Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / control-2.3.52 / @ss / __set__.m

diff --git a/octave_packages/control-2.3.52/@ss/__set__.m b/octave_packages/control-2.3.52/@ss/__set__.m
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+++ b/octave_packages/control-2.3.52/@ss/__set__.m
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+## Copyright (C) 2009, 2010, 2011   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 -*-
+## Set or modify properties of SS objects.
+
+## Author: Lukas Reichlin <lukas.reichlin@gmail.com>
+## Created: October 2009
+## Version: 0.3
+
+function sys = __set__ (sys, prop, val)
+
+  switch (prop)      # {<internal name>, <user name>}
+    case "a"
+      __ss_dim__ (val, sys.b, sys.c, sys.d);
+      sys.a = val;
+
+    case "b"
+      __ss_dim__ (sys.a, val, sys.c, sys.d);
+      sys.b = val;
+
+    case "c"
+      __ss_dim__ (sys.a, sys.b, val, sys.d);
+      sys.c = val;
+
+    case "d"
+      __ss_dim__ (sys.a, sys.b, sys.c, val);
+      sys.d = val;
+
+    case "e"
+      if (isempty (val))
+        sys.e = [];  # avoid [](nx0) or [](0xn)
+      else
+        __ss_dim__ (sys.a, sys.b, sys.c, sys.d, val);
+        sys.e = val;
+      endif
+
+    case {"stname", "statename"}
+      n = rows (sys.a);
+      sys.stname = __adjust_labels__ (val, n);
+
+    case "scaled"
+      if (isscalar (val))
+        sys.scaled = logical (val);
+      else
+        error ("ss: set: property 'scaled' must be a logical value");
+      endif
+
+    otherwise
+      error ("ss: set: invalid property name");
+
+  endswitch
+
+endfunction
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