/usr/share/dynare/matlab/transition_matrix.m is in dynare-common 4.4.1-1build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 | function [A,B] = transition_matrix(dr, varargin)
% function [A,B] = transition_matrix(dr, varargin)
% Makes transition matrices out of ghx and ghu
%
% INPUTS
% dr: structure of decision rules for stochastic simulations
% varargin: {1}: M_
%
% OUTPUTS
% A: matrix of effects of predetermined variables in linear solution (ghx)
% B: matrix of effects of shocks in linear solution (ghu)
%
% SPECIAL REQUIREMENTS
% none
% Copyright (C) 2003-2012 Dynare Team
%
% This file is part of Dynare.
%
% Dynare 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.
%
% Dynare 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 Dynare. If not, see <http://www.gnu.org/licenses/>.
if(length(varargin)<=0)
global M_
else
M_=varargin{1};
end;
exo_nbr = M_.exo_nbr;
ykmin_ = M_.maximum_endo_lag;
nx = size(dr.ghx,2);
kstate = dr.kstate;
ikx = [M_.nstatic+1:M_.nstatic+M_.nspred];
A = zeros(nx,nx);
k0 = kstate(find(kstate(:,2) <= ykmin_+1),:);
i0 = find(k0(:,2) == ykmin_+1);
A(i0,:) = dr.ghx(ikx,:);
B = zeros(nx,exo_nbr);
if(isfield(dr,'ghu'))
B(i0,:) = dr.ghu(ikx,:);
end;
for i=ykmin_:-1:2
i1 = find(k0(:,2) == i);
n1 = size(i1,1);
j = zeros(n1,1);
for j1 = 1:n1
j(j1) = find(k0(i0,1)==k0(i1(j1),1));
end
A(i1,i0(j))=eye(n1);
i0 = i1;
end
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