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

.. only:: html

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

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

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

.. _sphx_glr_gallery_images_contours_and_fields_contour_corner_mask.py:


===================
Contour Corner Mask
===================

Illustrate the difference between ``corner_mask=False`` and
``corner_mask=True`` for masked contour plots.

.. GENERATED FROM PYTHON SOURCE LINES 9-40

.. code-block:: default

    import matplotlib.pyplot as plt
    import numpy as np

    # Data to plot.
    x, y = np.meshgrid(np.arange(7), np.arange(10))
    z = np.sin(0.5 * x) * np.cos(0.52 * y)

    # Mask various z values.
    mask = np.zeros_like(z, dtype=bool)
    mask[2, 3:5] = True
    mask[3:5, 4] = True
    mask[7, 2] = True
    mask[5, 0] = True
    mask[0, 6] = True
    z = np.ma.array(z, mask=mask)

    corner_masks = [False, True]
    fig, axs = plt.subplots(ncols=2)
    for ax, corner_mask in zip(axs, corner_masks):
        cs = ax.contourf(x, y, z, corner_mask=corner_mask)
        ax.contour(cs, colors='k')
        ax.set_title('corner_mask = {0}'.format(corner_mask))

        # Plot grid.
        ax.grid(c='k', ls='-', alpha=0.3)

        # Indicate masked points with red circles.
        ax.plot(np.ma.array(x, mask=~mask), y, 'ro')

    plt.show()




.. image:: /gallery/images_contours_and_fields/images/sphx_glr_contour_corner_mask_001.png
    :alt: corner_mask = False, corner_mask = True
    :class: sphx-glr-single-img





.. GENERATED FROM PYTHON SOURCE LINES 41-48

------------

References
""""""""""

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

.. GENERATED FROM PYTHON SOURCE LINES 49-55

.. code-block:: default


    import matplotlib
    matplotlib.axes.Axes.contour
    matplotlib.pyplot.contour
    matplotlib.axes.Axes.contourf
    matplotlib.pyplot.contourf




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

 Out:

 .. code-block:: none


    <function contourf at 0x7f73be827160>




.. _sphx_glr_download_gallery_images_contours_and_fields_contour_corner_mask.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: contour_corner_mask.py <contour_corner_mask.py>`



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

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