.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "gallery/ticks/custom_ticker1.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. meta::
        :keywords: codex

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

        Click :ref:`here <sphx_glr_download_gallery_ticks_custom_ticker1.py>`
        to download the full example code

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_gallery_ticks_custom_ticker1.py:


=============
Custom Ticker
=============

The :mod:`matplotlib.ticker` module defines many preset tickers, but was
primarily designed for extensibility, i.e., to support user customized ticking.

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

.. GENERATED FROM PYTHON SOURCE LINES 12-28

.. code-block:: default


    import matplotlib.pyplot as plt


    def millions(x, pos):
        """The two arguments are the value and tick position."""
        return '${:1.1f}M'.format(x*1e-6)


    fig, ax = plt.subplots()
    # set_major_formatter internally creates a FuncFormatter from the callable.
    ax.yaxis.set_major_formatter(millions)
    money = [1.5e5, 2.5e6, 5.5e6, 2.0e7]
    ax.bar(['Bill', 'Fred', 'Mary', 'Sue'], money)
    plt.show()




.. image-sg:: /gallery/ticks/images/sphx_glr_custom_ticker1_001.png
   :alt: custom ticker1
   :srcset: /gallery/ticks/images/sphx_glr_custom_ticker1_001.png, /gallery/ticks/images/sphx_glr_custom_ticker1_001_2_0x.png 2.0x
   :class: sphx-glr-single-img





.. GENERATED FROM PYTHON SOURCE LINES 29-35

.. admonition:: References

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

   - `matplotlib.axis.Axis.set_major_formatter`


.. _sphx_glr_download_gallery_ticks_custom_ticker1.py:

.. only:: html

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


    .. container:: sphx-glr-download sphx-glr-download-python

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

    .. container:: sphx-glr-download sphx-glr-download-jupyter

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


.. only:: html

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

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_