No default options available: the function 'fmincon' does not exist on the path.

I am running demo showing below, with error : No default options available: the function 'fmincon' does not exist on the path. what's wrong with my matlab?

load Data_MarkPound

dem2gbp = price2ret(Data);

[coeff,errors,LLF,innovations,sigmas] = garchfit(dem2gbp);

Answer 1

[Walter Roberson]

fmincon is part of the Global Optimization Toolbox.

Answer 2

[Martyn Dorey]

I've just had this error in compiled code. It is not being picked because the optimset command uses a text reference to fmincon. optimset('fmincon'). To get around this error add the following line of text to your code which uses a pragma: %#function fmincon