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DOC: usetex and maths font #11718

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DOC: usetex and maths font #11718

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43 changes: 43 additions & 0 deletions examples/text_labels_and_annotations/usetex_maths_font.py
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Original file line number Diff line number Diff line change
@@ -0,0 +1,43 @@
"""
============================
TeX and maths font selection
============================

Setting the text font in TeX does not (by default) change the maths font.
It is recommended to use ``text.latex.preamble`` to set the font to ensure
that both text and maths use the desired font settings.
"""

import numpy as np
import matplotlib as mpl
import matplotlib.pyplot as plt

x = np.linspace(0.0, 1.0, 100)
y = np.cos(4 * np.pi * x) + 2

with mpl.rc_context(rc={'text.usetex': True,
'font.family': 'sans-serif',
'font.sans-serif': 'DejaVu Sans'}):
fig1, ax1 = plt.subplots(figsize=(6, 4), tight_layout=True)
ax1.plot(x, y)
ax1.set_title(r"Using `font.family', `font.sans-serif' params:"
'\n'+r'$\displaystyle\sum_{n=1}^\infty'
r'\frac{-e^{i\pi}}{2^n}$!'
r'$\leftarrow$ serif font (also in tick labels).',
fontsize=20, color='r')
ax1.tick_params(axis='both', labelsize=20)
plt.savefig('usetex_maths_DejaVu-Sans.png')


with mpl.rc_context(rc={'text.usetex': True,
'text.latex.preamble': r'\usepackage{cmbright}'}):

fig2, ax2 = plt.subplots(figsize=(6, 4), tight_layout=True)
ax2.plot(x, y)
ax2.set_title(r'Using \rm{\textbackslash usepackage\{cmbright\}}:'
'\n'+r'$\displaystyle\sum_{n=1}^\infty'
r'\frac{-e^{i\pi}}{2^n}$!'
r'$\leftarrow$ sans-serif font (also in tick labels).',
fontsize=20, color='r')
ax2.tick_params(axis='both', labelsize=20)
plt.savefig('usetex_maths_cmbright.png')
19 changes: 19 additions & 0 deletions tutorials/text/usetex.py
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Expand Up @@ -72,6 +72,25 @@
Therefore, these characters will behave differently depending on
the rcParam ``text.usetex`` flag.

.. _usetex-mathsfont:

text and maths font selection using tex
=======================================

Setting the text font in TeX does not (by default) change the maths font.
It is recommended to use ``text.latex.preamble`` to set the font to ensure
that both text and maths use the desired font settings when ``text.usetex : True``.

.. figure:: ../../gallery/text_labels_and_annotations/images/usetex_maths_DejaVu-Sans.png
:target: ../../gallery/text_labels_and_annotations/usetex_maths_font.html
:align: center
:scale: 50

.. figure:: ../../gallery/text_labels_and_annotations/images/usetex_maths_cmbright.png
:target: ../../gallery/text_labels_and_annotations/usetex_maths_font.html
:align: center
:scale: 50

.. _usetex-unicode:

usetex with unicode
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