Problem with Array initialization each time (Matlab embedded function)

Hello, I'm quite new to matlab, and try to code in c-style. My problem is, I have a embedded matlab function, which reads the error values and the index from input and update in the array. This looks like so..

    function u1 = EvaluatePattern(HopSeq,Dis,Erri,ErrV,En)

    ErrpatternArray= [1,1,1,1,1,1,1,1,1,1,1];
    ErrpatternArray(Erri) =ErrV;

the Erri and ErrV will be the random values and will be updated each time this embedded block run. I just tried debugging, and found that each time "ErrpatternArray" is initiated and the whatever the update i had made in the previous is not stored. I just want to declara and initiate this array only at the very begining and keep updating the values. I couldn't find any solution. Can anybody please help me out.!!! - regards Aravind

Answer 1

[Robert Cumming]

you can either

1. Make your variable persistent

function u1 = .....
  persistent ErrpatternArray
  if isempty ( ErrpatternArray ); 
    ErrpatternArray = Intialvalues; 
  end
  ....your code

2. Initialise it in the calling function

   ErrpatternArray = Initialvalues;

[Aravind]

Wow, Robert, that was so instant reply from you, and the first one works.!! Thanks a ton Pal.