mfbox_getsort.m

toolbox for spm 5 for data, model free analysis

function y=mfbox_getsort(t,v,type)
% Copyright by Peter Gruber 
% Signal Processing & Information Theory group
% Institute of Biophysics, University of Regensburg, Germany
% Homepage: http://research.fabian.theis.name
%           http://www-aglang.uni-regensburg.de
%
% This file is free software, subject to the 
% GNU GENERAL PUBLIC LICENSE, see gpl.txt

switch type
    case 'temporalspatial'
        w = v.*conj(v);
        y = sortit(w);
    case 'temporal'
        w = real(v).^2;
        y = sortit(w);
    case 'spatial'
        w = imag(v).^2;
        y = sortit(w);
    case 'spatialvar'
        w = imag(t).^2;
        [w,y] = sort(w,'descend');
    case 'temporalvar'
        w = real(t).^2;
        [w,y] = sort(w,'descend');
    case 'temporalspatialvar'
        w = t.*conj(t);
        [w,y] = sort(w,'descend');
    otherwise
        y = 1:size(v,2);
end

return


function y=sortit(w)

y = zeros(1,size(w,2));
ly = 0;
while (ly<min(size(w)))
    [x,yy] = max(w);
    oly = ly;
    for j=1:length(yy)
        if (ly==0 || ~any(y(1:ly)==yy(j))), ly = ly+1; y(ly) = yy(j); end
    end
    if (oly==ly || ly==length(y)), break; end
    if (ly>0), w(:,y(1:ly)) = -1; end
end
if (ly<size(w,2))
    for j=1:size(w,2)
        if (ly==0 || ~any(y(1:ly)==j)), ly = ly+1; y(ly) = j; end
    end
end