| """ | |
| ============== | |
| Keypress event | |
| ============== | |
| Show how to connect to keypress events. | |
| .. 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. | |
| """ | |
| import sys | |
| import matplotlib.pyplot as plt | |
| import numpy as np | |
| def on_press(event): | |
| print('press', event.key) | |
| sys.stdout.flush() | |
| if event.key == 'x': | |
| visible = xl.get_visible() | |
| xl.set_visible(not visible) | |
| fig.canvas.draw() | |
| # Fixing random state for reproducibility | |
| np.random.seed(19680801) | |
| fig, ax = plt.subplots() | |
| fig.canvas.mpl_connect('key_press_event', on_press) | |
| ax.plot(np.random.rand(12), np.random.rand(12), 'go') | |
| xl = ax.set_xlabel('easy come, easy go') | |
| ax.set_title('Press a key') | |
| plt.show() | |