.. _sphx_glr_gallery_units_bar_demo2.py:


===================
Bar demo with units
===================

A plot using a variety of centimetre and inch conversions. This example shows
how default unit introspection works (ax1), how various keywords can be used to
set the x and y units to override the defaults (ax2, ax3, ax4) and how one can
set the xlimits using scalars (ax3, current units assumed) or units
(conversions applied to get the numbers to current units).

.. only:: builder_html

   This example requires :download:`basic_units.py <basic_units.py>`




.. image:: /gallery/units/images/sphx_glr_bar_demo2_001.png
    :align: center





.. code-block:: python

    import numpy as np
    from basic_units import cm, inch
    import matplotlib.pyplot as plt

    cms = cm * np.arange(0, 10, 2)
    bottom = 0 * cm
    width = 0.8 * cm

    fig, axs = plt.subplots(2, 2)

    axs[0, 0].bar(cms, cms, bottom=bottom)

    axs[0, 1].bar(cms, cms, bottom=bottom, width=width, xunits=cm, yunits=inch)

    axs[1, 0].bar(cms, cms, bottom=bottom, width=width, xunits=inch, yunits=cm)
    axs[1, 0].set_xlim(2, 6)  # scalars are interpreted in current units

    axs[1, 1].bar(cms, cms, bottom=bottom, width=width, xunits=inch, yunits=inch)
    axs[1, 1].set_xlim(2 * cm, 6 * cm)  # cm are converted to inches

    fig.tight_layout()
    plt.show()

**Total running time of the script:** ( 0 minutes  0.120 seconds)



.. only :: html

 .. container:: sphx-glr-footer


  .. container:: sphx-glr-download

     :download:`Download Python source code: bar_demo2.py <bar_demo2.py>`



  .. container:: sphx-glr-download

     :download:`Download Jupyter notebook: bar_demo2.ipynb <bar_demo2.ipynb>`


.. only:: html

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

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