python - 在 matplotlib 中使用动画显示细丝的增长和收缩

Question

这是一个简单的代码，演示了我想要做什么。点是灯丝的尖端，随机生长和收缩。当收缩发生时，我希望线条也收缩，而不是回溯已经可见的较长线条（基本上在动画的每一步，点应该作为线条的终点可见）。尖端表示灯丝是在增长还是在收缩。

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

X = [1,2,3,4,5,6,7,7,6,5,4,3,4,5,6,7,8]
Y = [1,2,3,4,5,6,7,7,6,5,4,3,4,5,6,7,8]

fig, ax = plt.subplots(1,1)
ax.set_xlim([0, 20])
ax.set_ylim([-1.1, 20])


graph, = ax.plot([], [], color = ''green)
dot, = ax.plot([], [], 'o', color='green', markersize = 4)

def oj(i):

    graph.set_data(X[:i+1],Y[:i+1])

    dot.set_data(X[i],Y[i])

anim = animation.FuncAnimation(fig, oj, frames=len(X), interval=1000,repeat 
= False)
plt.show()

标签： pythonanimationmatplotlib