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Merged
jklymak merged 1 commit into from
Apr 19, 2018
Merged

Backport PR #11083 on branch v2.2.2-doc #11089

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78 changes: 31 additions & 47 deletions examples/pie_and_polar_charts/pie_demo2.py
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Pie Demo2
=========

Make a pie charts of varying size - see
https://matplotlib.org/api/pyplot_api.html#matplotlib.pyplot.pie for the
docstring.

This example shows a basic pie charts with labels optional features,
like autolabeling the percentage, offsetting a slice with "explode"
and adding a shadow, in different sizes.
Make a pie charts using :meth:`.Axes.pie`.

This example demonstrates some pie chart features like labels, varying size,
autolabeling the percentage, offsetting a slice and adding a shadow.
"""

import matplotlib.pyplot as plt
from matplotlib.gridspec import GridSpec

# Some data

labels = 'Frogs', 'Hogs', 'Dogs', 'Logs'
fracs = [15, 30, 45, 10]

explode = (0, 0.05, 0, 0)

# Make square figures and axes

the_grid = GridSpec(2, 2)

plt.subplot(the_grid[0, 0], aspect=1)

plt.pie(fracs, labels=labels, autopct='%1.1f%%', shadow=True)

plt.subplot(the_grid[0, 1], aspect=1)

plt.pie(fracs, explode=explode, labels=labels, autopct='%.0f%%', shadow=True)

plt.subplot(the_grid[1, 0], aspect=1)

patches, texts, autotexts = plt.pie(fracs, labels=labels,
autopct='%.0f%%',
shadow=True, radius=0.5)

# Make the labels on the small plot easier to read.
for t in texts:
t.set_size('smaller')
for t in autotexts:
t.set_size('x-small')
autotexts[0].set_color('y')

plt.subplot(the_grid[1, 1], aspect=1)

# Turn off shadow for tiny plot with exploded slice.
patches, texts, autotexts = plt.pie(fracs, explode=explode,
labels=labels, autopct='%.0f%%',
shadow=False, radius=0.5)
for t in texts:
t.set_size('smaller')
for t in autotexts:
t.set_size('x-small')
autotexts[0].set_color('y')
# Make figure and axes
fig, axs = plt.subplots(2, 2)

# A standard pie plot
axs[0, 0].pie(fracs, labels=labels, autopct='%1.1f%%', shadow=True)

# Shift the second slice using explode
axs[0, 1].pie(fracs, labels=labels, autopct='%.0f%%', shadow=True,
explode=(0, 0.1, 0, 0))

# Adapt radius and text size for a smaller pie
patches, texts, autotexts = axs[1, 0].pie(fracs, labels=labels,
autopct='%.0f%%',
textprops={'size': 'smaller'},
shadow=True, radius=0.5)
# Make percent texts even smaller
plt.setp(autotexts, size='x-small')
autotexts[0].set_color('white')

# Use a smaller explode and turn of the shadow for better visibility
patches, texts, autotexts = axs[1, 1].pie(fracs, labels=labels,
autopct='%.0f%%',
textprops={'size': 'smaller'},
shadow=False, radius=0.5,
explode=(0, 0.05, 0, 0))
plt.setp(autotexts, size='x-small')
autotexts[0].set_color('white')

plt.show()