subsasgn.m

剑桥大学用于线性和双线性动力学系统辨识的工具箱

function model = subsasgn(model,s,val)
%BILIN/SUBSASGN   Subscript assigning method for BILIN object.
%
% CUED System Identification Toolbox.
% Cambridge University Engineering Department.
% Copyright (C) 1998-2002. All Rights Reserved.

% Version 1.00, Date: 01/06/2002
% Created by H. Chen and E.C. Kerrigan.

[n,m]=size(model.B);
p=size(model.C,1);

switch s.type
 case '.'
  switch upper(s.subs)
   case 'A'
	if size(val,1) == n & size(val,2) == n
	  model.A = val;
	else
	  error('The dimension of A is incompatible with the BILIN object.')
	end
   case 'B'
	if size(val,1) == n & size(val,2) == m
	  model.B = val;
	else
	  error('The dimension of B is incompatible with the BILIN object.')
	end
   case 'C'
	if size(val,1) == p & size(val,2) == n
	  model.C = val;
	else
	  error('The dimension of C is incompatible with the BILIN object.')
	end
   case 'D'
	if size(val,1) == p & size(val,2) == m
	  model.D = val;
	else
	  error('The dimension of D is incompatible with the BILIN object.')
	end
   case 'N'
	if size(val,1) == n & size(val,2) == n*m
	  model.N = val;
	else
	  error('The dimension of N is incompatible with the BILIN object.')
	end
   case {'X0','X'}
	if size(val,1) == n & size(val,2) == 1
	  model.X0 = val;
	else
	  error('The dimension of X0 is incompatible with the BILIN object.')
	end
   case {'TS','T'}
	if size(val,1) == 1 & size(val,2) == 1
	  if val > 0
		model.Ts = val;
	  else
		error('Only positive values of Ts are allowed.')
	  end
	else
	  error('The dimension of Ts is incompatible with the BILIN object.')
	end
   otherwise
	error('Invalid subscript referencing.')
  end
 otherwise
  error('Invalid subscript referencing.')
end

% *** last line of subsasgn.m ***