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Description
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Bug report
Bug summary
Matplotlib cannot seem to find any of its own fonts on my Scientific Linux system - I get all sorts of warnings like "Font family ['STIXNonUnicode'] not found" and "findfont: Could not match :family=DejaVu Sans:style=normal:variant=normal:weight=normal:stretch=normal:size=10.0. Returning /usr/share/fonts/dejavu/DejaVuSansMono-Oblique.ttf".
Code for reproduction
- A minimum code snippet required to reproduce the bug, also minimizing the number of dependencies required
#!/usr/bin/env python
import matplotlib
matplotlib.use('Agg')
from matplotlib import pyplot as plt
import numpy as np
if __name__ == '__main__':
x = np.linspace(0.0, 5.0, 100)
y = np.cos(2*np.pi*x) * np.exp(-x)
plt.plot(x, y, 'k')
plt.title('Damped exponential decay')
#plt.text(2, 0.65, r'$\cos(2 \pi t) \exp(-t)$', fontname='DejaVu Sans')
plt.text(2, 0.65, r'$\cos(2 \pi t) \exp(-t)$')
plt.xlabel('time (s)')
plt.ylabel('voltage (mV)')
plt.savefig('output.png')Actual outcome
- The output produced by the above code, which may be a screenshot, console output, etc.
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1297: UserWarning: findfont: Font family ['sans-serif'] not found. Falling back to DejaVu Sans
(prop.get_family(), self.defaultFamily[fontext]))
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1307: UserWarning: findfont: Could not match :family=DejaVu Sans:style=normal:variant=normal:weight=400:stretch=normal:size=10.0. Returning /usr/share/fonts/dejavu/DejaVuSansMono-Oblique.ttf
UserWarning)
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1297: UserWarning: findfont: Font family ['STIXGeneral'] not found. Falling back to DejaVu Sans
(prop.get_family(), self.defaultFamily[fontext]))
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1307: UserWarning: findfont: Could not match :family=DejaVu Sans:style=normal:variant=normal:weight=normal:stretch=normal:size=10.0. Returning /usr/share/fonts/dejavu/DejaVuSansMono-Oblique.ttf
UserWarning)
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1307: UserWarning: findfont: Could not match :family=DejaVu Sans:style=italic:variant=normal:weight=normal:stretch=normal:size=10.0. Returning /usr/share/fonts/dejavu/DejaVuSansMono-Oblique.ttf
UserWarning)
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1307: UserWarning: findfont: Could not match :family=DejaVu Sans:style=normal:variant=normal:weight=700:stretch=normal:size=10.0. Returning /usr/share/fonts/dejavu/DejaVuSansMono-Oblique.ttf
UserWarning)
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1297: UserWarning: findfont: Font family ['STIXNonUnicode'] not found. Falling back to DejaVu Sans
(prop.get_family(), self.defaultFamily[fontext]))
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1297: UserWarning: findfont: Font family ['STIXSizeOneSym'] not found. Falling back to DejaVu Sans
(prop.get_family(), self.defaultFamily[fontext]))
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1297: UserWarning: findfont: Font family ['STIXSizeTwoSym'] not found. Falling back to DejaVu Sans
(prop.get_family(), self.defaultFamily[fontext]))
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1297: UserWarning: findfont: Font family ['STIXSizeThreeSym'] not found. Falling back to DejaVu Sans
(prop.get_family(), self.defaultFamily[fontext]))
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1297: UserWarning: findfont: Font family ['STIXSizeFourSym'] not found. Falling back to DejaVu Sans
(prop.get_family(), self.defaultFamily[fontext]))
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1297: UserWarning: findfont: Font family ['STIXSizeFiveSym'] not found. Falling back to DejaVu Sans
(prop.get_family(), self.defaultFamily[fontext]))
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1297: UserWarning: findfont: Font family ['cmsy10'] not found. Falling back to DejaVu Sans
(prop.get_family(), self.defaultFamily[fontext]))
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1297: UserWarning: findfont: Font family ['cmr10'] not found. Falling back to DejaVu Sans
(prop.get_family(), self.defaultFamily[fontext]))
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1297: UserWarning: findfont: Font family ['cmtt10'] not found. Falling back to DejaVu Sans
(prop.get_family(), self.defaultFamily[fontext]))
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1297: UserWarning: findfont: Font family ['cmmi10'] not found. Falling back to DejaVu Sans
(prop.get_family(), self.defaultFamily[fontext]))
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1297: UserWarning: findfont: Font family ['cmb10'] not found. Falling back to DejaVu Sans
(prop.get_family(), self.defaultFamily[fontext]))
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1297: UserWarning: findfont: Font family ['cmss10'] not found. Falling back to DejaVu Sans
(prop.get_family(), self.defaultFamily[fontext]))
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1297: UserWarning: findfont: Font family ['cmex10'] not found. Falling back to DejaVu Sans
(prop.get_family(), self.defaultFamily[fontext]))
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1297: UserWarning: findfont: Font family ['DejaVu Sans Display'] not found. Falling back to DejaVu Sans
(prop.get_family(), self.defaultFamily[fontext]))
/home/pager/miniconda/envs/pager/lib/python3.6/site-packages/matplotlib/font_manager.py:1307: UserWarning: findfont: Could not match :family=DejaVu Sans:style=normal:variant=normal:weight=400:stretch=normal:size=12.0. Returning /usr/share/fonts/dejavu/DejaVuSansMono-Oblique.ttf
UserWarning)
Expected outcome
On my Mac, there are no warnings.
Matplotlib version
matplotlib.version => '2.0.0'
Python 3.6.1 | packaged by conda-forge | (default, Mar 23 2017, 21:05:12)
Linux localhost 3.10.0-514.10.2.el7.x86_64 #1 SMP Thu Mar 2 11:21:24 CST 2017 x86_64 x86_64 x86_64 GNU/Linux
Scientific Linux release 7.3 (Nitrogen)
Python and matplotlib were both installed using conda from conda-forge.
Also, I have made NO customizations in any matplotlibrc files, and there are no files under ~/.config/matplotlib.
The actual problem caused by all of this is of course in a much more complicated application, where a map I'm making has the wrong font (italicized, at that) in it when created on Linux.
Incidentally, I could really use a workaround, as I was hoping to deploy some code on Linux this week. Is there a way to tell matplotlib (perhaps in a matplotlibrc file) where to find the true type fonts that are included with the distribution?
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