📄 spher.m
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% spher() - return the sphering matrix for given input data%% Usage:%% >> sphere_matrix = spher(data);%% Reference: T. Bell (1996) - - -%% S. Makeig CNL / Salk Institute, La Jolla CA 7-17-97% $Log: spher.m,v $% Revision 1.1 2002/04/05 17:36:45 jorn% Initial revision%function sphere = spher(data)if nargin<1 | size(data,1)<1 help spher returnendsphere = 2.0*inv(sqrtm(cov(data'))); % return the "sphering" matrix
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