matlab function initiaizing the parameter

I'm using embedded matlab function for my project. How to initialize the parameter just once at the beginning? some sort like this: kp = 0 (initialize once only) (the value of kp is updated after every loop running)....for more details i am using embeded matlab function to control the water flow rate in LAB flow rig control system ,,,Is that possible way of controlling ???

Answer 1

[Kaustubha Govind]

You can create kp as a persistent variable. For example:

function myTest()

persistent kp;

if isempty(kp)
   kp = 0; % only initialized the first time
end

kp = kp + 1;

end