115 lines
4.0 KiB
Matlab
115 lines
4.0 KiB
Matlab
function [info,description] = check_prior_analysis_data(type,M_)
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% function [info,description] = check_prior_analysis_data(type,M_)
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% Checks the status of prior analysis and in particular if files need to be
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% created or updated; called by prior_analysis.m
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%
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% Inputs:
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% type [string] name of the posterior moment considered
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% M_ [structure] Dynare model structure
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%
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% Outputs:
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% info [scalar] return code
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% info = 1; % prior_sampler has to be called first.
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% info = 2; % _prior_draws files have to be updated.
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% info = 3; % Ok! prior draws files are up to date ;
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% info = 4; % prior draws have to be processed.
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% info = 5; % prior data files have to be updated.
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% info = 6; % Ok (nothing to do ;-)
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% description [string] Message corresponding to info
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% Copyright © 2009-2017 Dynare Team
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%
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% This file is part of Dynare.
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%
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% Dynare is free software: you can redistribute it and/or modify
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% it under the terms of the GNU General Public License as published by
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% the Free Software Foundation, either version 3 of the License, or
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% (at your option) any later version.
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%
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% Dynare is distributed in the hope that it will be useful,
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% but WITHOUT ANY WARRANTY; without even the implied warranty of
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% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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% GNU General Public License for more details.
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%
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% You should have received a copy of the GNU General Public License
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% along with Dynare. If not, see <https://www.gnu.org/licenses/>.
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info = 0;
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if nargout>1
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description = '';
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end
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%% Get informations about prior draws files.
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if ~exist([ M_.dname '/prior/draws'],'dir')
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disp('check_prior_analysis_data:: Can''t find any prior draws file!')
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return
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end
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prior_draws_info = dir([ M_.dname '/prior/draws/prior_draws*.mat']);
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date_of_the_last_prior_draw_file = prior_draws_info(end).datenum;
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%% Get informations about _posterior_draws files.
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if isempty(prior_draws_info)
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info = 1;
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if nargout>1
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description = 'prior_sampler has to be called.';
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end
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return
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else
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date_of_the_prior_definition = get_date_of_a_file([ M_.dname '/prior/definition.mat']);
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if date_of_the_prior_definition>date_of_the_last_prior_draw_file
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info = 2;
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if nargout>1
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description = 'prior draws files have to be updated.';
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end
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return
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else
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info = 3; % Nothing to do!
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if nargout>1
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description = 'prior draws files are up to date.';
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end
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end
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end
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%% Get informations about prior data files.
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switch type
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case 'variance'
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generic_prior_data_file_name = 'Prior2ndOrderMoments';
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case 'decomposition'
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generic_prior_data_file_name = 'PriorVarianceDecomposition';
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case 'correlation'
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generic_prior_data_file_name = 'PriorCorrelations';
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case 'conditional decomposition'
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generic_prior_data_file_name = 'PriorConditionalVarianceDecomposition';
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otherwise
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disp('This feature is not yet implemented!')
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end
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CheckPath('prior/moments',M_.dname);
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pdfinfo = dir([ M_.dname '/prior/' generic_prior_data_file_name '*']);
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if isempty(pdfinfo)
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info = 4;
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if nargout>1
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description = 'prior draws files have to be processed.';
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end
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return
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else
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number_of_the_last_prior_data_file = length(pdfinfo);
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pdfdate = pdinfo(number_of_the_last_prior_data_file).datenum;
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% /!\ REMARK /!\
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% The user can change the model or the value of a calibrated
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% parameter without changing the prior. In this case the (prior)
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% moments should be computed. But this case cannot be detected!!!
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if pdfdate<date_of_the_last_prior_draw_file
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info = 5; % prior data files have to be updated.
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if nargout>1
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description = 'prior data files have to be updated.';
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end
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else
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info = 6; % Ok (nothing to do ;-)
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if nargout>1
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description = 'prior data files are up to date.';
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end
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end
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end
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