how to trace matlab code? and how to backtrack?

I have matlab code of firefly algorithm and i want to trace so as to understand it. Pls can anyone help me?

Answer 1

[Walter Roberson]

You can put a breakpoint in the first executable line. After that you can use the Step and Step in buttons. You can see who called this routine using dbstack. You can switch attention between calling routines using dbup and dbdown

Answer 2

[adi kul]

not sure what you mean by "tracing". If you have the "code" then that should be sufficient to understand how it works. I would suggest putting "breakpoints' to see what happens till specified line it the code but that again depends on what code you have.