Keeping the value of a constant once it reaches that value using IF else statement??

Hello,

I'm trying to generate the following function:

function K  = Table(Is,Imax,Phiref,Phi)
K=0;
Sa=0;
Sb=0;
Sc=0;
if Phi<0.98*Phiref
    if Is<Imax+0.5
        Sa=0;
        Sb=1;
        Sc=1;   
    else
        Sa=0;
        Sb=0;
        Sc=0;  
    end
else
    K=1;
end

Once that K=1, it must keep this value (1) during the rest of execution no matter the conditions in the function.

Thanks

[Juan Nunez]

Thanks Walter. It worked!!

Answer 1

[Walter Roberson]

function K  = Table(Is,Imax,Phiref,Phi)
  persistent stick
  if isempty(stick); stick = 0; end

Sa=0;
Sb=0;
Sc=0;
if Phi<0.98*Phiref
    if Is<Imax+0.5
        Sa=0;
        Sb=1;
        Sc=1;   
    else
        Sa=0;
        Sb=0;
        Sc=0;  
    end
else
    stick = 1;
end

   K = stick;

The only way to un-stick is to "clear Table", as you said it had to keep the value "no matter the conditions in the function", which tells us that no matter what inputs are given (such as if you wanted to start another loop) that Table needs to keep returning 1 if it has ever returned 1 at any point during the current MATLAB session.