Or: </.@:(|."1) i. 3 4
-- Raul On Tue, Jun 11, 2013 at 4:36 PM, Nollaig MacKenzie <[email protected]> wrote: > > A (possibly) interesting variant: > > rt=. |.&.:|: > > </. rt i. 3 4 > > > On 2013.06.11 08:22:09, > the extraordinary R.E. Boss spake thus: > >> As shown in <http://www.jsoftware.com/help/dictionary/d421.htm> >> http://www.jsoftware.com/help/dictionary/d421.htm (/.) works on >> the diagonals parallel to the minor diagonal, which run from top-right to >> bottom-left: >> >> >> >> </. i.3 4 >> >> +-+---+-----+-----+----+--+ >> >> |0|1 4|2 5 8|3 6 9|7 10|11| >> >> +-+---+-----+-----+----+--+ >> >> >> >> If you want to select the other diagonals, from top-left to bottom-right do >> >> >> >> <@|./.&.|. i. 3 4 >> >> +-+---+------+------+---+-+ >> >> |3|2 7|1 6 11|0 5 10|4 9|8| >> >> +-+---+------+------+---+-+ >> >> Another example of under (&.) http://www.jsoftware.com/jwiki/Essays/Under > > -- > Nollaig MacKenzie > http://www.yorku.ca/nollaig > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
