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Streamplot result python version dependent #1194

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pelson opened this issue Sep 2, 2012 · 3 comments
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Streamplot result python version dependent #1194

pelson opened this issue Sep 2, 2012 · 3 comments
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status: confirmed bug

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@pelson
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pelson commented Sep 2, 2012

Both are correct, but I get different lines when running the following code on python2.7 vs python3.2:

import matplotlib.pyplot as plt
import numpy as np

x, y = np.arange(8), np.arange(10)
data = u = v = np.linspace(0, 10, 80).reshape(10, 8)
v = np.sin(v * -0.6)
plt.streamplot(x, y, u, v)
plt.savefig('sample.png')

Obviously this makes testing streamplotting quite tricky and would be nice if we could make the results consistent.
This was referenced Sep 2, 2012
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@pelson
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pelson commented Sep 3, 2012

@tonysyu any ideas where to start looking?

@pelson
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pelson commented Sep 3, 2012

Looks like it could be division issues. from __future__ import division seems to solve.

@pelson pelson closed this as completed in 64e35f2 Sep 3, 2012
pelson added a commit that referenced this issue Sep 3, 2012
@pelson
Merge pull request #1197 from pelson/streamline_consistency
21adc0a 
Handled future division changes for python3 (fixes #1194).
@tonysyu
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tonysyu commented Sep 3, 2012

Looks like you asked, debugged, and solved the problem before I even saw the issue. Thanks ;)

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