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Cosmetic change in var_sample_moments + Removed one global. 

git-svn-id: https://www.dynare.org/svn/dynare/dynare_v4@1880 ac1d8469-bf42-47a9-8791-bf33cf982152
time-shift
adjemian 2008-06-17 21:44:00 +00:00
parent 2a632d2efc
commit 8ba344b786
3 changed files with 26 additions and 24 deletions
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3
matlab/PosteriorIRF.m
View File

@ -116,7 +116,8 @@ if MAX_nirfs_dsgevar
stock_irf_bvardsge = zeros(options_.irf,nvobs,M_.exo_nbr,B);
end
[mYY,mXY,mYX,mXX,Ydata,Xdata] = ...
var_sample_moments(options_.first_obs,options_.first_obs+options_.nobs-1,options_.varlag,-1);
var_sample_moments(options_.first_obs,options_.first_obs+options_.nobs-1,...
options_.varlag,-1,options_.datafile,options_.varobs);
NumberOfLags = options_.varlag;
NumberOfLagsTimesNvobs = NumberOfLags*nvobs;
if options_.noconstant

11
matlab/dynare_estimation.m
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@ -257,11 +257,16 @@ end
%% compute sample moments if needed (bvar-dsge)
if options_.bvar_dsge~isempty(strmatch('dsge_prior_weight',M_.param_names))
if options_.noconstant
evalin('base',['[mYY,mXY,mYX,mXX,Ydata,Xdata] = ' ...
'var_sample_moments(options_.first_obs,options_.first_obs+options_.nobs-1,options_.varlag,-1);'])
evalin('base',...
['[mYY,mXY,mYX,mXX,Ydata,Xdata] = ' ...
'var_sample_moments(options_.first_obs,' ...
'options_.first_obs+options_.nobs-1,options_.varlag,-1,' ...
'options_.datafile, options_.varobs);'])
else% The steady state is non zero ==> a constant in the VAR is needed!
evalin('base',['[mYY,mXY,mYX,mXX,Ydata,Xdata] = ' ...
'var_sample_moments(options_.first_obs,options_.first_obs+options_.nobs-1,options_.varlag,0);'])
'var_sample_moments(options_.first_obs,' ...
'options_.first_obs+options_.nobs-1,options_.varlag,0,' ...
'options_.datafile, options_.varobs);'])
end
end

36
matlab/var_sample_moments.m
View File

@ -1,7 +1,6 @@
function [YtY,XtY,YtX,XtX,Y,X] = var_sample_moments(FirstObservation,LastObservation,qlag,var_trend_order)
% function [YtY,XtY,YtX,XtX,Y,X] = var_sample_moments(FirstObservation,LastObservation,qlag,var_trend_order)
% Computes the sample moments of a VAR model.
function [YtY,XtY,YtX,XtX,Y,X] = ...
var_sample_moments(FirstObservation,LastObservation,qlag,var_trend_order,datafile,varobs)
% Computes the sample moments of a VAR model.
%
% The VAR(p) model is defined by:
%
@ -49,15 +48,12 @@ function [YtY,XtY,YtX,XtX,Y,X] = var_sample_moments(FirstObservation,LastObserva
% o Y [double] Y a T*m matrix.
% o X [double] X a T*(mp+q) matrix.
%
% SPECIAL REQUIREMENTS
% None.
%
% part of DYNARE, copyright Dynare Team (2007)
% Gnu Public License.
global options_
X = [];
Y = [];
YtY = [];
@ -65,15 +61,15 @@ YtX = [];
XtY = [];
XtX = [];
if exist(options_.datafile)
eval(options_.datafile);
if exist(datafile)
eval(datafile);
else
eval(['load ' options_.datafile]);
eval(['load ' datafile]);
end
data = [ ];
for i=1:size(options_.varobs,1)% m is equal to options_.varobs
data = [data eval(deblank(options_.varobs(i,:)))];
for i=1:size(varobs,1)% m is equal to options_.varobs
data = [data eval(deblank(varobs(i,:)))];
end
if qlag > FirstObservation
@ -82,14 +78,14 @@ if qlag > FirstObservation
end
NumberOfObservations = LastObservation-FirstObservation+1;% This is T.
NumberOfVariables = size(options_.varobs,1);% This is m.
NumberOfVariables = size(varobs,1);% This is m.
if var_trend_order == -1% No constant no linear trend case.
X = zeros(NumberOfObservations,NumberOfVariables*qlag);
elseif var_trend_order == 0% Constant and no linear trend case.
X = zeros(NumberOfObservations,NumberOfVariables*qlag+1);
X = ones(NumberOfObservations,NumberOfVariables*qlag+1);
indx = NumberOfVariables*qlag+1;
elseif var_trend_order == 1;% Constant and linear trend case.
X = zeros(NumberOfObservations,NumberOfVariables*qlag+2);
X = ones(NumberOfObservations,NumberOfVariables*qlag+2);
indx = NumberOfVariables*qlag+1:NumberOfVariables*qlag+2;
else
disp('var_sample_moments :: trend must be equal to -1,0 or 1!')
@ -98,16 +94,16 @@ end
% I build matrices Y and X
Y = data(FirstObservation:LastObservation,:);
for t=1:NumberOfObservations
line = t + FirstObservation-1;
for lag = 1:qlag
X(t,(lag-1)*NumberOfVariables+1:lag*NumberOfVariables) = data(line-lag,:);
end
if var_trend_order == 0
X(t,indx) = 1;
elseif var_trend_order == 1
X(t,indx) = [ 1 , t ];
end
end
if (var_trend_order == 1)
X(:,end) = transpose(1:NumberOfObservations)
end
YtY = Y'*Y;