.. _pylab_examples-barchart_demo: pylab_examples example code: barchart_demo.py ============================================= .. plot:: /home/tcaswell/source/my_source/matplotlib/doc/mpl_examples/pylab_examples/barchart_demo.py :: """ Bar chart demo with pairs of bars grouped for easy comparison. """ import numpy as np import matplotlib.pyplot as plt n_groups = 5 means_men = (20, 35, 30, 35, 27) std_men = (2, 3, 4, 1, 2) means_women = (25, 32, 34, 20, 25) std_women = (3, 5, 2, 3, 3) fig, ax = plt.subplots() index = np.arange(n_groups) bar_width = 0.35 opacity = 0.4 error_config = {'ecolor': '0.3'} rects1 = plt.bar(index, means_men, bar_width, alpha=opacity, color='b', yerr=std_men, error_kw=error_config, label='Men') rects2 = plt.bar(index + bar_width, means_women, bar_width, alpha=opacity, color='r', yerr=std_women, error_kw=error_config, label='Women') plt.xlabel('Group') plt.ylabel('Scores') plt.title('Scores by group and gender') plt.xticks(index + bar_width, ('A', 'B', 'C', 'D', 'E')) plt.legend() plt.tight_layout() plt.show() Keywords: python, matplotlib, pylab, example, codex (see :ref:`how-to-search-examples`)