1 ## Copyright (C) 2009, 2010 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{H} =} freqresp (@var{sys}, @var{w})
20 ## Evaluate frequency response at given frequencies.
27 ## Vector of frequency values.
33 ## Array of frequency response. For a system with m inputs and p outputs, the array @var{H}
34 ## has dimensions [p, m, length (w)].
35 ## The frequency response at the frequency w(k) is given by H(:,:,k).
41 ## Author: Lukas Reichlin <lukas.reichlin@gmail.com>
42 ## Created: October 2009
45 function H = freqresp (sys, w)
47 if (nargin != 2) # case freqresp () not possible
51 if (! is_real_vector (w)) # catches freqresp (sys, sys) and freqresp (w, sys) as well
52 error ("freqresp: second argument must be a real vector");
55 H = __freqresp__ (sys, w);