how to find linear approximation for Sbox (AES)

There are some specific analysis to evaluate The performance of the substitution box (Sbox) such as Linear approximation probability (LAP) just I want code by MATLAB to find LAP for SBOX -(that used in AES algorithm)

[KSSV]

What do you mean by this? Can you elaborate or given an example?

[John D'Errico]

There is no question in this, just your need for code. But also, you have not even explained what you mean. What is a linear approximation to a matrix? What does that mean (to you)? When does non linearity have to do with anything in this?

https://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer