我一直在调整这个页面(http://jakevdp.github.io/blog/2012/08/18/matplotlib-animation-tutorial/)的代码,以制作自己的动画,但它很快就会崩溃。从任务管理器中可以看到,运行程序时内存的构建增长在30秒内达到1GB,在我的笔记本电脑上非常显着。由于代码每次都调用animation(i)来设置线条上的y_data,旧数据是否未被替换,导致了内存的不断增长?我想修复这个问题。我对Matplotlib的内部工作机制的了解有限,尝试了一些方法,例如将close()、clf()和gc.collect()放入animation(i),但都没有起作用。
"""
Matplotlib Animation Example
author: Jake Vanderplas
email: vanderplas@astro.washington.edu
website: http://jakevdp.github.com
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 = np.sin(2 * np.pi * (x - 0.01 * i))
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
# http://matplotlib.sourceforge.net/api/animation_api.html
# anim.save('basic_animation.mp4', fps=30, extra_args=['-vcodec', 'libx264'])
plt.show()