function datatomfile (s,var_list, names)
% function datatomfile (s,var_list)
% This optional command saves the simulation results in a text file. The name of each
% variable preceeds the corresponding results. This command must follow SIMUL.
% 
% INPUTS
%    s:              data file name
%    var_list:       vector of selected endogenous variables
%    names:          vector of strings (alternative names for the endogenous variables in the data file)
%
% OUTPUTS
%    none
%
% SPECIAL REQUIREMENTS
%    none

% Copyright (C) 2001-2010 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/>.

global M_ oo_

% Open the data file. 
sm=[s,'.m'];
fid=fopen(sm,'w') ;

if nargin < 2 || size(var_list,1) == 0
    var_list = M_.endo_names(1:M_.orig_endo_nbr,:);
end

n = size(var_list,1);
ivar=zeros(n,1);

if nargin==3
    if ~isequal(size(var_list,1),n)
        error('datatomfile:: Second and third arguments must have the same number of rows (variables)!')
    end
else
    names = var_list;
end

% Get indices for the endogenous variables.
for i=1:n
    i_tmp = strmatch(var_list(i,:),M_.endo_names,'exact');
    if isempty(i_tmp)
        error (['One of the specified variables does not exist']) ;
    else
        ivar(i) = i_tmp;
    end
end

% Save the selected data.
for i = 1:n
    fprintf(fid,[strtrim(names(i,:)), ' = ['],'\n') ;
    fprintf(fid,'\n') ;
    fprintf(fid,'%15.8g\n',oo_.endo_simul(ivar(i),:)') ;
    fprintf(fid,'];\n') ;
    fprintf(fid,'\n') ;
end

% Close the data file.
fclose(fid) ;