## Copyright (C) 1996, 2000, 2004, 2005, 2007 ## Auburn University. All rights reserved. ## ## ## This program 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. ## ## This program 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 this program; see the file COPYING. If not, see ## <http://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {Function File} {[@var{systype}, @var{nout}, @var{nin}, @var{ncstates}, @var{ndstates}] =} minfo (@var{inmat}) ## Determines the type of system matrix. @var{inmat} can be a varying, ## a system, a constant, and an empty matrix. ## ## @strong{Outputs} ## @table @var ## @item systype ## Can be one of: varying, system, constant, and empty. ## @item nout ## The number of outputs of the system. ## @item nin ## The number of inputs of the system. ## @item ncstates ## The number of continuous states of the system. ## @item ndstates ## The number of discrete states of the system. ## @end table ## @end deftypefn ## Author: R. Bruce Tenison <btenison@eng.auburn.edu> ## Created: July 29, 1994 ## Modified by David Clem November 13, 1994 ## Modified by A. S. Hodel July 1995 function [systype, nout, nin, ncstates, ndstates] = minfo (inmat) warning ("minfo: obsolete. Use sys2ss, sys2tf, or sys2zp."); if (nargin != 1 ) disp ("MINFO: Wrong number of arguments") systype = nout = nin = ncstates = ndstates = []; endif [rr, cc] = size (inmat); ## Check for empty matrix first! if (isempty (inmat)) systype = "empty"; nout = nin = ncstates = ndstates = 0; return ## Check for Constant matrix elseif (rr == 1 || cc == 1) systype = "constant"; nout = nin = ncstates = ndstates = 1; return ## Check for system type matrix elseif (inmat(rr,cc) == -Inf) systype = "system"; ncstates = inmat(1,cc); ndstates = inmat(rr,1); nstates = ncstates + ndstates; nout = rr - nstates - 1; nin = cc - nstates - 1; ## Check for Varying type matrix elseif (inmat(rr,cc) == Inf) systype = "varying"; npoints = inmat(rr,cc-1); nin = cc - 1; nout = rr / npoints; nstates = 0; ## Must be a standard matrix else systype = "constant"; nin = cc; nout = rr; ncstates = 0; ndstates = 0; endif endfunction

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