| | """ |
| | ================================= |
| | Pausing and Resuming an Animation |
| | ================================= |
| | |
| | This example showcases: |
| | |
| | - using the Animation.pause() method to pause an animation. |
| | - using the Animation.resume() method to resume an animation. |
| | |
| | .. note:: |
| | This example exercises the interactive capabilities of Matplotlib, and this |
| | will not appear in the static documentation. Please run this code on your |
| | machine to see the interactivity. |
| | |
| | You can copy and paste individual parts, or download the entire example |
| | using the link at the bottom of the page. |
| | |
| | Output generated via `matplotlib.animation.Animation.to_jshtml`. |
| | """ |
| |
|
| | import matplotlib.pyplot as plt |
| | import numpy as np |
| |
|
| | import matplotlib.animation as animation |
| |
|
| |
|
| | class PauseAnimation: |
| | def __init__(self): |
| | fig, ax = plt.subplots() |
| | ax.set_title('Click to pause/resume the animation') |
| | x = np.linspace(-0.1, 0.1, 1000) |
| |
|
| | |
| | self.n0 = (1.0 / ((4 * np.pi * 2e-4 * 0.1) ** 0.5) |
| | * np.exp(-x ** 2 / (4 * 2e-4 * 0.1))) |
| | self.p, = ax.plot(x, self.n0) |
| |
|
| | self.animation = animation.FuncAnimation( |
| | fig, self.update, frames=200, interval=50, blit=True) |
| | self.paused = False |
| |
|
| | fig.canvas.mpl_connect('button_press_event', self.toggle_pause) |
| |
|
| | def toggle_pause(self, *args, **kwargs): |
| | if self.paused: |
| | self.animation.resume() |
| | else: |
| | self.animation.pause() |
| | self.paused = not self.paused |
| |
|
| | def update(self, i): |
| | self.n0 += i / 100 % 5 |
| | self.p.set_ydata(self.n0 % 20) |
| | return (self.p,) |
| |
|
| |
|
| | pa = PauseAnimation() |
| | plt.show() |
| |
|
