/usr/share/octave/packages/control-2.6.2/@lti/horzcat.m is in octave-control 2.6.2-1build1.
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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 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 | ## Copyright (C) 2009-2014 Lukas F. Reichlin
##
## This file is part of LTI Syncope.
##
## LTI Syncope 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.
##
## LTI Syncope 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 LTI Syncope. If not, see <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## Horizontal concatenation of @acronym{LTI} objects. If necessary, object conversion
## is done by sys_group. Used by Octave for "[sys1, sys2]".
## Author: Lukas Reichlin <lukas.reichlin@gmail.com>
## Created: September 2009
## Version: 0.2
function sys = horzcat (sys, varargin)
for k = 1 : (nargin-1)
sys1 = sys;
sys2 = varargin{k};
[p1, m1] = size (sys1);
[p2, m2] = size (sys2);
if (p1 != p2)
error ("lti: horzcat: number of system outputs incompatible: [(%dx%d), (%dx%d)]",
p1, m1, p2, m2);
endif
sys = __sys_group__ (sys1, sys2);
out_scl = [eye(p1), eye(p2)];
sys = out_scl * sys;
endfor
endfunction
## Rowwise concatenation of two systems in state-space form
## Test from SLICOT AB05OD
%!shared M, Me
%! A1 = [ 1.0 0.0 -1.0
%! 0.0 -1.0 1.0
%! 1.0 1.0 2.0 ];
%!
%! B1 = [ 1.0 1.0 0.0
%! 2.0 0.0 1.0 ].';
%!
%! C1 = [ 3.0 -2.0 1.0
%! 0.0 1.0 0.0 ];
%!
%! D1 = [ 1.0 0.0
%! 0.0 1.0 ];
%!
%! A2 = [-3.0 0.0 0.0
%! 1.0 0.0 1.0
%! 0.0 -1.0 2.0 ];
%!
%! B2 = [ 0.0 -1.0 0.0
%! 1.0 0.0 2.0 ].';
%!
%! C2 = [ 1.0 1.0 0.0
%! 1.0 1.0 -1.0 ];
%!
%! D2 = [ 1.0 1.0
%! 0.0 1.0 ];
%!
%! sys1 = ss (A1, B1, C1, D1);
%! sys2 = ss (A2, B2, C2, D2);
%! sys = [sys1, sys2];
%! [A, B, C, D] = ssdata (sys);
%! M = [A, B; C, D];
%!
%! Ae = [ 1.0000 0.0000 -1.0000 0.0000 0.0000 0.0000
%! 0.0000 -1.0000 1.0000 0.0000 0.0000 0.0000
%! 1.0000 1.0000 2.0000 0.0000 0.0000 0.0000
%! 0.0000 0.0000 0.0000 -3.0000 0.0000 0.0000
%! 0.0000 0.0000 0.0000 1.0000 0.0000 1.0000
%! 0.0000 0.0000 0.0000 0.0000 -1.0000 2.0000 ];
%!
%! Be = [ 1.0000 2.0000 0.0000 0.0000
%! 1.0000 0.0000 0.0000 0.0000
%! 0.0000 1.0000 0.0000 0.0000
%! 0.0000 0.0000 0.0000 1.0000
%! 0.0000 0.0000 -1.0000 0.0000
%! 0.0000 0.0000 0.0000 2.0000 ];
%!
%! Ce = [ 3.0000 -2.0000 1.0000 1.0000 1.0000 0.0000
%! 0.0000 1.0000 0.0000 1.0000 1.0000 -1.0000 ];
%!
%! De = [ 1.0000 0.0000 1.0000 1.0000
%! 0.0000 1.0000 0.0000 1.0000 ];
%!
%! Me = [Ae, Be; Ce, De];
%!
%!assert (M, Me, 1e-4);
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