What is it referring to about initialized, though? The @vals array is all there (all initialized). THe @sums array is initialized all to zero in the beginning. I thought maybe it meant the $i, $_, $j indices, but they too all have values.

(Also, I'm getting incorrect results; this may be a result of another part of the code, though)

Update: Shoot... didn't hit stop in time. If someone sees this with the right 'power', can they delete the above node (it was "truly a duplicate" with some info left out...)