Date: Feb 25, 2013 10:50 AM
Author: Steven Lord
Subject: Re: No more fmincon messages!



"Manalap " <mujyhane@gmail.com> wrote in message
news:kga883$lok$1@newscl01ah.mathworks.com...
> When I execute mfile that contains fmincon, Matlab prints messages like
> ===============================
> Warning: To use the default trust-region-reflective algorithm
> you must supply the gradient in the objective function and set
> the GradObj option to 'on'. FMINCON will use the active-set
> algorithm instead. For information on applicable algorithms,
> see Choosing the Algorithm in the documentation.


Did you look at that section of the documentation? It should, I believe,
tell you how to select the active-set algorithm using OPTIMSET. Doing so and
passing the resulting options structure into FMINCON will avoid this
warning.

> Optimization completed because the objective function is non-decreasing in
> feasible directions, to within the default value of the function
> tolerance,
> and constraints are satisfied to within the default value of the
> constraint tolerance.
>
> <stopping criteria details>
>
> Active inequalities (to within options.TolCon = 1e-06):
> lower upper ineqlin ineqnonlin
> 1


Set the Display option to 'off' using OPTIMSET.

--
Steve Lord
slord@mathworks.com
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