get_reorder

GET_REORDER    Returns A with one of its dimensions indexed.

   B = GET_REORDER(A, IDX, DIM)

   Returns A(:, ..., :, IDX, :, ..., :), where DIM determines
   in which dimension to place the IDX.

   See also SET_REORDER.

0001 function B = get_reorder(A, idx, dim)
0002 %GET_REORDER    Returns A with one of its dimensions indexed.
0003 %
0004 %   B = GET_REORDER(A, IDX, DIM)
0005 %
0006 %   Returns A(:, ..., :, IDX, :, ..., :), where DIM determines
0007 %   in which dimension to place the IDX.
0008 %
0009 %   See also SET_REORDER.
0010 
0011 %   MATPOWER
0012 %   Copyright (c) 2009-2016, Power Systems Engineering Research Center (PSERC)
0013 %   by Ray Zimmerman, PSERC Cornell
0014 %
0015 %   This file is part of MATPOWER.
0016 %   Covered by the 3-clause BSD License (see LICENSE file for details).
0017 %   See http://www.pserc.cornell.edu/matpower/ for more info.
0018 
0019 ndim = ndims(A);
0020 s.type = '()';
0021 s.subs = cell(1, ndim);
0022 for k = 1:ndim
0023     if k == dim
0024         s.subs{k} = idx;
0025     else
0026         s.subs{k} = ':';
0027     end
0028 end
0029 B = subsref(A, s);