Using a ttf font file in Matplotlib#

Although it is usually not a good idea to explicitly point to a single ttf file for a font instance, you can do so by passing a pathlib.Path instance as the font parameter. Note that passing paths as strs is intentionally not supported, but you can simply wrap strs in pathlib.Paths as needed.

Here, we use the Computer Modern roman font (cmr10) shipped with Matplotlib.

For a more flexible solution, see Configuring the font family and Fonts demo (object-oriented style).

from pathlib import Path

import matplotlib as mpl
import matplotlib.pyplot as plt

fig, ax = plt.subplots()

fpath = Path(mpl.get_data_path(), "fonts/ttf/cmr10.ttf")
ax.set_title(f'This is a special font: {}', font=fpath)
ax.set_xlabel('This is the default font')
This is a special font: cmr10.ttf


The use of the following functions, methods, classes and modules is shown in this example:

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