.. only:: html .. note:: :class: sphx-glr-download-link-note Click :ref:`here ` 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. .. 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 :class: sphx-glr-single-img ------------ References """""""""" The use of the following functions and methods is shown in this example: .. 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 .. _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 ` .. container:: sphx-glr-download sphx-glr-download-jupyter :download:`Download Jupyter notebook: contour_corner_mask.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature Keywords: matplotlib code example, codex, python plot, pyplot `Gallery generated by Sphinx-Gallery `_