.. _pylab_examples-contour_corner_mask: pylab_examples example code: contour_corner_mask.py =================================================== .. plot:: /home/tcaswell/source/p/matplotlib/doc/mpl_examples/pylab_examples/contour_corner_mask.py :: #!/usr/bin/env python """ Illustrate the difference between corner_mask=False and corner_mask=True for masked contour plots. """ 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=np.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] for i, corner_mask in enumerate(corner_masks): plt.subplot(1, 2, i+1) cs = plt.contourf(x, y, z, corner_mask=corner_mask) plt.contour(cs, colors='k') plt.title('corner_mask = {0}'.format(corner_mask)) # Plot grid. plt.grid(c='k', ls='-', alpha=0.3) # Indicate masked points with red circles. plt.plot(np.ma.array(x, mask=~mask), y, 'ro') plt.show() Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)