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% SUBSREF  [STK internal]
%
% CALL: value = subsref (kreq, idx)
%
%    implements 'subsref' for stk_kreq_qr objects.
%
% See also: subsref

% Copyright Notice
%
%    Copyright (C) 2013, 2014 SUPELEC
%
%    Author:  Julien Bect  <julien.bect@centralesupelec.fr>

% Copying Permission Statement
%
%    This file is part of
%
%            STK: a Small (Matlab/Octave) Toolbox for Kriging
%               (http://sourceforge.net/projects/kriging)
%
%    STK 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.
%
%    STK 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 STK.  If not, see <http://www.gnu.org/licenses/>.

function value = subsref (kreq, idx)

if strcmp (idx(1).type, '.')
    
    value = get (kreq, idx(1).subs);
    
    if length(idx) > 1
        value = subsref(value, idx(2:end));
    end
    
else
    
    stk_error('Illegal indexing.', 'IllegalIndexing');
    
end

end % function