how can i save every generation's best position using ga
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i'm using the ga function in matlab, i want to save every generation's best position
how can i do that.becanse i cannot find
[x,fval,exitflag,output,population,scores] = ga(fitnessfcn,nvars,...)
return such values
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Tsuwei Tan
am 20 Apr. 2021
options = optimoptions('ga',..'OutputFcns',@ga_save_each_gen);
I did a simple funciton ga_save_each_gen to do so.
function [state,options,optchanged]=ga_save_each_gen(options,state,flag)
Score_gen=state.Score;
Population_gen=state.Population;
Generation_gen=state.Generation;
optchanged=[];
save(['gen_' num2str(Generation_gen,'%.4d') '.mat'],'Score_gen','Population_gen','Generation_gen')
end
Antworten (1)
A Jenkins
am 28 Mär. 2014
Use gaoptimset to change the options. Display and PlotFcns will show some detail. You may also want to look at the OutputFcns option where you can write your own custom function to collect data.
A = [1 1; -1 2; 2 1];
b = [2; 2; 3];
lb = zeros(2,1);
ga_options=gaoptimset('Display','iter','PlotFcns',@gaplotbestf);
[x,fval,exitflag,output,population,scores] = ga(@lincontest6,...
2,A,b,[],[],lb,[],[],ga_options);
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