Or, slightly longer: ($a)#:I.,a or ($#:I.@,)a ...
Thanks, -- Raul On Fri, Nov 30, 2018 at 2:04 PM Don Guinn <[email protected]> wrote: > > Or do > > 4 $.$.a > > On Fri, Nov 30, 2018, 11:56 AM Roger Hui <[email protected] wrote: > > > a #&, {i.&.>$a > > ┌───┬───┬───┬───┬───┐ > > │0 0│2 3│4 6│6 9│9 2│ > > └───┴───┴───┴───┴───┘ > > > a #&, {i.&.>$a > > 0 0 > > 2 3 > > 4 6 > > 6 9 > > 9 2 > > > > > > > > On Fri, Nov 30, 2018 at 10:52 AM Skip Cave <[email protected]> > > wrote: > > > > > Given the array a: > > > > > > ]a=.10 10$0=23|i.100 > > > > > > 1 0 0 0 0 0 0 0 0 0 > > > > > > 0 0 0 0 0 0 0 0 0 0 > > > > > > 0 0 0 1 0 0 0 0 0 0 > > > > > > 0 0 0 0 0 0 0 0 0 0 > > > > > > 0 0 0 0 0 0 1 0 0 0 > > > > > > 0 0 0 0 0 0 0 0 0 0 > > > > > > 0 0 0 0 0 0 0 0 0 1 > > > > > > 0 0 0 0 0 0 0 0 0 0 > > > > > > 0 0 0 0 0 0 0 0 0 0 > > > > > > 0 0 1 0 0 0 0 0 0 0 > > > > > > > > > How can I write a function 'ac' that will list the coordinates of each 1 > > in > > > the array? > > > > > > Example using array a: > > > > > > ac a > > > > > > 0 0 > > > > > > 2 3 > > > > > > 4 6 > > > > > > 6 9 > > > > > > 9 3 > > > > > > Extend to 3 or more dimensions? > > > > > > Skip Cave > > > ---------------------------------------------------------------------- > > > For information about J forums see http://www.jsoftware.com/forums.htm > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
