Optimization Toolbox - Use of 'interior-point'

I have the following code:

options = optimoptions(@fmincon,'Algorithm','interior-point');
f = @(x)CA_OptP(x,DistancesKM, StudentsByTown, A_Students);
[x, fval, output] = fmincon(f,x0,[],[],[],[],0,10, nonlcon, options);
[P_Students, Weights] = CA1(x,param1, param 2)

I get this error message: Undefined function 'optimoptions' for input arguments of type 'function_handle'.

What did I do wrong with specifying options?

[Matt J]

You should learn to format your code using the "{} Code" formatting icon, as I have now done for you.

Answer 1

[Matt J]

Are you sure you don't mean

 options = optimset('Algorithm','interior-point');

Otherwise, where did you encounter the "optimoptions" command?

Answer 2

[Sean de Wolski]

Hi Christoph and Matt J,

optimoptions is a new class in R2013a meant to be used in place of optimset. If you are not using R2013a it will not be available.

http://www.mathworks.com/help/releases/R2013a/optim/ug/optimoptions.html

If you are using R2013a and getting that error message, there are a few possible causes:

• You do not have a license for the Optimization Toolbox. You could test this by running the following and see if it is followed by "Has no license availabe"

which -all optimoptions

• The path is corrupted. Run the following:

restoredefaultpath; rehash toolboxcache;savepath

Answer 3

[Christoph]

Thx guys for your answers. I'm indeed using 2012 and unfortunately look up the 2013 tutorial. With optimset it worked! thx for the fast feedback