Method get_cmap

lib/matplotlib/cm.py:200–230

Return a color map specified through *cmap*. Parameters ---------- cmap : str or `~matplotlib.colors.Colormap` or None - if a `.Colormap`, return it - if a string, look it up in ``mpl.colormaps`` - if None, return the Colormap de

(self, cmap)

        self._cmaps.pop(name, None)

    def get_cmap(self, cmap):
        """
        Return a color map specified through *cmap*.

        Parameters
        ----------
        cmap : str or `~matplotlib.colors.Colormap` or None

            - if a `.Colormap`, return it
            - if a string, look it up in ``mpl.colormaps``
            - if None, return the Colormap defined in :rc:`image.cmap`

        Returns
        -------
        Colormap
        """
        # get the default color map
        if cmap is None:
            return self[mpl.rcParams["image.cmap"]]

        # if the user passed in a Colormap, simply return it
        if isinstance(cmap, colors.Colormap):
            return cmap
        if isinstance(cmap, str):
            _api.check_in_list(sorted(_colormaps), cmap=cmap)
            # otherwise, it must be a string so look it up
            return self[cmap]
        raise TypeError(
            'get_cmap expects None or an instance of a str or Colormap . ' +
            f'you passed {cmap!r} of type {type(cmap)}'
        )


# public access to the colormaps should be via `matplotlib.colormaps`. For now,