Question

I am using Octave on Linux to do some basic Matlab computations and I am getting the error mentioned in the title for the following piece of code:

for a = i:n
 aux = U(j,a)/U(a,a);
 % L(a,i) = aux;
end

I would like to mention that U is an n by n matrix and i is the index from another outer loop.

Thanks,
Daniel.

Answer 1

Using i and j as indices in Matlab is not a good practice, since by default they represent sqrt(-1). It would seem like either i or j are not initialized in your code, hence taking their default complex value.