pylab_examples example code: pie_demo2.py

(Source code, png, pdf)

"""
Make a pie charts of varying size - see
http://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.

"""
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')

plt.show()

Keywords: python, matplotlib, pylab, example, codex (see Search examples)