MATLAB: Matrix manipulation

matrix

how to take matrix element (i.e row) one by one and save each new matrices in a new variable example:
original matrix: a=[2 6 7 8;4 5 3 7;9 7 6 9;5 3 1 9]
become: a1=[4 5 3 7;9 7 6 9;5 3 1 9] a2=[2 6 7 8;9 7 6 9;5 3 1 9] a3=[2 6 7 8;4 5 3 7;5 3 1 9] a4=[2 6 7 8;4 5 3 7;9 7 6 9]

Best Answer

a=[2 6 7 8;4 5 3 7;9 7 6 9;5 3 1 9]
id = ~eye(size(a));
h = arrayfun(@(i1)a(id(:,i1),:),1:size(id,2),'un',0);
[out,idxout] = min(cellfun(@(x)det(x*x.'),h))
OR
a=[2 6 7 8;4 5 3 7;9 7 6 9;5 3 1 9]
id = ~eye(size(a));
s = size(a,2);
h = zeros(s*[1 1 1] - [1 0 0]);
kt = zeros(s,1);
for j1 = 1:s
    k = a(id(:,j1),:);
    kt(j1) = det(k*k.');
    h(:,:,j1) = k;
end
[out,outidx] = min(kt)
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