1 ## Copyright (C) 2010 Soren Hauberg
3 ## This program is free software; you can redistribute it and/or modify
4 ## it under the terms of the GNU General Public License as published by
5 ## the Free Software Foundation; either version 3, or (at your option)
8 ## This program is distributed in the hope that it will be useful, but
9 ## WITHOUT ANY WARRANTY; without even the implied warranty of
10 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 ## General Public License for more details.
13 ## You should have received a copy of the GNU General Public License
14 ## along with this file. If not, see <http://www.gnu.org/licenses/>.
17 ## @deftypefn {Function File} sparse (@var{KP})
18 ## Return the Kronecker product @var{KP} represented as a sparse matrix.
19 ## @seealso{sparse, @@kronprod/issparse, @@kronprod/full}
22 function retval = sparse (KP)
27 if (!isa (KP, "kronprod"))
28 error ("sparse: input argument must be of class 'kronprod'");
31 ## XXX: Would this be better? kron (sparse (KP.A), sparse (KP.B)))
32 retval = sparse (kron (KP.A, KP.B));