Jupyter中的嵌入式动画 [英] Inline animations in Jupyter

问题描述

我有一个python动画脚本(使用matplotlib的funcAnimation)，该脚本在Spyder中运行，但不在Jupyter中运行.我尝试遵循各种建议，例如添加％matplotlib inline"和将matplotlib后端更改为"Qt4agg"，所有这些均未成功.我还尝试过运行几个示例动画(来自Jupyter教程)，但没有一个起作用.有时我会收到一条错误消息，有时会出现该图，但没有动画.顺便说一句，我已经使用％matplotlib内联"获得了pyplot.plot().

I have a python animation script (using matplotlib's funcAnimation), which runs in Spyder but not in Jupyter. I have tried following various suggestions such as adding "%matplotlib inline" and changing the matplotlib backend to "Qt4agg", all without success. I have also tried running several example animations (from Jupyter tutorials), none of which have worked. Sometimes I get an error message and sometimes the plot appears, but does not animate. Incidentally, I have gotten pyplot.plot() to work using "%matplotlib inline".

是否有人知道一个使用Jupyter笔记本且使用funcAnimation的简单内联动画示例的笔记本.预先感谢您的帮助！

Does anyone know of a working Jupyter notebook with a SIMPLE inline animation example that uses funcAnimation. Thanks in advance for the help!

[注意:我在Windows 7上]

[Note: I am on Windows 7]

推荐答案

笔记本后端

'Inline'表示图以png图形显示.这些png图片无法设置动画.虽然原则上可以通过连续替换png图像来制作动画，但这可能是不希望的.

notebook backend

'Inline' means that the plots are shown as png graphics. Those png images cannot be animated. While in principle one could build an animation by successively replacing the png images, this is probably undesired.

一种解决方案是使用笔记本后端，该后端与FuncAnimation完全兼容，因为它呈现了matplotlib图形本身:

A solution is to use the notebook backend, which is fully compatible with FuncAnimation as it renders the matplotlib figure itself:

%matplotlib notebook

jsanimation

从matplotlib 2.1开始，我们可以使用JavaScript创建动画.除了不需要任何视频编解码器之外，这与ani.to_html5()解决方案类似.

jsanimation

From matplotlib 2.1 on, we can create an animation using JavaScript. This is similar to the ani.to_html5() solution, except that it does not require any video codecs.

from IPython.display import HTML
HTML(ani.to_jshtml())

一些完整的例子:

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

t = np.linspace(0,2*np.pi)
x = np.sin(t)

fig, ax = plt.subplots()
ax.axis([0,2*np.pi,-1,1])
l, = ax.plot([],[])

def animate(i):
    l.set_data(t[:i], x[:i])

ani = matplotlib.animation.FuncAnimation(fig, animate, frames=len(t))

from IPython.display import HTML
HTML(ani.to_jshtml())

或者，将jsanimation设置为显示动画的默认值，

Alternatively, make the jsanimation the default for showing animations,

plt.rcParams["animation.html"] = "jshtml"

然后最后简单地声明ani以获得动画.

Then at the end simply state ani to obtain the animation.

另请参见此答案以获取完整概述.

Also see this answer for a complete overview.

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