On 05/16/2012 11:15 AM, Gökhan Sever wrote:
Hmm, how can I test this change the easiest way?
Clone the master and replace with your changes? or can I directly
clone your experimental branch?
You can either clone my fork and then checkout the branch with the change:
git checkout clipping-bug
Or, in an existing clone of the main repository, add my fork as a remote
git remote add mdboom git://github.com/mdboom/matplotlib.git
git fetch mdboom
git checkout mdboom/clipping-bug
Or, since the diff is only a few lines in path_converters.h, you could
just apply it manually.
Be sure to remove your build directory before rebuilding: distutils
doesn't pick up header file changes.
Mike
On Wed, May 16, 2012 at 8:52 AM, Michael Droettboom <md...@stsci.edu
<mailto:md...@stsci.edu>> wrote:
I have a proposed solution here:
https://github.com/matplotlib/matplotlib/pull/872
Git bisect found that the first commit where this happens was here:
https://github.com/matplotlib/matplotlib/commit/4cd75cdf
This is the script I used to reproduce -- I assume it's the same
thing you're seeing:
from matplotlib import pyplot as plt
import numpy as np
x = np.linspace(0, 3.14 * 2, 3000)
y = np.sin(x)
x[::100] = np.nan
plt.plot(x, y)
plt.ylim(-0.25, 0.25)
plt.show()
Mike
On 05/16/2012 10:44 AM, Gökhan Sever wrote:
Hi Mike,
Could you inform me about your progress? I can test your sample
script. I was thinking to test from v1.1.x branch downwards to
spot the source of the issue, but I just don't know how to clone
at particular commit in git.
Thank you.
On Wed, May 16, 2012 at 6:51 AM, Michael Droettboom
<md...@stsci.edu <mailto:md...@stsci.edu>> wrote:
Nevermind -- I've got something to reproduce this and am
looking into it now.
Mike
On 05/16/2012 08:13 AM, Michael Droettboom wrote:
On 05/15/2012 07:57 PM, Gökhan Sever wrote:
Hello,
I have encountered a weird plotting issue recently using a
recent mpl clone. See the linked pdfs for better
demonstration of the issue:
http://atmos.uwyo.edu/~gsever/data/vocals_RF04_NU05_newmpl.pdf
<http://atmos.uwyo.edu/%7Egsever/data/vocals_RF04_NU05_newmpl.pdf>
http://atmos.uwyo.edu/~gsever/data/vocals_RF04_NU05_oldmpl.pdf
<http://atmos.uwyo.edu/%7Egsever/data/vocals_RF04_NU05_oldmpl.pdf>
newmpl file is created using the latest master branch
(cloned and setup today)
oldmpl is created using mpl v1.1.0
(https://github.com/downloads/matplotlib/matplotlib/matplotlib-1.1.0.tar.gz)
Scroll down to page 4 in each file and you will see the
wrong plotted behavior of alwp_lcl (black line) variable on
newmpl file comparing to the correct version that is shown
on oldmpl.
I was trying to figure out a way to correct this and I
raised y-axis max to 2400 and then the line looks fine.
However I have other data that show similar
wrong behaviors, so I decided to try earlier mpl versions
since I know that those plots were looking correct earlier
(at least a few months back). Trying v1.1.x branch gave me
the same results. Note that these data contain "nans". Are
nan handling changed in recent mpl code or the way the data
is plotted out of margins? I can't reproduce this
with synthetic data.
There have been changes to that code lately. Is there any
way you can pack up a small script and data to reproduce
this? Then I can poke at it and see what I find (it would
also make a good regression test).
Mike
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