On Thu, May 31, 2012 at 10:48 AM, Graham Parkhouse <graham.parkho...@ntlworld.com> wrote: > e=: 2 7 1 8 2 8 1 8 3 > pi=: 3 1 4 1 5 9 2 6 5 > isecn=: ([: /:~ [: ~. e. # [)"1 NB. Intersection of the two sets ... > isecn/"1 e,.pi > > > > > > > > > This last sentence give me 9 blank lines. I expected and wanted 1 2 3. Is my > view of rank and frames too simplistic?
e,.pi gives you 9 lines isecsn/"1 gives you the result of isecsn on each of those lines. Your isecn/ e,:pi already gives you the result you want. -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
