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savefig PDF removing the negative sign from yticklabels #7963

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Auerilas opened this issue Jan 27, 2017 · 1 comment
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savefig PDF removing the negative sign from yticklabels #7963

Auerilas opened this issue Jan 27, 2017 · 1 comment

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@Auerilas
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Auerilas commented Jan 27, 2017 •
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Bug report

Bug summary

In matplotlib 2.0, when using plt.savefig() as a pdf, the negative sign is removed from the y tick labels.

import matplotlib.pyplot as plt

plt.plot([-1, 2], [-1, 2])
plt.savefig('~/Desktop/test.png')
plt.savefig('~/Desktop/test.pdf')

test

test.pdf

Matplotlib 2.0.0
Python 3.5.2, Linux Mint 18.1
Installed matplotlib from conda, then most recently did conda update --all to upgrade to 2.0.0

Actually, going back and look it appears that this issue is not specific to Matplotlib 2.0.0, but was occurring before that as well.

Actually #2, this appears to be a seaborn issue as it only occurs after I import seaborn. I'll post an issue there.
@Auerilas
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Just in case anyone finds this thread with a similar issue: This is an issue on Linux, attempting to use Arial fonts and PDF backends. They don't play very well, and seaborn modifies rcparams to use Arial by default. I was able to resolve the issue by forcing seaborn to use DejaVu Sans, either by

sns.set(font='DejaVu Sans')

or by directly modifying the rcmod.py file within the seaborn library, changing the line that modifies the font families in the set() function:


"font.sans-serif": ["DejaVu Sans", "Arial", "Liberation Sans",
                                "Bitstream Vera Sans", "sans-serif"],

That last bit worked for me and I no longer have to change the font every time.

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@Auerilas