problem with starting a loop for matrices

if i have algorithm start with X0, and Y0 as agiven matrices

then i want to start a loop should I write

for k=1: 30

Z(k)=f(X0,Y0)

or should i start a loop from k=0 and write it as

Z(k)=f(X(0),Y(0))

i want to ubdate the X and Y at each iteration

Answer 1

[John D'Errico]

MATLAB does not allow an index origin of zero. This means that the FIRST element in a vector, for example, is indexed at number 1. The zero'th element does not exist in a matrix, at least not in MATLAB. So, for example, if I do this:

x = zeros(1,5);
for i = 1:5
    x(i) = i;
end
x

x = 1×5

1 2 3 4 5

x(1)

ans = 1

And as you can see, x(1) is that first element.