lans_center.m

模式识别工具包

%	lans_center	- Center data at mean
%	
%	[cdata,vmean]	= lans_center(data)
%
%	_____OUTPUTS____________________________________________________________
%	cdata	zero mean data				(col vectors)
%	vmean	mean of data				(col vector)
%
%	_____INPUTS_____________________________________________________________
%	data	D-dimensional data			(col vectors)
%
%	_____NOTES______________________________________________________________
%
%	(C) 1999.08.10 Kui-yu Chang
%	http://lans.ece.utexas.edu/~kuiyu

%	This program is free software; you can redistribute it and/or modify
%	it under the terms of the GNU General Public License as published by
%	the Free Software Foundation; either version 2 of the License, or
%	(at your option) any later version.
%
%	This program is distributed in the hope that it will be useful,
%	but WITHOUT ANY WARRANTY; without even the implied warranty of
%	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
%	GNU General Public License for more details.
%
%	You should have received a copy of the GNU General Public License
%	along with this program; if not, write to the Free Software
%	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
%	or check
%			http://www.gnu.org/


function	[cdata,vmean]	= lans_center(data)

N	= size(data,2);

vmean	= mean(data')';
cdata	= data-vmean*ones(1,N);