how to stop optimization when the function value reach 0?

I am using patternsearch algorithm to find minimum of a function (area of intersection of some objects). I know that the minimum cannot be less than 0, thus I want to stop when the function value is 0. How to do it?

[Geoff Hayes]

Filip - are you using an algorithm from a MATLAB toolbox or something that you have written? Please provide a reference to that code.

Answer 1

[Alan Weiss]

Use an output function and set stop = true when the function value gets close enough to 0.

Alan Weiss

MATLAB mathematical toolbox documentation

[Nachiketa Chauhan]

@alan

can you provide a more elaborate answer. what do you mean by set stop = true?