.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "intro/matplotlib/auto_examples/options/plot_alpha.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

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

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

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

.. _sphx_glr_intro_matplotlib_auto_examples_options_plot_alpha.py:


Alpha: transparency
===================

This example demonstrates using alpha for transparency.

.. GENERATED FROM PYTHON SOURCE LINES 7-24



.. image-sg:: /intro/matplotlib/auto_examples/options/images/sphx_glr_plot_alpha_001.png
   :alt: plot alpha
   :srcset: /intro/matplotlib/auto_examples/options/images/sphx_glr_plot_alpha_001.png
   :class: sphx-glr-single-img





.. code-block:: default


    import matplotlib.pyplot as plt

    size = 256,16
    dpi = 72.0
    figsize= size[0] / float(dpi), size[1] / float(dpi)
    fig = plt.figure(figsize=figsize, dpi=dpi)
    fig.patch.set_alpha(0)
    plt.axes([0, 0.1, 1, .8], frameon=False)

    for i in range(1, 11):
        plt.axvline(i, linewidth=1, color='blue', alpha= .25 + .75 * i / 10.)

    plt.xlim(0, 11)
    plt.xticks([])
    plt.yticks([])
    plt.show()


.. rst-class:: sphx-glr-timing

   **Total running time of the script:** ( 0 minutes  0.019 seconds)


.. _sphx_glr_download_intro_matplotlib_auto_examples_options_plot_alpha.py:

.. only:: html

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




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

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

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

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


.. only:: html

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

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