MATLAB: Fmincon exitflag=0; MaxIter=3000; output.iterations=277

fmincon iteration countsMATLABOptimization Toolbox

fmincon gives me command window warnings that MaxIter is exceeded and returns the correct exitflag. But the returned iteration count is well below MaxIter.

Running MatLab R2014a.

Any idea what is going on?

Rob B.

Best Answer

I am not sure what is going on here. Can you show us your options, and the way you called fmincon? I am also interested in seeing ALL of the fmincon output.

Alan Weiss

MATLAB mathematical toolbox documentation

Related Solutions

MATLAB: How to change the ‘MaxIterations’ option in matlab ‘createOptimProblem(’fmincon’,……….)’

You need to do this,

opts=optimoptions('fmincon', 'MaxFunctionEvaluations',3000);
problem = createOptimProblem('fmincon','x0',x0,...
    'objective',objective,'lb',lb,'ub',ub,'nonlcon',constfunc,'options',opts);

MATLAB: Fmincon works but GA won’t work

In general, ga is not as reliable a solver as fmincon. So if you have smooth objective and constraints, you should use fmincon. See Table for Choosing a Solver.