Sean O'Byrne wrote: > So what do you do if you have a 2-d matrix, 3-d matrix, 5-d matrix that > you want the mean of? In MATLAB, finding the mean of a 5-d matrix > involves typing mean(mean(mean(mean(a)))). Comparing this with mean^:5 > a (or better still mean^:_ a for the general case) is illuminating.
mean=:+/ % # d5=:?.(5#4)$0 mean^:_ d5 0.505807 mean,d5 0.505807 -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
