monet.plots.cmap_discretize

monet.plots.cmap_discretize(cmap, N)

Return a discrete colormap from a continuous colormap.

Creates a new colormap by discretizing an existing continuous colormap into N distinct colors while preserving the color transitions.

Parameters:

  • cmap (str or matplotlib.colors.Colormap) – Colormap instance or registered colormap name to discretize. Example: cm.jet, ‘viridis’, etc.

  • N (int) – Number of discrete colors to use in the new colormap.

Returns:

A new colormap object with N discrete colors based on the input colormap. The name will be the original colormap name with “_N” appended.

Return type:

matplotlib.colors.LinearSegmentedColormap

Examples

>>> from numpy import arange
>>> from numpy.ma import resize
>>> from matplotlib.pyplot import imshow
>>> from matplotlib.cm import jet
>>> x = resize(arange(100), (5, 100))
>>> djet = cmap_discretize(jet, 5)
>>> imshow(x, cmap=djet)