.. note::
    :class: sphx-glr-download-link-note

    Click :ref:`here <sphx_glr_download_gallery_ticks_and_spines_custom_ticker1.py>` to download the full example code
.. rst-class:: sphx-glr-example-title

.. _sphx_glr_gallery_ticks_and_spines_custom_ticker1.py:


==============
Custom Ticker1
==============

The new ticker code was designed to explicitly support user customized
ticking. The documentation of :mod:`matplotlib.ticker` details this
process.  That code defines a lot of preset tickers but was primarily
designed to be user extensible.

In this example a user defined function is used to format the ticks in
millions of dollars on the y axis.




.. image:: /gallery/ticks_and_spines/images/sphx_glr_custom_ticker1_001.png
    :class: sphx-glr-single-img





.. code-block:: python

    from matplotlib.ticker import FuncFormatter
    import matplotlib.pyplot as plt
    import numpy as np

    x = np.arange(4)
    money = [1.5e5, 2.5e6, 5.5e6, 2.0e7]


    def millions(x, pos):
        'The two args are the value and tick position'
        return '$%1.1fM' % (x * 1e-6)


    formatter = FuncFormatter(millions)

    fig, ax = plt.subplots()
    ax.yaxis.set_major_formatter(formatter)
    plt.bar(x, money)
    plt.xticks(x, ('Bill', 'Fred', 'Mary', 'Sue'))
    plt.show()


.. _sphx_glr_download_gallery_ticks_and_spines_custom_ticker1.py:


.. only :: html

 .. container:: sphx-glr-footer
    :class: sphx-glr-footer-example



  .. container:: sphx-glr-download

     :download:`Download Python source code: custom_ticker1.py <custom_ticker1.py>`



  .. container:: sphx-glr-download

     :download:`Download Jupyter notebook: custom_ticker1.ipynb <custom_ticker1.ipynb>`


.. only:: html

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

    Keywords: matplotlib code example, codex, python plot, pyplot
    `Gallery generated by Sphinx-Gallery
    <https://sphinx-gallery.readthedocs.io>`_
