That’s the one I always use, too, Mike Please reply to [email protected]. Sent from my iPad
> On 30 Nov 2018, at 19:31, Raul Miller <[email protected]> wrote: > > 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 ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
