Sep 11, 2024 · Sep 9, 2024
diff --git a/galleries/examples/style_sheets/petroff10.py b/galleries/examples/style_sheets/petroff10.py
 """
 =====================
 Petroff10 style sheet
 =====================

 This example demonstrates the "petroff10" style, which implements the 10-color
 sequence developed by Matthew A. Petroff [1]_ for accessible data visualization.
 The style balances aesthetics with accessibility considerations, making it
 suitable for various types of plots while ensuring readability and distinction
 between data series.

 .. [1] https://arxiv.org/abs/2107.02270

 """

 import matplotlib.pyplot as plt
 import numpy as np


 def colored_lines_example(ax):
    t = np.linspace(-10, 10, 100)
    nb_colors = len(plt.rcParams['axes.prop_cycle'])
    shifts = np.linspace(-5, 5, nb_colors)
    amplitudes = np.linspace(1, 1.5, nb_colors)
    for t0, a in zip(shifts, amplitudes):
        y = a / (1 + np.exp(-(t - t0)))
        line, = ax.plot(t, y, '-')
        point_indices = np.linspace(0, len(t) - 1, 20, dtype=int)
        ax.plot(t[point_indices], y[point_indices], 'o', color=line.get_color())
    ax.set_xlim(-10, 10)


 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('petroff10')
 fig, (ax1, ax2) = plt.subplots(ncols=2, figsize=(12, 5))
 fig.suptitle("'petroff10' style sheet")
 colored_lines_example(ax1)
 image_and_patch_example(ax2)
 plt.show()
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,43 @@
		"""
		=====================
		Petroff10 style sheet
		=====================

		This example demonstrates the "petroff10" style, which implements the 10-color
		sequence developed by Matthew A. Petroff [1]_ for accessible data visualization.
		The style balances aesthetics with accessibility considerations, making it
		suitable for various types of plots while ensuring readability and distinction
		between data series.

		.. [1] https://arxiv.org/abs/2107.02270

		"""

		import matplotlib.pyplot as plt
		import numpy as np


		def colored_lines_example(ax):
		t = np.linspace(-10, 10, 100)
		nb_colors = len(plt.rcParams['axes.prop_cycle'])
		shifts = np.linspace(-5, 5, nb_colors)
		amplitudes = np.linspace(1, 1.5, nb_colors)
		for t0, a in zip(shifts, amplitudes):
		y = a / (1 + np.exp(-(t - t0)))
		line, = ax.plot(t, y, '-')
		point_indices = np.linspace(0, len(t) - 1, 20, dtype=int)
		ax.plot(t[point_indices], y[point_indices], 'o', color=line.get_color())
		ax.set_xlim(-10, 10)


		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('petroff10')
		fig, (ax1, ax2) = plt.subplots(ncols=2, figsize=(12, 5))
		fig.suptitle("'petroff10' style sheet")
		colored_lines_example(ax1)
		image_and_patch_example(ax2)
		plt.show()