You are reading an old version of the documentation (v2.0.1). For the latest version see https://matplotlib.org/stable/
matplotlib

Travis-CI:

This Page

api example code: legend_demo.pyΒΆ

(Source code, png, pdf)

../../_images/legend_demo1.png
"""
===============================
Legend using pre-defined labels
===============================

Notice how the legend labels are defined with the plots!
"""


import numpy as np
import matplotlib.pyplot as plt

# Make some fake data.
a = b = np.arange(0, 3, .02)
c = np.exp(a)
d = c[::-1]

# Create plots with pre-defined labels.
fig, ax = plt.subplots()
ax.plot(a, c, 'k--', label='Model length')
ax.plot(a, d, 'k:', label='Data length')
ax.plot(a, c + d, 'k', label='Total message length')

legend = ax.legend(loc='upper center', shadow=True, fontsize='x-large')

# Put a nicer background color on the legend.
legend.get_frame().set_facecolor('#00FFCC')

plt.show()

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