Python动画图 [英] Python animation graph

问题描述

我有一个项目来创建一些图形动画.我将有一个有向加权图，并且在每一步中，我都会对此进行一些更改.我想通过动画进行这些更改.所以，我的问题是:

I have a project to create few graph animations. I will have a directed weighted graph and on each step, I will change few things on this. I want to make those changes with animation. So, my question is this:

是否可以使用python制作动画，如果可以，您将如何制作简单的动画?

推荐答案

Matplotlib 是 Python 的标准图形库，它带有一个相当不错的动画包.Jake Vanderplas 在这里有一个很好的教程.

Matplotlib is the standard graphing library for python, and it comes with a pretty decent animation package. Jake Vanderplas has an excellent tutorial on using this here.

取自此链接，如果您想为正弦波制作动画，您可以使用以下方法:

Taken from this link, if you want to animate a sine wave, you'd use the following method:

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)

plt.show()

动画库每间隔调用一次函数animate"(在本例中指定为 20).该函数应该适当地更新绘图.在这种情况下，它使用 set_data 方法更新line"，即正弦波数据数组.

The animation library calls the function "animate" once every interval (specified as 20 in this example). The function should update the plots appropriately. In this case, it updates "line", which is the array of sine wave data using the set_data method.

这篇关于Python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IT屋！