Troubleshooting

Font installation

Latin Modern fonts are used by default (Latin Modern Math, Latin Modern Roman, Latin Modern Sans).

The fonts are stored in the plothist-utils package, which is a dependency of plothist. The fonts are automatically registered within matplotlib whenever plothist is imported in a script.

If a font is not correctly installed, you can try to install it manually. You can download the fonts from the following links:

• Latin Modern Math

• Latin Modern Roman

• Latin Modern Sans

After downloading the fonts, they should be placed in the folder ~/.fonts/ for Linux system and /Users/your_login_username/Library/Fonts for MacOS. If the folder doesn’t exist, you can create it by running in a terminal:

mkdir ~/.fonts # for Linux
mkdir /Users/your_login_username/Library/Fonts # for MacOS

Then you can move the downloaded fonts to the folder by running in a terminal:

For Linux:

mv path/to/latinmodern-math.otf ~/.fonts/
unzip -o path/to/latin-modern-roman.zip -d ~/.fonts/latin-modern-roman
unzip -o path/to/latin-modern-sans.zip -d ~/.fonts/latin-modern-sans

For MacOS:

mv path/to/latinmodern-math.otf /Users/your_login_username/Library/Fonts/
unzip -o path/to/latin-modern-roman.zip -d /Users/your_login_username/Library/Fonts/latin-modern-roman
unzip -o path/to/latin-modern-sans.zip -d /Users/your_login_username/Library/Fonts/latin-modern-sans

The last step is to delete the cache of matplotlib by running in a python console:

import matplotlib
import subprocess
from pathlib import PosixPath

cache_files = PosixPath(matplotlib.get_cachedir()).glob("fontlist-v???.json")
for cache_file in cache_files:
    subprocess.run(["rm", "-v", cache_file])