René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Matplotlib cannot find default matplotlib fonts on Scientific linux","articleBody":"To help us understand and resolve your issue, please fill out the form to the best of your ability. You can feel free to delete the sections that do not apply.\r\n\r\n### Bug report\r\n\r\n**Bug summary**\r\n\r\nMatplotlib 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\".\r\n\r\n**Code for reproduction**\r\n\r\n- A minimum code snippet required to reproduce the bug, also minimizing the number of dependencies required\r\n\r\n```python\r\n#!/usr/bin/env python\r\n\r\nimport matplotlib\r\nmatplotlib.use('Agg')\r\n\r\nfrom matplotlib import pyplot as plt\r\nimport numpy as np\r\n\r\n\r\nif __name__ == '__main__':\r\n    x = np.linspace(0.0, 5.0, 100)\r\n    y = np.cos(2*np.pi*x) * np.exp(-x)\r\n    \r\n    plt.plot(x, y, 'k')\r\n    plt.title('Damped exponential decay')\r\n    #plt.text(2, 0.65, r'$\\cos(2 \\pi t) \\exp(-t)$', fontname='DejaVu Sans')\r\n    plt.text(2, 0.65, r'$\\cos(2 \\pi t) \\exp(-t)$') \r\n    plt.xlabel('time (s)')\r\n    plt.ylabel('voltage (mV)')\r\n    plt.savefig('output.png')\r\n```\r\n\r\n**Actual outcome**\r\n\r\n- The output produced by the above code, which may be a screenshot, console output, etc.\r\n\r\n```\r\n/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\r\n  (prop.get_family(), self.defaultFamily[fontext]))\r\n/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\r\n  UserWarning)\r\n/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\r\n  (prop.get_family(), self.defaultFamily[fontext]))\r\n/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\r\n  UserWarning)\r\n/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\r\n  UserWarning)\r\n/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\r\n  UserWarning)\r\n/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\r\n  (prop.get_family(), self.defaultFamily[fontext]))\r\n/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\r\n  (prop.get_family(), self.defaultFamily[fontext]))\r\n/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\r\n  (prop.get_family(), self.defaultFamily[fontext]))\r\n/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\r\n  (prop.get_family(), self.defaultFamily[fontext]))\r\n/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\r\n  (prop.get_family(), self.defaultFamily[fontext]))\r\n/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\r\n  (prop.get_family(), self.defaultFamily[fontext]))\r\n/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\r\n  (prop.get_family(), self.defaultFamily[fontext]))\r\n/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\r\n  (prop.get_family(), self.defaultFamily[fontext]))\r\n/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\r\n  (prop.get_family(), self.defaultFamily[fontext]))\r\n/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\r\n  (prop.get_family(), self.defaultFamily[fontext]))\r\n/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\r\n  (prop.get_family(), self.defaultFamily[fontext]))\r\n/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\r\n  (prop.get_family(), self.defaultFamily[fontext]))\r\n/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\r\n  (prop.get_family(), self.defaultFamily[fontext]))\r\n/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\r\n  (prop.get_family(), self.defaultFamily[fontext]))\r\n/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\r\n  UserWarning)\r\n\r\n```\r\n\r\n**Expected outcome**\r\nOn my Mac, there are no warnings.\r\n**Matplotlib version**\r\nmatplotlib.__version__ =\u003e '2.0.0'\r\n\r\nPython 3.6.1 | packaged by conda-forge | (default, Mar 23 2017, 21:05:12) \r\n\r\nLinux 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\r\n\r\nScientific Linux release 7.3 (Nitrogen)\r\n\r\nPython and matplotlib were both installed using conda from conda-forge.\r\n\r\nAlso, I have made NO customizations in any matplotlibrc files, and there are no files under ~/.config/matplotlib.\r\n\r\nThe 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.\r\n\r\nIncidentally, 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?\r\n\r\n\r\n","author":{"url":"https://github.com/mhearne-usgs","@type":"Person","name":"mhearne-usgs"},"datePublished":"2017-04-04T13:27:01.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/8427/matplotlib/issues/8427"}