simple question in matlab

Hello all,

I have the following for loop: for n = 3:32 r(n) = rank(magic(n)); end r

Shouldn't this loop start from n=3 and the size of r be 1x30? but why size of r is 1x30 and it puts r(1)=r(2)=0? how can I make the loop start from 3 not 1?

Answer 1

[Laura Proctor]

You need to start your index value in r with 1 or else it populates up to the index value specified with zeros.

r = zeros(1,30);
for n = 3:32 
    r(n-2) = rank(magic(n)); 
end
r