.. only:: html
.. 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))
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 = r * np.sin(np.pi / 180 * theta2) + center[1]
con = ConnectionPatch(xyA=(-width / 2, bar_height), coordsA=ax2.transData,
xyB=(x, y), coordsB=ax1.transData)
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 = r * np.sin(np.pi / 180 * theta1) + center[1]
con = ConnectionPatch(xyA=(-width / 2, 0), coordsA=ax2.transData,
xyB=(x, y), coordsB=ax1.transData)
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
:alt: Age of approvers
: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 sphx-glr-download-python
:download:`Download Python source code: bar_of_pie.py `
.. container:: sphx-glr-download sphx-glr-download-jupyter
: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
`_