008-09-03 19:15:22 UTC (rev 6061)
@@ -1,3 +1,5 @@
+2008-09-03 Fix log with base 2 - MGD
+
 2008-09-01 Added support for bilinear interpolation in
            NonUniformImage; patch by Gregory Lielens. - EF
 

Modified: trunk/matplotlib/lib/matplotlib/scale.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/scale.py	2008-09-01 22:50:47 UTC (rev 6060)
+++ trunk/matplotlib/lib/matplotlib/scale.py	2008-09-03 19:15:22 UTC (rev 6061)
@@ -91,7 +91,7 @@
         def transform(self, a):
             a = _mask_non_positives(a * 2.0)
             if isinstance(a, MaskedArray):
-                return ma.log2(a)
+                return ma.log(a) / np.log(2)
             return np.log2(a)
 
         def inverted(self):


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