Add lines directly to a figure

You can add artists such as a Line2D directly to a figure. This is typically useful for visual structuring.

import matplotlib.pyplot as plt

import matplotlib.lines as lines

fig, axs = plt.subplots(2, 2, gridspec_kw={'hspace': 0.4, 'wspace': 0.4})
fig.add_artist(lines.Line2D([0, 1], [0.47, 0.47], linewidth=3))
fig.add_artist(lines.Line2D([0.5, 0.5], [1, 0], linewidth=3))
plt.show()

References

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

• matplotlib.pyplot.figure

• matplotlib.lines

• matplotlib.lines.Line2D