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