.. _pylab_examples-colorbar_tick_labelling_demo: pylab_examples example code: colorbar_tick_labelling_demo.py ============================================================ .. plot:: /home/tcaswell/src/p/matplotlib/doc/mpl_examples/pylab_examples/colorbar_tick_labelling_demo.py :: """Produce custom labelling for a colorbar. Contributed by Scott Sinclair """ import matplotlib.pyplot as plt import numpy as np from matplotlib import cm from numpy.random import randn # Make plot with vertical (default) colorbar fig, ax = plt.subplots() data = np.clip(randn(250, 250), -1, 1) cax = ax.imshow(data, interpolation='nearest', cmap=cm.coolwarm) ax.set_title('Gaussian noise with vertical colorbar') # Add colorbar, make sure to specify tick locations to match desired ticklabels cbar = fig.colorbar(cax, ticks=[-1, 0, 1]) cbar.ax.set_yticklabels(['< -1', '0', '> 1']) # vertically oriented colorbar # Make plot with horizontal colorbar fig, ax = plt.subplots() data = np.clip(randn(250, 250), -1, 1) cax = ax.imshow(data, interpolation='nearest', cmap=cm.afmhot) ax.set_title('Gaussian noise with horizontal colorbar') cbar = fig.colorbar(cax, ticks=[-1, 0, 1], orientation='horizontal') cbar.ax.set_xticklabels(['Low', 'Medium', 'High']) # horizontal colorbar plt.show() Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)