| """ | |
| ===================== | |
| Grayscale style sheet | |
| ===================== | |
| This example demonstrates the "grayscale" style sheet, which changes all colors | |
| that are defined as `.rcParams` to grayscale. Note, however, that not all | |
| plot elements respect `.rcParams`. | |
| """ | |
| import matplotlib.pyplot as plt | |
| import numpy as np | |
| # Fixing random state for reproducibility | |
| np.random.seed(19680801) | |
| def color_cycle_example(ax): | |
| L = 6 | |
| x = np.linspace(0, L) | |
| ncolors = len(plt.rcParams['axes.prop_cycle']) | |
| shift = np.linspace(0, L, ncolors, endpoint=False) | |
| for s in shift: | |
| ax.plot(x, np.sin(x + s), 'o-') | |
| def image_and_patch_example(ax): | |
| ax.imshow(np.random.random(size=(20, 20)), interpolation='none') | |
| c = plt.Circle((5, 5), radius=5, label='patch') | |
| ax.add_patch(c) | |
| plt.style.use('grayscale') | |
| fig, (ax1, ax2) = plt.subplots(ncols=2) | |
| fig.suptitle("'grayscale' style sheet") | |
| color_cycle_example(ax1) | |
| image_and_patch_example(ax2) | |
| plt.show() | |