问题描述
我一直在尝试为其中包含多个子图的动画设置动画时遇到一些问题.这是MWE:
I've been facing some issues trying to animate a plot with several different subplots in it. Here's a MWE:
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation
data=np.random.rand(4, 50, 150)
Z=np.arange(0,120,.8)
fig, axes = plt.subplots(2,2)
it=0
for nd, ax in enumerate(axes.flatten()):
ax.plot(data[nd,it], Z)
def run(it):
print(it)
for nd, ax in enumerate(axes.flatten()):
ax.plot(data[nd, it], Z)
return axes.flatten()
ani=animation.FuncAnimation(fig, run, frames=np.arange(0,data.shape[1]), interval=30, blit=True)
ani.save('mwe.mp4')
如您所见，我正在尝试使用 FuncAnimation() 绘制预先生成的数据.从我所看到的方法来看，这应该可行，但是，它输出一个大约一秒长的空白 .mp4 文件并且没有给出任何错误，所以我不知道出了什么问题.
As you can see I'm trying to plot pre-generated data with FuncAnimation(). From the approaches I've seen this should work, however, it outputs a blank .mp4 file about a second long and gives out no error, so I have no idea what's going wrong.
我还尝试了一些其他方法来绘制子图(例如这个)，但我无法让它工作我认为我的这种方法会更简单.
I've also tried some other approaches to plotting with subplots (like this one) but I couldn't make it work and I thought this approach of mine would be simpler.
有什么想法吗?
推荐答案
您可能希望更新线条而不是向它们绘制新数据.这也将允许设置 blit = False ，因为保存动画时，无论如何都不会使用blitting.
You would want to update the lines instead of plotting new data to them. This would also allow to set blit=False, because saving the animation, no blitting is used anyways.
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation
data=np.random.rand(4, 50, 150)
Z=np.arange(0,120,.8)
fig, axes = plt.subplots(2,2)
lines=[]
for nd, ax in enumerate(axes.flatten()):
l, = ax.plot(data[nd,0], Z)
lines.append(l)
def run(it):
print(it)
for nd, line in enumerate(lines):
line.set_data(data[nd, it], Z)
return lines
ani=animation.FuncAnimation(fig, run, frames=np.arange(0,data.shape[1]),
interval=30, blit=True)
ani.save('mwe.mp4')
plt.show()
这篇关于matplotlib 中带有子图的动画图的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！