matplotlib 事件的退出递归 [英] Exit recursion for matplotlib events
问题描述
我有一个带有 button_press_event
的 matplotlib 图.在侦听器中,我使用 plt.pause
为每次点击制作一个简短的动画.这工作正常并且符合预期.但是,如果我在动画结束之前再次单击,我会输入一个递归并在最后播放剩余的动画.如果您点击足够快,您甚至可以到达 RecursionError
.
I have a little matplotlib figure with a button_press_event
.
Inside the listener I use plt.pause
to make a short animation for every click.
This works fine and as expected.
However if I click again before the animation is over, I enter a recursion and the remaining animations are played at the end. If you click fast enough you can even reach the RecursionError
.
我需要更改什么,以便新的点击丢弃 on_click
方法中的所有剩余步骤?
What do I need to change, so a new click discards all remaining steps in the on_click
method?
import numpy as np
import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.subplots()
ax.set_xlim(0, 10)
ax.set_ylim(0, 10)
xy = np.random.random(2)*10
h1 = ax.plot(xy[0], xy[1], marker='x', color='k')[0]
h2 = ax.plot(xy[0], xy[1], marker='o', color='r')[0]
def on_click(event):
h1.set_xdata(event.xdata)
h1.set_ydata(event.ydata)
for i in range(10):
h2.set_xdata(event.xdata+np.random.random()-0.5)
h2.set_ydata(event.ydata+np.random.random()-0.5)
plt.pause(0.1)
cid_click = fig.canvas.mpl_connect('button_press_event', on_click)
推荐答案
您可以使用 FuncAnimation
.然后确保在新动画开始之前停止并删除以前的动画.
You could use a FuncAnimation
. Then make sure to stop and delete previous animations before a new animation starts.
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.animation import FuncAnimation
fig, ax = plt.subplots()
ax.set_xlim(0, 10)
ax.set_ylim(0, 10)
xy = np.random.random(2)*10
h1 = ax.plot(xy[0], xy[1], marker='x', color='k')[0]
h2 = ax.plot(xy[0], xy[1], marker='o', color='r')[0]
anis = []
def on_click(event):
h1.set_xdata(event.xdata)
h1.set_ydata(event.ydata)
def animate(i):
h2.set_xdata(event.xdata+np.random.random()-0.5)
h2.set_ydata(event.ydata+np.random.random()-0.5)
for ani in anis:
ani.event_source.stop()
anis.remove(ani)
del ani
anis.append(FuncAnimation(fig, animate, frames=10, repeat=False))
fig.canvas.draw_idle()
cid_click = fig.canvas.mpl_connect('button_press_event', on_click)
plt.show()
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