Version 3.1.2
matplotlib

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Annotating a plot

This example shows how to annotate a plot with an arrow pointing to provided coordinates. We modify the defaults of the arrow, to "shrink" it.

For a complete overview of the annotation capabilities, also see the annotation tutorial.

=================
Annotating a plot
=================

This example shows how to annotate a plot with an arrow pointing to provided
coordinates. We modify the defaults of the arrow, to "shrink" it.

For a complete overview of the annotation capabilities, also see the
:doc:`annotation tutorial</tutorials/text/annotations>`.
"""
import numpy as np
import matplotlib.pyplot as plt

fig, ax = plt.subplots()

t = np.arange(0.0, 5.0, 0.01)
s = np.cos(2*np.pi*t)
line, = ax.plot(t, s, lw=2)

ax.annotate('local max', xy=(2, 1), xytext=(3, 1.5),
            arrowprops=dict(facecolor='black', shrink=0.05),
            )
ax.set_ylim(-2, 2)
plt.show()
Traceback (most recent call last):
  File "/build/matplotlib-tq5J6U/matplotlib-3.1.2/examples/pyplots/annotation_basic.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.annotate
matplotlib.pyplot.annotate

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