SF.net SVN: matplotlib:[7424] branches/v0_99_maint/lib/matplotlib/colors.py

[<ef...@us...>]

Revision: 7424
          http://matplotlib.svn.sourceforge.net/matplotlib/?rev=7424&view=rev
Author:   efiring
Date:     2009-08-08 06:07:06 +0000 (Sat, 08 Aug 2009)

Log Message:
-----------
Restore default colormap behavior: no color (alpha = 0) for masked data

Modified Paths:
--------------
    branches/v0_99_maint/lib/matplotlib/colors.py

Modified: branches/v0_99_maint/lib/matplotlib/colors.py
===================================================================
--- branches/v0_99_maint/lib/matplotlib/colors.py	2009-08-08 02:06:56 UTC (rev 7423)
+++ branches/v0_99_maint/lib/matplotlib/colors.py	2009-08-08 06:07:06 UTC (rev 7424)
@@ -488,7 +488,10 @@
         if not self._isinit: self._init()
         alpha = min(alpha, 1.0) # alpha must be between 0 and 1
         alpha = max(alpha, 0.0)
-        self._lut[:,-1] = alpha
+        self._lut[:-1,-1] = alpha  # Don't assign global alpha to i_bad;
+                                   # it would defeat the purpose of the
+                                   # default behavior, which is to not
+                                   # show anything where data are missing.
         mask_bad = None
         if not cbook.iterable(X):
             vtype = 'scalar'


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