| """ |
| ================================= |
| 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() |
|
|
