__init__(self, boundaries, ncolors, clip=False, *, extend='neither')
boundaries defines the edges of bins, and data falling within a bin is mapped to the color with the same index.
If the number of bins, including any extensions, is less than ncolors, the color index is chosen by linear interpolation, mapping the [0, nbins - 1]
range onto the [0, ncolors - 1]
range.
Monotonically increasing sequence of at least 2 boundaries.
Number of colors in the colormap to be used.
If clip is True
, out of range values are mapped to 0 if they are below boundaries[0]
or mapped to ncolors - 1
if they are above boundaries[-1]
.
If clip is False
, out of range values are mapped to -1 if they are below boundaries[0]
or mapped to ncolors if they are above boundaries[-1]
. These are then converted to valid indices by Colormap.__call__
.
Extend the number of bins to include one or both of the regions beyond the boundaries. For example, if extend
is 'min', then the color to which the region between the first pair of boundaries is mapped will be distinct from the first color in the colormap, and by default a ~matplotlib.colorbar.Colorbar
will be drawn with the triangle extension on the left or lower end.
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