annotate toolboxes/FullBNT-1.0.7/KPMtools/subv2ind.m @ 0:e9a9cd732c1e tip

first hg version after svn
author wolffd
date Tue, 10 Feb 2015 15:05:51 +0000
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wolffd@0 1 function index = subv2ind(siz,sub)
wolffd@0 2 %SUBV2IND Linear index from subscript vector.
wolffd@0 3 % SUBV2IND(SIZ,SUB) returns an equivalent single index corresponding to a
wolffd@0 4 % subscript vector for an array of size SIZ.
wolffd@0 5 % If SUB is a matrix, with subscript vectors as rows, then the result is a
wolffd@0 6 % column vector.
wolffd@0 7 %
wolffd@0 8 % This is the opposite of IND2SUBV, so that
wolffd@0 9 % SUBV2IND(SIZ,IND2SUBV(SIZ,IND)) == IND.
wolffd@0 10 %
wolffd@0 11 % See also IND2SUBV, SUB2IND.
wolffd@0 12
wolffd@0 13 %index = subv2indTest(siz,sub);
wolffd@0 14 prev_cum_size = [1 cumprod(siz(1:end-1))];
wolffd@0 15 %index = (sub-1)*prev_cum_size' + 1;
wolffd@0 16 index = sub*prev_cum_size' - sum(prev_cum_size) + 1;
wolffd@0 17