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animation example code: moviewriter.pyΒΆ

[source code]


This example uses a MovieWriter directly to grab individual frames and write
them to a file. This avoids any event loop integration, but has the advantage
of working with even the Agg backend. This is not recommended for use in an
interactive setting.

# -*- noplot -*-

import numpy as np
import matplotlib
import matplotlib.pyplot as plt
import matplotlib.animation as manimation

FFMpegWriter = manimation.writers['ffmpeg']
metadata = dict(title='Movie Test', artist='Matplotlib',
                comment='Movie support!')
writer = FFMpegWriter(fps=15, metadata=metadata)

fig = plt.figure()
l, = plt.plot([], [], 'k-o')

plt.xlim(-5, 5)
plt.ylim(-5, 5)

x0, y0 = 0, 0

with writer.saving(fig, "writer_test.mp4", 100):
    for i in range(100):
        x0 += 0.1 * np.random.randn()
        y0 += 0.1 * np.random.randn()
        l.set_data(x0, y0)

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