File mtt/bin/trans/ode2odess_m artifact 4c1d52ada1 part of check-in a8cce33cfa

#! /bin/sh

     ###################################### 
     ##### Model Transformation Tools #####
     ######################################

# Bourne shell script: ode2odess_m

# Transforms descriptor matrix rep to step response

# Copyright (c) P.J.Gawthrop, 1996.

###############################################################
## Version control history
###############################################################
## $Id$
## $Log$
## Revision 1.4  2000/10/17 11:07:59  peterg
## *** empty log message ***
##
## Revision 1.3  1998/05/19 19:27:04  peterg
## Zapped all the parameter stuff
##
## Revision 1.2  1996/09/13 19:40:51  peter
## Fixed problem with default paramaters.
##
## Revision 1.1  1996/09/12 19:26:57  peter
## Initial revision
##
## Revision 1.4  1996/08/16 13:04:46  peter
## Fixed problem with more than one output (y vector).
##
## Revision 1.3  1996/08/16 06:36:03  peter
## Removed u from default arg list.
##
## Revision 1.2  1996/08/15 16:24:43  peter
## Uses T in place of t to avoid name clash within function.
##
## Revision 1.1  1996/08/15 11:56:38  peter
## Initial revision
##
###############################################################

echo Creating $1_odess.m
rm -f ode2odess_m.log

Nx=`mtt_getsize $1 x` # States
Nxx=`mtt_getsize $1 xx` # States x States
Nu=`mtt_getsize $1 u` # Inputs 
Ny=`mtt_getsize $1 y` # Inputs 

$MATRIX << EOF >  ode2odess_m.log 2>mtt_error.txt

  %Read in parameters
  par = $1_numpar;

   %Read in simulation parameters
  simpar=$1_simpar;
  T = [0:simpar.dt:simpar.last];

  t=0;	%Just in case it appears in the parameter list.


  %Defaults
  if exist('T')==0
    T=[0:0.1:1]
  end;

  if exist('x0')==0
    x0 = zeros($Nx,1);
  end;

  [n,m]=size(T);
  if m>n
    T=T';
  end;

global t;
function dx=f(x)
  global t
  par = $1_numpar;
  u = $1_input(x,zeros($Ny,1),t,par);
  dx = $1_ode(x,u,t,par);;
endfunction;

i=0;
x = x0;
for t=T'
  u = $1_input(x,zeros($Ny,1),t,par);
  y(i) = $1_odeo(x,u,t,par)';
  mtt_write(t,x,y,$Nx,$Ny);   # Write it out
  x = fsolve('f',x)';
end;

i=0;
for t=T'
  i=i+1;
end;

write_matrix([T,x], '$1_odess');
write_matrix([T,y], '$1_odesso');

EOF

# Now invoke the standard error handling.
mtt_error mtt_error.txt