Revision: 8348
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=8348&view=rev
Author: efiring
Date: 2010-05-30 23:58:27 +0000 (Sun, 30 May 2010)
Log Message:
-----------
LogNorm.autoscale ignores nonpositive values; closes 2953069
Modified Paths:
--------------
trunk/matplotlib/lib/matplotlib/colors.py
Modified: trunk/matplotlib/lib/matplotlib/colors.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/colors.py 2010-05-30 21:31:19 UTC (rev
8347)
+++ trunk/matplotlib/lib/matplotlib/colors.py 2010-05-30 23:58:27 UTC (rev
8348)
@@ -850,6 +850,8 @@
vtype = 'scalar'
val = ma.array([value]).astype(np.float)
+ val = ma.masked_less_equal(val, 0, copy=False)
+
self.autoscale_None(val)
vmin, vmax = self.vmin, self.vmax
if vmin > vmax:
@@ -879,6 +881,24 @@
else:
return vmin * pow((vmax/vmin), value)
+ def autoscale(self, A):
+ '''
+ Set *vmin*, *vmax* to min, max of *A*.
+ '''
+ A = ma.masked_less_equal(A, 0, copy=False)
+ self.vmin = ma.min(A)
+ self.vmax = ma.max(A)
+
+ def autoscale_None(self, A):
+ ' autoscale only None-valued vmin or vmax'
+ if self.vmin is not None and self.vmax is not None:
+ return
+ A = ma.masked_less_equal(A, 0, copy=False)
+ if self.vmin is None:
+ self.vmin = ma.min(A)
+ if self.vmax is None:
+ self.vmax = ma.max(A)
+
class BoundaryNorm(Normalize):
'''
Generate a colormap index based on discrete intervals.
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