.. _pylab_examples-pcolor_log: pylab_examples example code: pcolor_log.py ========================================== .. plot:: /home/tcaswell/other_source/matplotlib/doc/mpl_examples/pylab_examples/pcolor_log.py :: import matplotlib.pyplot as plt from matplotlib.colors import LogNorm import numpy as np from matplotlib.mlab import bivariate_normal N = 100 X, Y = np.mgrid[-3:3:complex(0, N), -2:2:complex(0, N)] # A low hump with a spike coming out of the top right. # Needs to have z/colour axis on a log scale so we see both hump and spike. # linear scale only shows the spike. Z1 = bivariate_normal(X, Y, 0.1, 0.2, 1.0, 1.0) + 0.1 * bivariate_normal(X, Y, 1.0, 1.0, 0.0, 0.0) plt.subplot(2,1,1) plt.pcolor(X, Y, Z1, norm=LogNorm(vmin=Z1.min(), vmax=Z1.max()), cmap='PuBu_r') plt.colorbar() plt.subplot(2,1,2) plt.pcolor(X, Y, Z1, cmap='PuBu_r') plt.colorbar() plt.show() Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)