Revision: 6106
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=6106&view=rev
Author: mdboom
Date: 2008-09-18 13:09:01 +0000 (Thu, 18 Sep 2008)
Log Message:
-----------
Fix interpolation in polar plots when theta values go negative. Thanks Jan
Gillis for reporting.
Modified Paths:
--------------
trunk/matplotlib/CHANGELOG
trunk/matplotlib/lib/matplotlib/projections/polar.py
Modified: trunk/matplotlib/CHANGELOG
===================================================================
--- trunk/matplotlib/CHANGELOG 2008-09-18 01:30:52 UTC (rev 6105)
+++ trunk/matplotlib/CHANGELOG 2008-09-18 13:09:01 UTC (rev 6106)
@@ -1,6 +1,8 @@
+2008-09-18 Fix polar interpolation to handle negative values of theta - MGD
+
2008-09-14 Reorganized cbook and mlab methods related to numerical
calculations that have little to do with the goals of those two
- modules into a separate module numerical_methods.py
+ modules into a separate module numerical_methods.py
Also, added ability to select points and stop point selection
with keyboard in ginput and manual contour labeling code.
Finally, fixed contour labeling bug. - DMK
Modified: trunk/matplotlib/lib/matplotlib/projections/polar.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/projections/polar.py 2008-09-18
01:30:52 UTC (rev 6105)
+++ trunk/matplotlib/lib/matplotlib/projections/polar.py 2008-09-18
13:09:01 UTC (rev 6106)
@@ -56,6 +56,8 @@
def transform_path(self, path):
vertices = path.vertices
+ t = vertices[:, 0:1]
+ t[t != (npy.pi * 2.0)] %= (npy.pi * 2.0)
if len(vertices) == 2 and vertices[0, 0] == vertices[1, 0]:
return Path(self.transform(vertices), path.codes)
ipath = path.interpolated(self._resolution)
@@ -168,6 +170,7 @@
"""
self._rpad = 0.05
+ self.resolution = kwargs.pop('resolution', self.RESOLUTION)
Axes.__init__(self, *args, **kwargs)
self.set_aspect('equal', adjustable='box', anchor='C')
self.cla()
@@ -195,7 +198,7 @@
self.transScale = TransformWrapper(IdentityTransform())
# A (possibly non-linear) projection on the (already scaled) data
- self.transProjection = self.PolarTransform(self.RESOLUTION)
+ self.transProjection = self.PolarTransform(self.resolution)
# An affine transformation on the data, generally to limit the
# range of the axes
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