You are reading an old version of the documentation (v1.4.2). For the latest version see

Previous topic

statistics example code:

Next topic

style_sheets Examples

This Page

statistics example code: violinplot_demo.pyΒΆ

(Source code, png, hires.png, pdf)

Demo of the new violinplot functionality

import random
import numpy as np
import matplotlib.pyplot as plt

# fake data
fs = 10 # fontsize
pos = [1,2,4,5,7,8]
data = [np.random.normal(size=100) for i in pos]

fig, axes = plt.subplots(nrows=2, ncols=3, figsize=(6,6))

axes[0, 0].violinplot(data, pos, points=20, widths=0.1,
                      showmeans=True, showextrema=True, showmedians=True)
axes[0, 0].set_title('Custom violinplot 1', fontsize=fs)

axes[0, 1].violinplot(data, pos, points=40, widths=0.3,
                      showmeans=True, showextrema=True, showmedians=True,
axes[0, 1].set_title('Custom violinplot 2', fontsize=fs)

axes[0, 2].violinplot(data, pos, points=60, widths=0.5, showmeans=True,
                      showextrema=True, showmedians=True, bw_method=0.5)
axes[0, 2].set_title('Custom violinplot 3', fontsize=fs)

axes[1, 0].violinplot(data, pos, points=80, vert=False, widths=0.7,
                      showmeans=True, showextrema=True, showmedians=True)
axes[1, 0].set_title('Custom violinplot 4', fontsize=fs)

axes[1, 1].violinplot(data, pos, points=100, vert=False, widths=0.9,
                      showmeans=True, showextrema=True, showmedians=True,
axes[1, 1].set_title('Custom violinplot 5', fontsize=fs)

axes[1, 2].violinplot(data, pos, points=200, vert=False, widths=1.1,
                      showmeans=True, showextrema=True, showmedians=True,
axes[1, 2].set_title('Custom violinplot 6', fontsize=fs)

for ax in axes.flatten():

fig.suptitle("Violin Plotting Examples")

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