Documentation Center

  • Trials
  • Product Updates

Set and Change Options

The recommended way to set options is to use the optimoptions function. For example, to set the fmincon algorithm to sqp, set iterative display, and set a small value of the TolCon tolerance:

options = optimoptions('fmincon',...
    'Algorithm','sqp','Display','iter','TolCon',1e-12);

    Note:   Use optimset instead of optimoptions for the fminbnd, fminsearch, fzero, and lsqnonneg solvers. These are the solvers that do not require an Optimization Toolbox™ license.

Change options as follows:

  • Dot notation. For example,

    options.TolX = 1e-10;
  • optimoptions. For example,

    options = optimoptions(options,'TolX',1e-10);

Ensure that you pass options in your solver call. For example,

[x,fval] = fmincon(@objfun,x0,[],[],[],[],lb,ub,@nonlcon,options);

You can also set and change options using the Optimization App.

Was this topic helpful?