function CN=ntu(C)
% CN=ntu(C)
% Normalize matrix C by setting the
% maximum element of each column to one
%
% version 2.01, 2/14/99 by AZ

%THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE of GMD FIRST Berlin.
%
%  The purpose of this software is the dissemination of
%  scientific work for scientific use. The commercial
%  distribution or use of this source code is prohibited. 
%  (c) 1996-1999 GMD FIRST Berlin, Andreas Ziehe 
%              - All rights reserved -


[m n]=size(C);
%if m~=n error('Matrix must be square');
%end;

for t=1:n,
 CN(:,t)=C(:,t)./max(abs(C(:,t)));
end