class matplotlib.colors.Colormap(name, N=256)[source]

Bases: object

Baseclass for all scalar to RGBA mappings.

Typically Colormap instances are used to convert data values (floats) from the interval [0, 1] to the RGBA color that the respective Colormap represents. For scaling of data into the [0, 1] interval see matplotlib.colors.Normalize. It is worth noting that subclasses make heavy use of this data->normalize->map-to-color processing chain.


The name of the colormap.


The number of rgb quantization levels.

colorbar_extend = None

When this colormap exists on a scalar mappable and colorbar_extend is not False, colorbar creation will pick up colorbar_extend as the default value for the extend keyword in the matplotlib.colorbar.Colorbar constructor.

reversed(self, name=None)[source]

Make a reversed instance of the Colormap.


Function not implemented for base class.

namestr, optional

The name for the reversed colormap. If it's None the name will be the name of the parent colormap + "_r".

set_bad(self, color='k', alpha=None)[source]

Set color to be used for masked values.

set_over(self, color='k', alpha=None)[source]

Set the color for high out-of-range values when norm.clip = False.

set_under(self, color='k', alpha=None)[source]

Set the color for low out-of-range values when norm.clip = False.

Examples using matplotlib.colors.Colormap