.. 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_lines_bars_and_markers_barchart.py: ============================= Grouped bar chart with labels ============================= Bar charts are useful for visualizing counts, or summary statistics with error bars. This example shows a ways to create a grouped bar chart with Matplotlib and also how to annotate bars with labels. .. code-block:: default import matplotlib import matplotlib.pyplot as plt import numpy as np men_means, men_std = (20, 35, 30, 35, 27), (2, 3, 4, 1, 2) women_means, women_std = (25, 32, 34, 20, 25), (3, 5, 2, 3, 3) ind = np.arange(len(men_means)) # the x locations for the groups width = 0.35 # the width of the bars fig, ax = plt.subplots() rects1 = ax.bar(ind - width/2, men_means, width, yerr=men_std, label='Men') rects2 = ax.bar(ind + width/2, women_means, width, yerr=women_std, label='Women') # Add some text for labels, title and custom x-axis tick labels, etc. ax.set_ylabel('Scores') ax.set_title('Scores by group and gender') ax.set_xticks(ind) ax.set_xticklabels(('G1', 'G2', 'G3', 'G4', 'G5')) ax.legend() def autolabel(rects, xpos='center'): """ Attach a text label above each bar in *rects*, displaying its height. *xpos* indicates which side to place the text w.r.t. the center of the bar. It can be one of the following {'center', 'right', 'left'}. """ ha = {'center': 'center', 'right': 'left', 'left': 'right'} offset = {'center': 0, 'right': 1, 'left': -1} for rect in rects: height = rect.get_height() ax.annotate('{}'.format(height), xy=(rect.get_x() + rect.get_width() / 2, height), xytext=(offset[xpos]*3, 3), # use 3 points offset textcoords="offset points", # in both directions ha=ha[xpos], va='bottom') autolabel(rects1, "left") autolabel(rects2, "right") fig.tight_layout() plt.show() .. image:: /gallery/lines_bars_and_markers/images/sphx_glr_barchart_001.png :class: sphx-glr-single-img ------------ References """""""""" The use of the following functions, methods and classes is shown in this example: .. code-block:: default matplotlib.axes.Axes.bar matplotlib.pyplot.bar matplotlib.axes.Axes.annotate matplotlib.pyplot.annotate .. _sphx_glr_download_gallery_lines_bars_and_markers_barchart.py: .. only :: html .. container:: sphx-glr-footer :class: sphx-glr-footer-example .. container:: sphx-glr-download :download:`Download Python source code: barchart.py ` .. container:: sphx-glr-download :download:`Download Jupyter notebook: barchart.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature Keywords: matplotlib code example, codex, python plot, pyplot `Gallery generated by Sphinx-Gallery `_