Do you mean the following? It's shorter, but likely no more efficient. (i. <./)"1&.:|: a
On Fri, Aug 26, 2011 at 10:32 PM, David Ward Lambert <b49p23t...@stny.rr.com> wrote: > Is there a shorter sentence? [: |: [: (i. >./)"1 |: > > I'm thinking this could work: i."SOME RANK >./ > > ]a=: (?.@$ */)2 3 6 NB. data, rank 3 > 18 20 28 30 29 28 > 22 28 8 7 21 32 > 31 17 25 32 33 28 > > 13 17 29 15 1 25 > 18 28 33 26 22 9 > 17 6 34 15 23 35 > > >./a NB. want the index of a plane having these maximums > 18 20 29 30 29 28 > 22 28 33 26 22 32 > 31 17 34 32 33 35 > > NB. this works but involves two transposes > |: (i. >./)"1 |: a > 0 0 1 0 0 0 > 0 0 1 1 1 0 > 0 0 1 0 0 1 > > NB. this version is ridiculous > <./ (<:@+ >:@# * 0 = ]) (>:@i.@# * (="2 >./)) a > 0 0 1 0 0 0 > 0 0 1 1 1 0 > 0 0 1 0 0 1 > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- (B=) <-----my sig Brian Schott ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
