function newmap=mapcontrast(map, c)
%MAPCONTRAST Contrast the colormap

%
% Copyright (c) 1995 by Claudio Rivetti and Mark Young
% claudio@alice.uoregon.edu,    mark@alice.uoregon.edu
%

global MapSize

if nargin>2
  error('Too many input arguments.');
end

if nargin<1
  c=0;
end

if c<0 | c>10
  error('Input argument must be between 0 and 10');
end

ab=round(MapSize*(1-c*0.09));
bc=MapSize-ab;

x=1:(MapSize/ab):MapSize;
abmap=map(x,:);

last=abmap(length(abmap),:);

bcmap=[zeros(bc,1)+last(1) zeros(bc,1)+last(2) zeros(bc,1)+last(3)];

newmap=[abmap;bcmap];

return