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function [i_var, nvar, index_uniques] = varlist_indices(sublist, list)
% returns the indices of a list of endogenous variables
%
% INPUT
% sublist [cell of char arrays] sublist of variables
% list [cell of char arrays] list of variables
%
% OUTPUT
% i_var variable indices in M_.endo_names
% nvar number of variables in varlist
% index_uniques indices of unique elements in varlist
%
% SPECIAL REQUIREMENTS
% none
% Copyright (C) 2010-2018 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 isempty(sublist)
check = [];
i_var = [];
else
[check, i_var] = ismember(sublist, list);
end
if ~all(check)
k = find(~check);
str = 'The following symbols are not endogenous variables:';
for ii = 1:length(k)
str = sprintf('%s %s', str, sublist{k(ii)});
end
error(str)
end
nvar = length(i_var);
[~, index_uniques, ~] = unique(i_var, 'first');
index_uniques = sort(index_uniques);
i_var_unique = i_var(index_uniques);
if length(i_var_unique)~=nvar
k = find(~ismember(1:nvar,index_uniques));
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)
i_var = i_var_unique;
nvar = length(i_var);
end
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