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annotate toolboxes/FullBNT-1.0.7/KPMstats/mk_unit_norm.m @ 0:e9a9cd732c1e tip

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first hg version after svn
author wolffd
date Tue, 10 Feb 2015 15:05:51 +0000
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wolffd@0 1 function B = mk_unit_norm(A)
wolffd@0 2 % MK_UNIT_NORM Make each column be a unit norm vector
wolffd@0 3 % function B = mk_unit_norm(A)
wolffd@0 4 %
wolffd@0 5 % We divide each column by its magnitude
wolffd@0 6
wolffd@0 7
wolffd@0 8 [nrows ncols] = size(A);
wolffd@0 9 s = sum(A.^2);
wolffd@0 10 ndx = find(s==0);
wolffd@0 11 s(ndx)=1;
wolffd@0 12 B = A ./ repmat(sqrt(s), [nrows 1]);
wolffd@0 13