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

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

.. _sphx_glr_gallery_subplots_axes_and_figures_axhspan_demo.py:


============
axhspan Demo
============

Create lines or rectangles that span the axes in either the horizontal or
vertical direction.




.. image:: /gallery/subplots_axes_and_figures/images/sphx_glr_axhspan_demo_001.png
    :class: sphx-glr-single-img





.. code-block:: python

    import numpy as np
    import matplotlib.pyplot as plt

    t = np.arange(-1, 2, .01)
    s = np.sin(2 * np.pi * t)

    plt.plot(t, s)
    # Draw a thick red hline at y=0 that spans the xrange
    plt.axhline(linewidth=8, color='#d62728')

    # Draw a default hline at y=1 that spans the xrange
    plt.axhline(y=1)

    # Draw a default vline at x=1 that spans the yrange
    plt.axvline(x=1)

    # Draw a thick blue vline at x=0 that spans the upper quadrant of the yrange
    plt.axvline(x=0, ymin=0.75, linewidth=8, color='#1f77b4')

    # Draw a default hline at y=.5 that spans the middle half of the axes
    plt.axhline(y=.5, xmin=0.25, xmax=0.75)

    plt.axhspan(0.25, 0.75, facecolor='0.5', alpha=0.5)

    plt.axvspan(1.25, 1.55, facecolor='#2ca02c', alpha=0.5)

    plt.axis([-1, 2, -1, 2])

    plt.show()


.. _sphx_glr_download_gallery_subplots_axes_and_figures_axhspan_demo.py:


.. only :: html

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



  .. container:: sphx-glr-download

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



  .. container:: sphx-glr-download

     :download:`Download Jupyter notebook: axhspan_demo.ipynb <axhspan_demo.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>`_
