surrogateopt: output function

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Geopaul
Geopaul on 9 Aug 2022
Commented: Alan Weiss on 11 Aug 2022
How do we create a customize output function for the 'surrogateopt' that will show the solution at every iteration. I need am example for better understanding. Thank you.

Accepted Answer

Alan Weiss
Alan Weiss on 9 Aug 2022
Try this.
lb = [-3 -3];
ub = -lb;
opts = optimoptions('surrogateopt','OutputFcn',@listout);
obj = @(x)100*(x(2) - x(1)^2)^2 + (1 - x(1))^2;
[sol,fval] = surrogateopt(obj,lb,ub,opts)
function stop = listout(x,optimValues,state)
stop = false;
switch state
case 'iter'
nval = optimValues.funccount;
y = optimValues.currentX;
fprintf("Number of fevals = %g, x = [%g,%g]\n",nval,y(1),y(2))
end
end
Alan Weiss
MATLAB mathematical toolbox documentation
  3 Comments
Alan Weiss
Alan Weiss on 11 Aug 2022
Alan Weiss
MATLAB mathematical toolbox documentation

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