Hi,
I have the same issue. The syntaxt page was not useful for me. I could not find my error.
function [history,searchdir] = runmultiobjfunc
% Set up shared variables with OUTFUN
history.x = [];
history.fval = [];
searchdir = [];
% call optimization
nvar = 2;
Lb = [1, 3];
Ub = [19.2, 6.27];
options = optimoptions(@gamultiobj,'OutputFcn',@outfun,...
'Display','iter', 'MaxGenerations',200,'PopulationSize',50);
xsol = gamultiobj(@objfun,nvar,[],[],[],[],Lb,Ub,options);
% Set up output function
function stop = outfun(x,optimValues,state)
stop = false;
switch state
case 'init'
hold on
case 'iter'
% Concatenate current point and objective function
% value with history. x must be a row vector.
history.fval = [history.fval; optimValues.fval];
history.x = [history.x; x];
% Concatenate current search direction with searchdir.
searchdir = [searchdir;...
optimValues.searchdirection'];
plot(x(1),x(2),'o');
% Label points with iteration number and add title.
% Add .15 to x(1) to separate label from plotted 'o'
text(x(1)+.15,x(2),...
num2str(optimValues.iteration));
title('Sequence of Points Computed by gamultiobj');
case 'done'
hold off
otherwise
end
end
end
The error is:
Error using runmultiobjfunc/outfun
Too many output arguments.
Error in gaoutput (line 39)
[state,optnew,changed] = feval(functions{i},options.OutputPlotFcnOptions,state,flag,args{i}{:});
Error in gamultiobjsolve (line 13)
[state,options] = gaoutput(FitnessFcn,options,state,currentState);
Error in gamultiobj (line 303)
[x,fval,exitFlag,output,population,scores] = gamultiobjsolve(FitnessFcn,nvars, ...
Error in runmultiobjfunc (line 15)
xsol = gamultiobj(@objfun,nvar,[],[],[],[],Lb,Ub,options);
