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

.. only:: html

    .. meta::
        :keywords: codex

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

        :ref:`Go to the end <sphx_glr_download_gallery_text_labels_and_annotations_engineering_formatter.py>`
        to download the full example code.

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

.. _sphx_glr_gallery_text_labels_and_annotations_engineering_formatter.py:


=======================================
Format ticks using engineering notation
=======================================

Use of the engineering Formatter.

.. GENERATED FROM PYTHON SOURCE LINES 8-45



.. image-sg:: /gallery/text_labels_and_annotations/images/sphx_glr_engineering_formatter_001.png
   :alt: Full unit ticklabels, w/ default precision & space separator, SI-prefix only ticklabels, 1-digit precision & thin space separator
   :srcset: /gallery/text_labels_and_annotations/images/sphx_glr_engineering_formatter_001.png, /gallery/text_labels_and_annotations/images/sphx_glr_engineering_formatter_001_2_00x.png 2.00x
   :class: sphx-glr-single-img





.. code-block:: Python


    import matplotlib.pyplot as plt
    import numpy as np

    from matplotlib.ticker import EngFormatter

    # Fixing random state for reproducibility
    prng = np.random.RandomState(19680801)

    # Create artificial data to plot.
    # The x data span over several decades to demonstrate several SI prefixes.
    xs = np.logspace(1, 9, 100)
    ys = (0.8 + 0.4 * prng.uniform(size=100)) * np.log10(xs)**2

    # Figure width is doubled (2*6.4) to display nicely 2 subplots side by side.
    fig, (ax0, ax1) = plt.subplots(nrows=2, figsize=(7, 9.6))
    for ax in (ax0, ax1):
        ax.set_xscale('log')

    # Demo of the default settings, with a user-defined unit label.
    ax0.set_title('Full unit ticklabels, w/ default precision & space separator')
    formatter0 = EngFormatter(unit='Hz')
    ax0.xaxis.set_major_formatter(formatter0)
    ax0.plot(xs, ys)
    ax0.set_xlabel('Frequency')

    # Demo of the options `places` (number of digit after decimal point) and
    # `sep` (separator between the number and the prefix/unit).
    ax1.set_title('SI-prefix only ticklabels, 1-digit precision & '
                  'thin space separator')
    formatter1 = EngFormatter(places=1, sep="\N{THIN SPACE}")  # U+2009
    ax1.xaxis.set_major_formatter(formatter1)
    ax1.plot(xs, ys)
    ax1.set_xlabel('Frequency [Hz]')

    plt.tight_layout()
    plt.show()


.. _sphx_glr_download_gallery_text_labels_and_annotations_engineering_formatter.py:

.. only:: html

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

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

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

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

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

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: engineering_formatter.zip <engineering_formatter.zip>`


.. only:: html

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

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