?? submtx.m
字號:
% MTX = subMtx(VEC, DIMENSIONS, START_INDEX)
%
% Reshape a portion of VEC starting from START_INDEX (optional,
% default=1) to the given dimensions.
% Eero Simoncelli, 6/96.
function mtx = subMtx(vec, sz, offset)
if (exist('offset') ~= 1)
offset = 1;
end
vec = vec(:);
sz = sz(:);
if (size(sz,1) ~= 2)
error('DIMENSIONS must be a 2-vector.');
end
mtx = reshape( vec(offset:offset+prod(sz)-1), sz(1), sz(2) );
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