home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
OS/2 Shareware BBS: 10 Tools
/
10-Tools.zip
/
octa21fb.zip
/
octave
/
SCRIPTS.ZIP
/
scripts.fat
/
control
/
syschtsa.m
< prev
next >
Wrap
Text File
|
1999-12-24
|
2KB
|
49 lines
## Copyright (C) 1996 Auburn University. All Rights Reserved.
##
## This file is part of Octave.
##
## Octave 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 2, or (at your option) any
## later version.
##
## Octave 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 Octave; see the file COPYING. If not, write to the Free
## Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA.
## -*- texinfo -*-
## @deftypefn {Function File } { retsys =} syschtsa ( sys,tsam )
## This function changes the sampling time (tsam) of the system. Exits with
## an error if sys is purely continuous time.
## @end deftypefn
function retsys = syschtsa (sys, tsam)
## Written by John Ingram August 1996
if (nargin != 2)
usage("retsys = syschtsa(sys,tsam)");
elseif (!is_struct(sys))
error("sys must be in system data structure form");
elseif(!is_scal(tsam))
disp("syschtsa:")
tsam
error("tsam must be a scalar")
elseif ( ! (is_sampl(tsam) | (tsam == 0) ) )
error("tsam must be real, scalar, and greater than zero");
elseif (sysgetts(sys) == 0)
[nc,nz,mm,pp] = sysdimen(sys);
warning("syschtsa: continuous system (nc=%d, nz=%d, mm=%d, pp=%d)", ...
nc,nz,mm,pp);
warning("syschtsa: The system is continuous, use c2d to make the system discrete");
endif
retsys = sys;
retsys.tsam = tsam;
endfunction