1 ## Copyright (C) 2009 Lukas F. Reichlin
3 ## This file is part of LTI Syncope.
5 ## LTI Syncope is free software: you can redistribute it and/or modify
6 ## it under the terms of the GNU General Public License as published by
7 ## the Free Software Foundation, either version 3 of the License, or
8 ## (at your option) any later version.
10 ## LTI Syncope is distributed in the hope that it will be useful,
11 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 ## GNU General Public License for more details.
15 ## You should have received a copy of the GNU General Public License
16 ## along with LTI Syncope. If not, see <http://www.gnu.org/licenses/>.
19 ## @deftypefn {Function File} {@var{sys} =} connect (@var{sys}, @var{cm}, @var{inputs}, @var{outputs})
20 ## Arbitrary interconnections between the inputs and outputs of an LTI model.
23 ## Author: Lukas Reichlin <lukas.reichlin@gmail.com>
24 ## Created: October 2009
27 function sys = connect (sys, cm, in_idx, out_idx)
34 [cmrows, cmcols] = size (cm);
36 ## TODO: proper argument checking
37 ## TODO: name-based interconnections
38 ## TODO: replace nested for-if statement
40 if (! is_real_matrix (cm))
41 error ("connect: second argument must be a matrix with real coefficients");
46 out = cm(:, 2:cmcols);
51 M(in(a, 1), abs (out(a, b))) = sign (out(a, b));
56 sys = __sys_connect__ (sys, M);
57 sys = __sys_prune__ (sys, out_idx, in_idx);