Get and interpolate colors
color name in the
Integer, default is length of
Boolean, whether to visualize those colors?
supported col names: 270 ncl colors (
names(rcolors)) and 35
RColorBrewer colors (
A character vector with elements of 7 or 9 characters,
followed by the red, blue, green and optionally alpha values in
hexadecimal (after rescaling to
0 ... 255). The optional alpha
values range from
0 (fully transparent) to
R does not use ‘premultiplied alpha’.
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