Reset One Option

Create options with some nondefault settings. Examine the MaxIterations setting.

options = optimoptions('fmincon','Algorithm','sqp','MaxIterations',2e4,...
    'SpecifyObjectiveGradient',true);
options.MaxIterations

ans =

       20000

Reset the MaxIterations option to its default value.

options2 = resetoptions(options,'MaxIterations');
options2.MaxIterations

ans =

   400

The default value of the MaxIterations option is 400 for the 'sqp' algorithm.