python system_error ai_generated true

RuntimeError: Failed to process string with tex because of missing font metrics.

ID: python/matplotlib-pdf-font-embedding-error

Also available as: JSON · Markdown · 中文
80%Fix Rate
86%Confidence
0Evidence
2024-07-01First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.8 active — — —
3.9 active — — —

Root Cause

Using LaTeX text rendering (usetex=True) without a complete LaTeX installation or missing required fonts.

generic

中文

使用LaTeX文本渲染(usetex=True)时，LaTeX安装不完整或缺少所需字体。

Workarounds

  1. 90% success Install a full LaTeX distribution (e.g., TeX Live or MiKTeX) 
    sudo apt-get install texlive-latex-base texlive-fonts-recommended
  2. 95% success Disable usetex and use Matplotlib's built-in math rendering 
    plt.rcParams['text.usetex'] = False

Dead Ends

Common approaches that don't work:

  1. Installing only matplotlib with pip 95% fail

    LaTeX is a separate system; pip cannot install it.

  2. Setting usetex=False but still getting error 80% fail

    If usetex is False, this error should not occur; the setting might not have been reset.