How can I obtain and view the automatic generated initial population from GA from Optimization Toolbox 5.1 (R2010b)?

I use the function GA without any given initial population and I want to view the initial population generated or produced by GA.

Answer 1

[MathWorks Support Team]

To see the intial population, one can specify or set the 'OutputFcns' property from the option used by GA. The function set by 'OutputFcns' gets called every itteration.

First write a function MATLAB file called my_view containing

function [state, options,optchanged] = my_view(options,state,flag,interval)

optchanged = false;

disp(state.Population)

end

Now set the 'OutputFcns' property to this function via

options = gaoptimset('OutputFcns',@my_view);

Finally call the GA function with this specified option

x = ga(fitnessfcn,nvars,options)