"""

======

Cursor

======

"""

from matplotlib.widgets import Cursor

import numpy as np

import matplotlib.pyplot as plt

# Fixing random state for reproducibility

np.random.seed(19680801)

fig, ax = plt.subplots(figsize=(8, 6))

x, y = 4*(np.random.rand(2, 100) - .5)

ax.plot(x, y, 'o')

ax.set_xlim(-2, 2)

ax.set_ylim(-2, 2)

# Set useblit=True on most backends for enhanced performance.

cursor = Cursor(ax, useblit=True, color='red', linewidth=2)

plt.show()

#############################################################################

#

# .. admonition:: References

#

# The use of the following functions, methods, classes and modules is shown

# in this example:

#

# - `matplotlib.widgets.Cursor`