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function [i_var, nvar, index_unique_present] = varlist_indices(sublist, list, nocheck_dummy)
% returns the indices of a list of variables
%
% INPUT
% sublist [cell of char arrays] sublist of variables
% list [cell of char arrays] list of variables
%
% OUTPUT
% i_var variable indices in list
% nvar number of unique variables contained in list
% index_uniques indices of unique and present elements in sublist
%
% SPECIAL REQUIREMENTS
% none
% Copyright (C) 2010-2021 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 <https://www.gnu.org/licenses/>.
if nargin<3
nocheck_dummy=0;
end
if isempty(sublist)
check = [];
i_var = [];
else
[check, i_var] = ismember(sublist, list);
end
indices_not_present=[];
if ~all(check)
k_not_present = find(~check);
if ~nocheck_dummy
str = 'The following symbols are not endogenous variables:';
for ii = 1:length(k_not_present)
str = sprintf('%s %s', str, sublist{k_not_present(ii)});
end
error(str)
else
indices_not_present=find(i_var==0);
end
end
nvar_present = length(i_var(check));
[~, index_unique, ~] = unique(i_var, 'first');
index_unique_present = index_unique(~ismember(index_unique,indices_not_present));
index_unique_present = sort(index_unique_present);
i_var_unique_present = i_var(index_unique_present);
if length(i_var_unique_present)~=nvar_present
k = find(~ismember((1:length(i_var))',index_unique_present) & i_var~=0);
str = 'The following symbols are specified twice in the variable list and are considered only once:';
for ii = 1:length(k)
str = sprintf('%s %s', str, sublist{k(ii)});
end
warning('%s\n', str)
end
i_var = i_var_unique_present;
nvar = length(i_var);
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