The hotmetal color table patterned after the one used in Matlab.
is the number of color levels (default = 64).
Based on the
tim.colors function in the
fields package. The
hotmetal function has been modified
to break any dependence on code in the fields package. Spline
interpSpline) is used when the number of
requested colors is not the default.
A vector of character strings giving the colors in hexadecimal format.
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