A very simple while loop

while tol<10E-6
E= M+e*sin(E)
n=n+1;

E = M + (M+e*sin(E))

   tol(:,1)=  E(n+1)-E(n)    
  end

If I don't assign an index to the E value in this loop how can I reference two values in the sequence. Everything works, but I just need clarification on the index values for the tol variable.

Answer 1

[Walter Roberson]

while tol<10E-6

means the same thing as

while all(tol(:)<10E-6)

When you make tol a vector then all of the entries have to be true in order to proceed.

If you do not need a record of the tol values, then just assign tol = E(n+1)-E(n) ;

If you do need a record of the tol values, then use while tol(end)<10E-6

... Or probably, while abs(tol(end))>10E-6 since you probably want to stop when the you get close enough.

[Truman Cassady]

I posted an updated screen capture of my code. Thank you for responding to me on a Saturday btw. I can't correctly build a new tolerance value with each successive iteration.