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Describe possible need for loading the 'lmodern' package when using PGF files #20708

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Merged
merged 6 commits into from
Oct 16, 2021
Merged

Describe possible need for loading the 'lmodern' package when using PGF files #20708

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a104a01
Indicate a possible 'lmodern' requirement
uihsnv Jul 21, 2021
a8041fa
Describe the font issue
uihsnv Jul 21, 2021
77fb127
Specify that the issue is with bold-face Greek letters
uihsnv Jul 22, 2021
92f0187
DOC/STY: remove white space and hedge language
tacaswell Oct 13, 2021
3712476
DOC: fix typo
tacaswell Oct 13, 2021
eccdda1
DOC: edits from review
tacaswell Oct 15, 2021
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4 changes: 4 additions & 0 deletions lib/matplotlib/backends/backend_pgf.py
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Expand Up @@ -777,6 +777,10 @@ def _print_pgf_to_fh(self, fh, *, bbox_inches_restore=None):
%% Make sure the required packages are loaded in your preamble
%% \\usepackage{pgf}
%%
%% Also ensure that all the required font packages are loaded; for instance,
%% the lmodern package is sometimes necessary when using math font.
%% \\usepackage{lmodern}
%%
%% Figures using additional raster images can only be included by \\input if
%% they are in the same directory as the main LaTeX file. For loading figures
%% from other directories you can use the `import` package
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6 changes: 6 additions & 0 deletions tutorials/text/pgf.py
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Expand Up @@ -187,6 +187,12 @@
using either the ``rasterized=True`` keyword, or ``.set_rasterized(True)`` as
per :doc:`this example </gallery/misc/rasterization_demo>`.

* Various math fonts are compiled and rendered only if corresponding font
packages are loaded. Specifically, when using ``\mathbf{}`` on Greek letters,
the default computer modern font may not contain them, in which case the
letter is not rendered. In such scenarios, the ``lmodern`` package should be
loaded.

* If you still need help, please see :ref:`reporting-problems`

.. _LaTeX: http://www.tug.org
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