

.. _sphx_glr_gallery_text_labels_and_annotations_tex_demo.py:


=================================
Rendering math equation using TeX
=================================

You can use TeX to render all of your matplotlib text if the rc
parameter text.usetex is set.  This works currently on the agg and ps
backends, and requires that you have tex and the other dependencies
described at http://matplotlib.org/users/usetex.html
properly installed on your system.  The first time you run a script
you will see a lot of output from tex and associated tools.  The next
time, the run may be silent, as a lot of the information is cached.

Notice how the label for the y axis is provided using unicode!





.. image:: /gallery/text_labels_and_annotations/images/sphx_glr_tex_demo_001.png
    :align: center





.. code-block:: python

    from __future__ import unicode_literals
    import numpy as np
    import matplotlib
    matplotlib.rcParams['text.usetex'] = True
    matplotlib.rcParams['text.latex.unicode'] = True
    import matplotlib.pyplot as plt


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

    fig, ax = plt.subplots(figsize=(6, 4), tight_layout=True)
    ax.plot(t, s)

    ax.set_xlabel(r'\textbf{time (s)}')
    ax.set_ylabel('\\textit{Velocity (\N{DEGREE SIGN}/sec)}', fontsize=16)
    ax.set_title(r'\TeX\ is Number $\displaystyle\sum_{n=1}^\infty'
                 r'\frac{-e^{i\pi}}{2^n}$!', fontsize=16, color='r')
    plt.show()

**Total running time of the script:** ( 0 minutes  0.025 seconds)



.. container:: sphx-glr-footer


  .. container:: sphx-glr-download

     :download:`Download Python source code: tex_demo.py <tex_demo.py>`



  .. container:: sphx-glr-download

     :download:`Download Jupyter notebook: tex_demo.ipynb <tex_demo.ipynb>`

.. rst-class:: sphx-glr-signature

    `Generated by Sphinx-Gallery <https://sphinx-gallery.readthedocs.io>`_
