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kaedonkers/contourf_custom_cmap_ListedColormap.py

Last active December 11, 2018 10:06
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Matplotlib: Custom cmap for controuf using ListedColormap
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contourf_custom_cmap_ListedColormap.py
"""
Example courtesy of @pp-mo
Use ListedColormap with matplotlib.pyplot.contourf to speficy colour of each filled layer.
More information can be found at:
https://matplotlib.org/1.5.3/api/colors_api.html#matplotlib.colors.ListedColormap
"""
import matplotlib.pyplot as plt
from matplotlib.colors import ListedColormap
data = np.arange(12.).reshape((3,4))
cmap = ListedColormap(('red', 'black', 'yellow', 'magenta'))
n_levels = cmap.N - 1
plt.contourf(data, n_levels, cmap=cmap)
plt.show()
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