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

.. only:: html

    .. meta::
        :keywords: codex

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

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

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

.. _sphx_glr_gallery_color_colormap_reference.py:


==================
Colormap reference
==================

Reference for colormaps included with Matplotlib.

A reversed version of each of these colormaps is available by appending
``_r`` to the name, as shown in :ref:`reverse-cmap`.

See :ref:`colormaps` for an in-depth discussion about
colormaps, including colorblind-friendliness, and
:ref:`colormap-manipulation` for a guide to creating
colormaps.

.. GENERATED FROM PYTHON SOURCE LINES 16-72

.. code-block:: Python


    import matplotlib.pyplot as plt
    import numpy as np

    cmaps = [('Perceptually Uniform Sequential', [
                'viridis', 'plasma', 'inferno', 'magma', 'cividis']),
             ('Sequential', [
                'Greys', 'Purples', 'Blues', 'Greens', 'Oranges', 'Reds',
                'YlOrBr', 'YlOrRd', 'OrRd', 'PuRd', 'RdPu', 'BuPu',
                'GnBu', 'PuBu', 'YlGnBu', 'PuBuGn', 'BuGn', 'YlGn']),
             ('Sequential (2)', [
                'binary', 'gist_yarg', 'gist_gray', 'gray', 'bone', 'pink',
                'spring', 'summer', 'autumn', 'winter', 'cool', 'Wistia',
                'hot', 'afmhot', 'gist_heat', 'copper']),
             ('Diverging', [
                'PiYG', 'PRGn', 'BrBG', 'PuOr', 'RdGy', 'RdBu',
                'RdYlBu', 'RdYlGn', 'Spectral', 'coolwarm', 'bwr', 'seismic',
                'berlin', 'managua', 'vanimo']),
             ('Cyclic', ['twilight', 'twilight_shifted', 'hsv']),
             ('Qualitative', [
                'Pastel1', 'Pastel2', 'Paired', 'Accent',
                'Dark2', 'Set1', 'Set2', 'Set3',
                'tab10', 'tab20', 'tab20b', 'tab20c']),
             ('Miscellaneous', [
                'flag', 'prism', 'ocean', 'gist_earth', 'terrain', 'gist_stern',
                'gnuplot', 'gnuplot2', 'CMRmap', 'cubehelix', 'brg',
                'gist_rainbow', 'rainbow', 'jet', 'turbo', 'nipy_spectral',
                'gist_ncar'])]

    gradient = np.linspace(0, 1, 256)
    gradient = np.vstack((gradient, gradient))


    def plot_color_gradients(cmap_category, cmap_list):
        # Create figure and adjust figure height to number of colormaps
        nrows = len(cmap_list)
        figh = 0.35 + 0.15 + (nrows + (nrows-1)*0.1)*0.22
        fig, axs = plt.subplots(nrows=nrows, figsize=(6.4, figh))
        fig.subplots_adjust(top=1-.35/figh, bottom=.15/figh, left=0.2, right=0.99)

        axs[0].set_title(f"{cmap_category} colormaps", fontsize=14)

        for ax, cmap_name in zip(axs, cmap_list):
            ax.imshow(gradient, aspect='auto', cmap=cmap_name)
            ax.text(-.01, .5, cmap_name, va='center', ha='right', fontsize=10,
                    transform=ax.transAxes)

        # Turn off *all* ticks & spines, not just the ones with colormaps.
        for ax in axs:
            ax.set_axis_off()


    for cmap_category, cmap_list in cmaps:
        plot_color_gradients(cmap_category, cmap_list)





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


    *

      .. image-sg:: /gallery/color/images/sphx_glr_colormap_reference_001.png
         :alt: Perceptually Uniform Sequential colormaps
         :srcset: /gallery/color/images/sphx_glr_colormap_reference_001.png, /gallery/color/images/sphx_glr_colormap_reference_001_2_00x.png 2.00x
         :class: sphx-glr-multi-img

    *

      .. image-sg:: /gallery/color/images/sphx_glr_colormap_reference_002.png
         :alt: Sequential colormaps
         :srcset: /gallery/color/images/sphx_glr_colormap_reference_002.png, /gallery/color/images/sphx_glr_colormap_reference_002_2_00x.png 2.00x
         :class: sphx-glr-multi-img

    *

      .. image-sg:: /gallery/color/images/sphx_glr_colormap_reference_003.png
         :alt: Sequential (2) colormaps
         :srcset: /gallery/color/images/sphx_glr_colormap_reference_003.png, /gallery/color/images/sphx_glr_colormap_reference_003_2_00x.png 2.00x
         :class: sphx-glr-multi-img

    *

      .. image-sg:: /gallery/color/images/sphx_glr_colormap_reference_004.png
         :alt: Diverging colormaps
         :srcset: /gallery/color/images/sphx_glr_colormap_reference_004.png, /gallery/color/images/sphx_glr_colormap_reference_004_2_00x.png 2.00x
         :class: sphx-glr-multi-img

    *

      .. image-sg:: /gallery/color/images/sphx_glr_colormap_reference_005.png
         :alt: Cyclic colormaps
         :srcset: /gallery/color/images/sphx_glr_colormap_reference_005.png, /gallery/color/images/sphx_glr_colormap_reference_005_2_00x.png 2.00x
         :class: sphx-glr-multi-img

    *

      .. image-sg:: /gallery/color/images/sphx_glr_colormap_reference_006.png
         :alt: Qualitative colormaps
         :srcset: /gallery/color/images/sphx_glr_colormap_reference_006.png, /gallery/color/images/sphx_glr_colormap_reference_006_2_00x.png 2.00x
         :class: sphx-glr-multi-img

    *

      .. image-sg:: /gallery/color/images/sphx_glr_colormap_reference_007.png
         :alt: Miscellaneous colormaps
         :srcset: /gallery/color/images/sphx_glr_colormap_reference_007.png, /gallery/color/images/sphx_glr_colormap_reference_007_2_00x.png 2.00x
         :class: sphx-glr-multi-img





.. GENERATED FROM PYTHON SOURCE LINES 73-80

.. _reverse-cmap:

Reversed colormaps
------------------

Append ``_r`` to the name of any built-in colormap to get the reversed
version:

.. GENERATED FROM PYTHON SOURCE LINES 80-83

.. code-block:: Python


    plot_color_gradients("Original and reversed ", ['viridis', 'viridis_r'])




.. image-sg:: /gallery/color/images/sphx_glr_colormap_reference_008.png
   :alt: Original and reversed  colormaps
   :srcset: /gallery/color/images/sphx_glr_colormap_reference_008.png, /gallery/color/images/sphx_glr_colormap_reference_008_2_00x.png 2.00x
   :class: sphx-glr-single-img





.. GENERATED FROM PYTHON SOURCE LINES 84-86

The built-in reversed colormaps are generated using `.Colormap.reversed`.
For an example, see :ref:`reversing-colormap`

.. GENERATED FROM PYTHON SOURCE LINES 88-102

.. admonition:: References

   The use of the following functions, methods, classes and modules is shown
   in this example:

   - `matplotlib.colors`
   - `matplotlib.axes.Axes.imshow`
   - `matplotlib.figure.Figure.text`
   - `matplotlib.axes.Axes.set_axis_off`

.. tags::

   styling: colormap
   purpose: reference


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

   **Total running time of the script:** (0 minutes 1.269 seconds)


.. _sphx_glr_download_gallery_color_colormap_reference.py:

.. only:: html

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

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

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

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

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

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: colormap_reference.zip <colormap_reference.zip>`


.. only:: html

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

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