File: hotcolormap.sci

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scilab 2.4-1
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function cmap = hotcolormap(n)
//graycmap   yellow to red color map.
// Copyright INRIA
if size(n,'*')<>1|or(n<3) then
  error('hotcolormap : n must be an integer greater than 3')
end
n1=fix(3/8*n);
n2=n1
n3=n-(n1+n2)
//
cmap=[(1:n1)'/n1  zeros(n1,1)  zeros(n1,1);
      ones(n2,1)  (1:n2)'/n2   zeros(n2,1);
      ones(n3,1)  ones(n3,1)   (1:n3)'/(n3)]