function planC = updatePlanIVH(planD)
% updatePlanIVH
%
% Updates the CERR planC with IVH (intensity volume histogram) field.
%
% Usuage
% planC = updatePlanIVH(planC);
%
% Copyright 2010, Joseph O. Deasy, on behalf of the CERR development team.
% 
% This file is part of The Computational Environment for Radiotherapy Research (CERR).
% 
% CERR development has been led by:  Aditya Apte, Divya Khullar, James Alaly, and Joseph O. Deasy.
% 
% CERR has been financially supported by the US National Institutes of Health under multiple grants.
% 
% CERR is distributed under the terms of the Lesser GNU Public License. 
% 
%     This version of CERR 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.
% 
% CERR 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 CERR.  If not, see <http://www.gnu.org/licenses/>.

planC = initializeCERR;
indexS = planD{end};
fields = fieldnames(indexS);
indexSNew = planC{end};

for i = 1:length(fields)
    field = fields{i};
    if ~strcmpi(field,'indexS')
        try
            planC{indexSNew.(field)} = planD{indexS.(field)};
        catch
            warning(['Unknown field "' field '"in CERR plan. Rejecting this field']);
            continue
        end
    end
end
planC{end}=indexSNew;
clear planD