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- Matplotlib Examples
  - lines_bars_and_markers Examples
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lines_bars_and_markers example code: line_demo_dash_control.py¶

(Source code, png, pdf)

../../_images/line_demo_dash_control.png

"""
Demo of a simple plot with a custom dashed line.

A Line object's ``set_dashes`` method allows you to specify dashes with
a series of on/off lengths (in points).
"""
import numpy as np
import matplotlib.pyplot as plt


x = np.linspace(0, 10, 500)
dashes = [10, 5, 100, 5]  # 10 points on, 5 off, 100 on, 5 off

fig, ax = plt.subplots()
line1, = ax.plot(x, np.sin(x), '--', linewidth=2,
                 label='Dashes set retroactively')
line1.set_dashes(dashes)

line2, = ax.plot(x, -1 * np.sin(x), dashes=[30, 5, 10, 5],
                 label='Dashes set proactively')

ax.legend(loc='lower right')
plt.show()

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