Version 3.0.2
matplotlib

Legend using pre-defined labels

Defining legend labels with plots.

===============================
Legend using pre-defined labels
===============================

Defining legend labels with 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('C0')

plt.show()
Traceback (most recent call last):
  File "/build/matplotlib-xz4j8t/matplotlib-3.1.2/examples/text_labels_and_annotations/legend.py", line 1
    ===============================
    ^
SyntaxError: invalid syntax

References

The use of the following functions, methods, classes and modules is shown in this example:

import matplotlib
matplotlib.axes.Axes.plot
matplotlib.pyplot.plot
matplotlib.axes.Axes.legend
matplotlib.pyplot.legend

Keywords: matplotlib code example, codex, python plot, pyplot Gallery generated by Sphinx-Gallery