Revision: 4762
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=4762&view=rev
Author: mdboom
Date: 2007-12-18 05:02:33 -0800 (Tue, 18 Dec 2007)
Log Message:
-----------
Minor speed improvement
Modified Paths:
--------------
branches/transforms/lib/matplotlib/scale.py
Modified: branches/transforms/lib/matplotlib/scale.py
===================================================================
--- branches/transforms/lib/matplotlib/scale.py 2007-12-17 18:29:04 UTC (rev
4761)
+++ branches/transforms/lib/matplotlib/scale.py 2007-12-18 13:02:33 UTC (rev
4762)
@@ -301,7 +301,10 @@
def transform(self, a):
masked = ma.masked_where((a < -self.thresh) | (a > self.thresh), a)
- return ma.log(ma.tan(masked) + 1.0 / ma.cos(masked))
+ if masked.mask.any():
+ return ma.log(ma.abs(ma.tan(masked) + 1.0 / ma.cos(masked)))
+ else:
+ return npy.log(npy.abs(npy.tan(a) + 1.0 / npy.cos(a)))
def inverted(self):
return MercatorLatitudeScale.InvertedMercatorLatitudeTransform()
@@ -346,6 +349,7 @@
def limit_range_for_scale(self, vmin, vmax, minpos):
return max(vmin, -self.thresh), min(vmax, self.thresh)
+
_scale_mapping = {
'linear' : LinearScale,
'log' : LogScale,
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