How to return an additional parameter that is not part of the population nor the objective in ga MATLAB?

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Yaser Khojah 2019-5-29

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https://ww2.mathworks.cn/matlabcentral/answers/464607-how-to-return-an-additional-parameter-that-is-not-part-of-the-population-nor-the-objective-in-ga-mat

编辑： Yaser Khojah 2019-5-29

I'm looking for a way to retun an additional variable (risk) with my objective (ecnomic_value) paramter for each population (weights) in GA MATLAB. I know how rto eturn the populations (weights) and their scores(ecnomic_value) but I do not know how to return the additional variable (risk). My output function as below. Anyone can help please?

 % the output function
 function [state,options,optchanged] = gaoutfunction(options,state,flag)
    persistent state_record 
    if isempty(state_record)
      state_record = struct('Population', {}, 'Best', {}, 'Score', {});
    end
    if nargin == 0
      state = state_record;
      options = [];
      optchanged = [];
    else
      state_record(end+1) = struct('Population', state.Population, 'Best', state.Best', 'Score', state.Score);
      optchanged = false;
    end
 end 