How to save a variable in optimization fitness or constrain function ?

Hi I am curious about how to store the 'obj' variable (I mean fitness value) and 'con' variable (I mean constrain value) to workspace during running algorithm??? I need to save them in each iteration ? For instance, I am interested in building a matrix which is filled with the variable by the rows in optimization problem. The variable is available in fitness function and constrain function in my code...

Thanks a lot.

Answer 1

[Alan Weiss]

You can use an output function. The example I linked shows how to do exactly what you want.

Alan Weiss

MATLAB mathematical toolbox documentation