This is a bug report for matplotlib version 0.99.1.1
The clip_path keyword of imshow() does not work when setting it to (Path, Transform) for two reasons:
1. On line 622 of artist.py, v is now the tuple (Path,Transform) and should be apply to func with apply(func,v). Hence the following suggested change:
for k,v in props.items():
func = getattr(self, 'set_'+k, None)
if func is None or not callable(func):
raise AttributeError('Unknown property %s'%k)
< func(v)
> if type(v) is tuple:
> apply(func,v)
else:
func(v)
changed = True
2. On line 6278 of axes.py, im.set_clip_path(self.patch) should not overwrite the clip path if already set. Hence the following suggested change:
im.set_data(X)
im.set_alpha(alpha)
self._set_artist_props(im)
< im.set_clip_path(self.patch)
> if not im._clipon:
> im.set_clip_path(self.patch)
#if norm is None and shape is None:
# im.set_clim(vmin, vmax)
if vmin is not None or vmax is not None:
im.set_clim(vmin, vmax)
else:
im.autoscale_None()
im.set_url(url)
Gellule Xg wrote:
This is a bug report for matplotlib version 0.99.1.1
The clip_path keyword of imshow() does not work when setting it to
(Path, Transform) for two reasons:
Hi, Thanks for the report. Do you have a simple test script that we can
use to see the problem and then fix it? We will then use this as the
basis to create a test function to make sure the issue never "crops" up
again.
-Andrew
Gellule Xg wrote:
This is a bug report for matplotlib version 0.99.1.1
The clip_path keyword of imshow() does not work when setting it to (Path, Transform) for two reasons:
1. On line 622 of artist.py, v is now the tuple (Path,Transform) and should be apply to func with apply(func,v). Hence the following suggested change:
for k,v in props.items():
func = getattr(self, 'set_'+k, None)
if func is None or not callable(func):
raise AttributeError('Unknown property %s'%k)
< func(v)
> if type(v) is tuple:
> apply(func,v)
else:
func(v)
apply is deprecated. The block above could be written in one line as
func(*tuple(v))
Eric
···
changed = True
2. On line 6278 of axes.py, im.set_clip_path(self.patch) should not overwrite the clip path if already set. Hence the following suggested change:
im.set_data(X)
im.set_alpha(alpha)
self._set_artist_props(im)
< im.set_clip_path(self.patch)
> if not im._clipon:
> im.set_clip_path(self.patch)
#if norm is None and shape is None:
# im.set_clim(vmin, vmax)
if vmin is not None or vmax is not None:
im.set_clim(vmin, vmax)
else:
im.autoscale_None()
im.set_url(url)
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This is a bug report for matplotlib version 0.99.1.1
The clip_path keyword of imshow() does not work when setting it to (Path, Transform) for two reasons:
Hi, Thanks for the report. Do you have a simple test script that we can
use to see the problem and then fix it? We will then use this as the
basis to create a test function to make sure the issue never "crops" up
again.
-Andrew
Hi Andrew,
Please try the following. It's a script that clips an NxN image based on its contour.
Thanks,
-Julien
import numpy
import pylab
#Create a NxN image
N=100
(x,y) = numpy.indices((N,N))
x -= N/2
y -= N/2
r = numpy.sqrt(x**2+y**2-x*y)
#Create a contour plot at N/4 and extract both the clip path and transform
c=pylab.contour(r,[N/4])
clipPath = c.collections[0].get_paths()[0]
clipTransform = c.collections[0].get_transform()
#Plot the image clipped by the contour
pylab.imshow(r, clip_path=(clipPath,clipTransform))
pylab.show()
Gellule Xg wrote:
This is a bug report for matplotlib version 0.99.1.1
The clip_path keyword of imshow() does not work when setting it to (Path, Transform) for two reasons:
Hi, Thanks for the report. Do you have a simple test script that we can
use to see the problem and then fix it? We will then use this as the
basis to create a test function to make sure the issue never "crops" up
again.
-Andrew
Hi Andrew,
Please try the following. It's a script that clips an NxN image based on its contour.
Thanks,
-Julien
Hi Julien,
I made a couple fixes to MPL 0.99 maintenance branch and then added a modified version your example in the tests. See matplotlib download | SourceForge.net
You should be able to use this approach to do what you were originally after.
My actual fixes to MPL were in r7866 and r7867. I had to take a slightly different approach than your suggestion. The approach I implemented based on your initial patch doesn't access private variables or change the way calling setters methods works.
-Andrew