"""

====================================

Colors in the default property cycle

====================================

Display the colors from the default prop_cycle, which is obtained from the

:ref:`rc parameters<customizing>`.

"""

import matplotlib.pyplot as plt

import numpy as np

from matplotlib.colors import TABLEAU_COLORS, same_color

def f(x, a):

"""A nice sigmoid-like parametrized curve, ending approximately at *a*."""

return 0.85 * a * (1 / (1 + np.exp(-x)) + 0.2)

fig, ax = plt.subplots()

ax.axis('off')

ax.set_title("Colors in the default property cycle")

prop_cycle = plt.rcParams['axes.prop_cycle']

colors = prop_cycle.by_key()['color']

x = np.linspace(-4, 4, 200)

for i, (color, color_name) in enumerate(zip(colors, TABLEAU_COLORS)):

assert same_color(color, color_name)

pos = 4.5 - i

ax.plot(x, f(x, pos))

ax.text(4.2, pos, f"'C{i}': '{color_name}'", color=color, va="center")

ax.bar(9, 1, width=1.5, bottom=pos-0.5)

plt.show()

# %%

#

# .. admonition:: References

#

# The use of the following functions, methods, classes and modules is shown

# in this example:

#

# - `matplotlib.axes.Axes.axis`

# - `matplotlib.axes.Axes.text`

# - `matplotlib.colors.same_color`

# - `cycler.Cycler`

#

# .. tags::

#

# styling: color

# purpose: reference

# plot-type: line

# level: beginner