?? som_ind2sub.m
字號:
function Subs = som_ind2sub(msize,inds)%SOM_IND2SUB Map grid subscripts from linear index.%% Subs = som_ind2sub(msize,inds)%% sub = som_ind2sub([10 15],44);% sub = som_ind2sub(sMap,44);% sub = som_ind2sub(sMap.msize,44);% Subs = som_ind2sub([10 15],[44 13 91]');%% Input and output arguments: % msize (struct) map or topology struct% (vector) size 1 x m, specifies the map grid size% inds (vector) size n x 1, linear indeces of n map units% % Subs (matrix) size n x m, the subscripts%% See also SOM_SUB2IND.% Contributed to SOM Toolbox vs2, February 2nd, 2000 by Juha Vesanto% http://www.cis.hut.fi/projects/somtoolbox/% Version 2.0beta juuso 300798%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%if isstruct(msize), if strcmp(msize.type,'som_map'), msize = msize.topol.msize; elseif strcmp(msize.type,'som_topol'), msize = msize.msize; else error('Invalid first argument.'); endendn = length(msize); k = [1 cumprod(msize(1:end-1))]; inds = inds - 1;for i = n:-1:1, Subs(:,i) = floor(inds/k(i))+1; inds = rem(inds,k(i)); end%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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