X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?p=CreaPhase.git;a=blobdiff_plain;f=octave_packages%2Fcontrol-2.3.52%2F%40lti%2F__lti_group__.m;fp=octave_packages%2Fcontrol-2.3.52%2F%40lti%2F__lti_group__.m;h=412bbe60a54f6f233e3cf9e42cd27ded76904d61;hp=0000000000000000000000000000000000000000;hb=c880e8788dfc484bf23ce13fa2787f2c6bca4863;hpb=1705066eceaaea976f010f669ce8e972f3734b05

diff --git a/octave_packages/control-2.3.52/@lti/__lti_group__.m b/octave_packages/control-2.3.52/@lti/__lti_group__.m
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+++ b/octave_packages/control-2.3.52/@lti/__lti_group__.m
@@ -0,0 +1,51 @@
+## Copyright (C) 2009   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 -*-
+## Block diagonal concatenation of two LTI models.
+## This file is part of the Model Abstraction Layer.
+## For internal use only.
+
+## Author: Lukas Reichlin <lukas.reichlin@gmail.com>
+## Created: September 2009
+## Version: 0.1
+
+function retlti = __lti_group__ (lti1, lti2)
+
+  retlti = lti ();
+
+  retlti.inname = [lti1.inname;
+                   lti2.inname];
+
+  retlti.outname = [lti1.outname;
+                    lti2.outname];
+
+  if (lti1.tsam == lti2.tsam)
+    retlti.tsam = lti1.tsam;
+  elseif (lti1.tsam == -2)
+    retlti.tsam = lti2.tsam;
+  elseif (lti2.tsam == -2)
+    retlti.tsam = lti1.tsam;
+  elseif (lti1.tsam == -1 && lti2.tsam > 0)
+    retlti.tsam = lti2.tsam;
+  elseif (lti2.tsam == -1 && lti1.tsam > 0)
+    retlti.tsam = lti1.tsam;
+  else
+    error ("lti_group: systems must have identical sampling times");
+  endif
+
+endfunction
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