X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?p=CreaPhase.git;a=blobdiff_plain;f=octave_packages%2Flinear-algebra-2.2.0%2F%40blksparse%2Fsparse.m;fp=octave_packages%2Flinear-algebra-2.2.0%2F%40blksparse%2Fsparse.m;h=d6d32f4a80c8ab55154279c12426fe26e807d89e;hp=0000000000000000000000000000000000000000;hb=c880e8788dfc484bf23ce13fa2787f2c6bca4863;hpb=1705066eceaaea976f010f669ce8e972f3734b05

diff --git a/octave_packages/linear-algebra-2.2.0/@blksparse/sparse.m b/octave_packages/linear-algebra-2.2.0/@blksparse/sparse.m
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+## 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} sparse (@var{x})
+## Converts a block sparse matrix to (built-in) sparse.
+## @end deftypefn
+
+function sp = sparse (s)
+  bsiz = s.bsiz;
+  i = repmat (shiftdim (s.i, -2), bsiz);
+  j = repmat (shiftdim (s.j, -2), bsiz);
+  [iofs, jofs] = ndgrid (1:bsiz(1), 1:bsiz(2));
+  k = ones (1, size (s.sv, 3));
+  i = sub2ind ([bsiz(1), s.siz(1)], iofs(:,:,k), i);
+  j = sub2ind ([bsiz(2), s.siz(2)], jofs(:,:,k), j);
+
+  sp = sparse (i(:), j(:), s.sv(:), bsiz(1)*s.siz(1), bsiz(2)*s.siz(2));
+endfunction