function colormatrix=default_seismic_colormap
% Create the color matrix for the default seismic color display
%
% Written by: E. Rietsch: February 23, 2004
% Last updated:
%
%              colormatrix=default_seismic_colormap
% OUTPUT
% colormatrix  three-column color matrix

nc=32;
up=(0:nc-1)'/nc;
down=up(end:-1:1);
eins=ones(nc,1);

colormatrix=[up,up,eins;eins,down,down]; 
