

.. _sphx_glr_gallery_pylab_examples_barcode_demo.py:


============
Barcode Demo
============





.. image:: /gallery/pylab_examples/images/sphx_glr_barcode_demo_001.png
    :align: center





.. code-block:: python

    import matplotlib.pyplot as plt
    import numpy as np

    # Fixing random state for reproducibility
    np.random.seed(19680801)


    # the bar
    x = np.where(np.random.rand(500) > 0.7, 1.0, 0.0)

    axprops = dict(xticks=[], yticks=[])
    barprops = dict(aspect='auto', cmap=plt.cm.binary, interpolation='nearest')

    fig = plt.figure()

    # a vertical barcode -- this is broken at present
    ax = fig.add_axes([0.1, 0.3, 0.1, 0.6], **axprops)
    ax.imshow(x.reshape((-1, 1)), **barprops)

    # a horizontal barcode
    ax = fig.add_axes([0.3, 0.1, 0.6, 0.1], **axprops)
    ax.imshow(x.reshape((1, -1)), **barprops)


    plt.show()

**Total running time of the script:** ( 0 minutes  0.043 seconds)



.. container:: sphx-glr-footer


  .. container:: sphx-glr-download

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



  .. container:: sphx-glr-download

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

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

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