File mttroot/mtt/bin/trans/ode2odess_m artifact 68ba7effca part of check-in 080f1ef068

#! /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 1.1  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

if [ "$2" = "" ]; 
then
  PARAMS='T=[0:10]; u=ones(nu,1)*t;x0=ones(nx,1);'
  echo Using default parameter $PARAMS
  echo $PARAMS>$1_args.m
else
  PARAMS=$2;
fi

PARAMS="$PARAMS ;"


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

  %Read in parameters
  $1_numpar;

  [nx,ny,nu,nz,nyz] = $1_def;
  t=0;	%Just in case it appears in the parameter list.

  $PARAMS

  %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
 dx = $1_ode(x,t);
endfunction;

i=0;
for t=T'
  i=i+1;
  x(i,:) = fsolve('f',x0)';
end;

i=0;
for t=T'
  i=i+1;
  y(i,:) = $1_odeo(x(i,:),t)';
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