48 lines
1.5 KiB
Matlab
48 lines
1.5 KiB
Matlab
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function make_y_
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% function make_y_
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% forms oo_.endo_simul as guess values for deterministic simulations
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%
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% INPUTS
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% ...
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% OUTPUTS
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% ...
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% ALGORITHM
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% ...
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% SPECIAL REQUIREMENTS
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% none
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%
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%
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% part of DYNARE, copyright Dynare Team (1996-2007)
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% Gnu Public License.
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global M_ options_ oo_ ys0_
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options_ = set_default_option(options_,'periods',0);
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if isempty(oo_.steady_state)
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oo_.steady_state = zeros(M_.endo_nbr,1);
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end
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if isempty(oo_.endo_simul)
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if isempty(ys0_)
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oo_.endo_simul = [oo_.steady_state*ones(1,M_.maximum_lag+options_.periods+M_.maximum_lead)];
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else
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oo_.endo_simul = [ys0_*ones(1,M_.maximum_lag) oo_.steady_state*ones(1,options_.periods+M_.maximum_lead)];
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end
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elseif size(oo_.endo_simul,2) < M_.maximum_lag+M_.maximum_lead+options_.periods
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if size(oo_.exo_simul)
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oo_.endo_simul = [oo_.endo_simul ...
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oo_.steady_state*ones(1,M_.maximum_lag+options_.periods+M_.maximum_lead-size(oo_.endo_simul,2),1)];
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else
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%% A linear approximation is used to initiate the solution.
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oldopt = options_;
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options_.order = 1;
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dr = oo_.dr;
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dr.ys = oo_.steady_state;
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[dr,info,M_,options_,oo_]=dr1(dr,0,M_,options_,oo_);
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exogenous_variables = zeros(M_.maximum_lag+options_.periods+M_.maximum_lead-size(oo_.endo_simul,2)+1,0);
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y0 = oo_.endo_simul(:,1:M_.maximum_lag);
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oo_.endo_simul=simult_(y0,dr,exogenous_variables,1);
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options_ = oldopt;
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end
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end |