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

.. only:: html

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

        Click :ref:`here <sphx_glr_download_auto_examples_plot_colors.py>`
        to download the full example code

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

.. _sphx_glr_auto_examples_plot_colors.py:


Colormaps alter your perception
===============================

Here I plot the function

.. math:: f(x, y) = \sin(x) + \cos(y)

with different colormaps.

.. GENERATED FROM PYTHON SOURCE LINES 13-35

.. code-block:: default


    import numpy as np
    import matplotlib.pyplot as plt

    x = np.linspace(-np.pi, np.pi, 300)
    xx, yy = np.meshgrid(x, x)
    z = np.cos(xx) + np.cos(yy)

    plt.figure()
    plt.imshow(z)

    plt.figure()
    plt.imshow(z, cmap=plt.cm.get_cmap('hot'))

    plt.figure()
    plt.imshow(z, cmap=plt.cm.get_cmap('Spectral'),
               interpolation='none')

    # Not needed for the Gallery.
    # Only for direct execution
    plt.show()




.. rst-class:: sphx-glr-horizontal


    *

      .. image:: /auto_examples/images/sphx_glr_plot_colors_001.png
          :alt: plot colors
          :class: sphx-glr-multi-img

    *

      .. image:: /auto_examples/images/sphx_glr_plot_colors_002.png
          :alt: plot colors
          :class: sphx-glr-multi-img

    *

      .. image:: /auto_examples/images/sphx_glr_plot_colors_003.png
          :alt: plot colors
          :class: sphx-glr-multi-img





.. GENERATED FROM PYTHON SOURCE LINES 36-39

You can define blocks in your source code
with interleaving prose.


.. GENERATED FROM PYTHON SOURCE LINES 39-42

.. code-block:: default


    print(("This writes to stdout and will be",
          " displayed in the HTML file"))




.. rst-class:: sphx-glr-script-out

 Out:

 .. code-block:: none

    ('This writes to stdout and will be', ' displayed in the HTML file')





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

   **Total running time of the script:** ( 0 minutes  0.285 seconds)


.. _sphx_glr_download_auto_examples_plot_colors.py:


.. only :: html

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



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

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



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

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


.. only:: html

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

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