/usr/share/octave/packages/3.2/linear-algebra-2.1.0/@blksparse/transpose.m is in octave-linear-algebra 2.1.0-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | ## Copyright (C) 2010 VZLU Prague
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 3 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Octave; see the file COPYING. If not, see
## <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} transpose (@var{x})
## Returns the transpose of a block sparse matrix @var{x}.
## @end deftypefn
function y = transpose (x)
y.siz = x.siz(2:-1:1);
y.bsiz = x.bsiz(2:-1:1);
[y.j,idx] = sort (x.i);
y.i = x.j(idx);
y.sv = permute (x.sv(:,:,idx), [2,1,3]);
endfunction
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