matplotlib圆，动画，如何删除动画中的旧圆

matplotlib圆，动画，如何删除动画中的旧圆

我认为您

set_radius

每次都可以用来更改圆圈大小：

import numpy as npimport matplotlib.pyplot as pltimport matplotlib.animation as animationtestData = np.random.rand(100,2)-[0.5, 0.5]fig, ax = plt.subplots()circle1=plt.Circle(testData[20,:],0,color='r',fill=False, clip_on = False)ax.add_artist(circle1)# i is the radiusdef animate(i):    #init()    #you don't want to redraw the same dots over and over again, do you?    circle1.set_radius(i)def init():    sctPlot, = ax.plot(testData[:,0], testData[:,1], ".")    return sctPlot,ani = animation.FuncAnimation(fig, animate, np.arange(0.4, 2, 0.1), init_func=init,    interval=25, blit=False)plt.show()

因此，您不必每次都删除和重绘补丁，我认为这样做可能更有效。