3xy5grjtg

main.py

3xy5grjtg

main.py

"""
Matplotlib Animation Example

author: Jake Vanderplas
email: vanderplas@astro.washington.edu
website: 
license: BSD
Please feel free to use and modify this, but keep the above information. Thanks!
"""

import numpy as np
from matplotlib import pyplot as plt
from matplotlib import animation

# First set up the figure, the axis, and the plot element we want to animate
fig = plt.figure()
ax = plt.axes(xlim=(0, 2), ylim=(-2, 2))
line, = ax.plot([], [], lw=2)

# initialization function: plot the background of each frame
def init():
    line.set_data([], [])
    return line,

# animation function.  This is called sequentially
def animate(i):
    x = np.linspace(0, 2, 1000)
    y = 2*np.sin(2 * np.pi * (x - 0.01 * 0))
    line.set_data(x, y)
    return line,

# call the animator.  blit=True means only re-draw the parts that have changed.
anim = animation.FuncAnimation(fig, animate, init_func=init,
                               frames=200, interval=20, blit=True)

# save the animation as an mp4.  This requires ffmpeg or mencoder to be
# installed.  The extra_args ensure that the x264 codec is used, so that
# the video can be embedded in html5.  You may need to adjust this for
# your system: for more information, see
# 
anim.save('basic_animation.mp4', fps=30, extra_args=['-vcodec', 'libx264'])

plt.show()

STDIN

Output:

Matplotlib created a temporary config/cache directory at /tmp/matplotlib-ifh__5fv because the default path (/root/.config/matplotlib) is not a writable directory; it is highly recommended to set the MPLCONFIGDIR environment variable to a writable directory, in particular to speed up the import of Matplotlib and to better support multiprocessing.
MovieWriter ffmpeg unavailable; using Pillow instead.
Traceback (most recent call last):
  File "main.py", line 41, in <module>
    anim.save('basic_animation.mp4', fps=30, extra_args=['-vcodec', 'libx264'])
  File "/usr/local/lib/python3.6/dist-packages/matplotlib/animation.py", line 1117, in save
    writer = writer_cls(fps, **writer_kwargs)
TypeError: __init__() got an unexpected keyword argument 'extra_args'