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color example code: colormaps_reference.py

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color example code: color_cycle_demo.py¶

(Source code, png)

../../_images/color_cycle_demo.png

"""
Demo of custom color-cycle settings to control colors for multi-line plots.

This example demonstrates two different APIs:

    1. Setting the default rc-parameter specifying the color cycle.
       This affects all subsequent plots.
    2. Setting the color cycle for a specific axes. This only affects a single
       axes.
"""
import numpy as np
import matplotlib.pyplot as plt

x = np.linspace(0, 2 * np.pi)
offsets = np.linspace(0, 2*np.pi, 4, endpoint=False)
# Create array with shifted-sine curve along each column
yy = np.transpose([np.sin(x + phi) for phi in offsets])

plt.rc('lines', linewidth=4)
fig, (ax0, ax1) = plt.subplots(nrows=2)

plt.rc('axes', color_cycle=['r', 'g', 'b', 'y'])
ax0.plot(yy)
ax0.set_title('Set default color cycle to rgby')

ax1.set_color_cycle(['c', 'm', 'y', 'k'])
ax1.plot(yy)
ax1.set_title('Set axes color cycle to cmyk')

# Tweak spacing between subplots to prevent labels from overlapping
plt.subplots_adjust(hspace=0.3)
plt.show()

Keywords: python, matplotlib, pylab, example, codex (see Search examples)