.. 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_pie_and_polar_charts_bar_of_pie.py: ========== Bar of pie ========== Make a "bar of pie" chart where the first slice of the pie is "exploded" into a bar chart with a further breakdown of said slice's characteristics. The example demonstrates using a figure with multiple sets of axes and using the axes patches list to add two ConnectionPatches to link the subplot charts. .. code-block:: default import matplotlib.pyplot as plt from matplotlib.patches import ConnectionPatch import numpy as np # make figure and assign axis objects fig = plt.figure(figsize=(9, 5.0625)) ax1 = fig.add_subplot(121) ax2 = fig.add_subplot(122) fig.subplots_adjust(wspace=0) # pie chart parameters ratios = [.27, .56, .17] labels = ['Approve', 'Disapprove', 'Undecided'] explode = [0.1, 0, 0] # rotate so that first wedge is split by the x-axis angle = -180 * ratios[0] ax1.pie(ratios, autopct='%1.1f%%', startangle=angle, labels=labels, explode=explode) # bar chart parameters xpos = 0 bottom = 0 ratios = [.33, .54, .07, .06] width = .2 colors = [[.1, .3, .5], [.1, .3, .3], [.1, .3, .7], [.1, .3, .9]] for j in range(len(ratios)): height = ratios[j] ax2.bar(xpos, height, width, bottom=bottom, color=colors[j]) ypos = bottom + ax2.patches[j].get_height() / 2 bottom += height ax2.text(xpos, ypos, "%d%%" % (ax2.patches[j].get_height() * 100), ha='center') ax2.set_title('Age of approvers') ax2.legend(('50-65', 'Over 65', '35-49', 'Under 35')) ax2.axis('off') ax2.set_xlim(- 2.5 * width, 2.5 * width) # use ConnectionPatch to draw lines between the two plots # get the wedge data theta1, theta2 = ax1.patches[0].theta1, ax1.patches[0].theta2 center, r = ax1.patches[0].center, ax1.patches[0].r bar_height = sum([item.get_height() for item in ax2.patches]) # draw top connecting line x = r * np.cos(np.pi / 180 * theta2) + center[0] y = np.sin(np.pi / 180 * theta2) + center[1] con = ConnectionPatch(xyA=(- width / 2, bar_height), xyB=(x, y), coordsA="data", coordsB="data", axesA=ax2, axesB=ax1) con.set_color([0, 0, 0]) con.set_linewidth(4) ax2.add_artist(con) # draw bottom connecting line x = r * np.cos(np.pi / 180 * theta1) + center[0] y = np.sin(np.pi / 180 * theta1) + center[1] con = ConnectionPatch(xyA=(- width / 2, 0), xyB=(x, y), coordsA="data", coordsB="data", axesA=ax2, axesB=ax1) con.set_color([0, 0, 0]) ax2.add_artist(con) con.set_linewidth(4) plt.show() .. image:: /gallery/pie_and_polar_charts/images/sphx_glr_bar_of_pie_001.png :class: sphx-glr-single-img ------------ References """""""""" The use of the following functions, methods, classes and modules is shown in this example: .. code-block:: default import matplotlib matplotlib.axes.Axes.pie matplotlib.axes.Axes.bar matplotlib.pyplot matplotlib.patches.ConnectionPatch .. _sphx_glr_download_gallery_pie_and_polar_charts_bar_of_pie.py: .. only :: html .. container:: sphx-glr-footer :class: sphx-glr-footer-example .. container:: sphx-glr-download :download:`Download Python source code: bar_of_pie.py ` .. container:: sphx-glr-download :download:`Download Jupyter notebook: bar_of_pie.ipynb ` .. only:: html .. rst-class:: sphx-glr-signature Keywords: matplotlib code example, codex, python plot, pyplot `Gallery generated by Sphinx-Gallery `_