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function product = Reaction_getProduct(SBMLReaction, index)
% product = Reaction_getProduct(SBMLReaction, index)
%
% Takes
%
% 1. SBMLReaction, an SBML Reaction structure
% 2. index, an integer representing the index of SBML Product structure
%
% Returns
%
% 1. the SBML Product structure at the indexed position
%
%<!---------------------------------------------------------------------------
% This file is part of SBMLToolbox. Please visit http://sbml.org for more
% information about SBML, and the latest version of SBMLToolbox.
%
% Copyright (C) 2009-2012 jointly by the following organizations:
% 1. California Institute of Technology, Pasadena, CA, USA
% 2. EMBL European Bioinformatics Institute (EBML-EBI), Hinxton, UK
%
% Copyright (C) 2006-2008 jointly by the following organizations:
% 1. California Institute of Technology, Pasadena, CA, USA
% 2. University of Hertfordshire, Hatfield, UK
%
% Copyright (C) 2003-2005 jointly by the following organizations:
% 1. California Institute of Technology, Pasadena, CA, USA
% 2. Japan Science and Technology Agency, Japan
% 3. University of Hertfordshire, Hatfield, UK
%
% SBMLToolbox is free software; you can redistribute it and/or modify it
% under the terms of the GNU Lesser General Public License as published by
% the Free Software Foundation. A copy of the license agreement is provided
% in the file named "LICENSE.txt" included with this software distribution.
%----------------------------------------------------------------------- -->
%get level and version and check the input arguments are appropriate
[level, version] = GetLevelVersion(SBMLReaction);
if isfield(SBMLReaction, 'product')
if (~isIntegralNumber(index) || index <= 0)
error('index must be a positive integer');
elseif index <= length(SBMLReaction.product)
product = SBMLReaction.product(index);
else
error('index is out of range');
end;
else
error('product not an element on SBML L%dV%d Reaction', level, version);
end;
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