The -. dyad is documented both in nuvoc and in the dictionary. For example:
https://www.jsoftware.com/help/dictionary/d121.htm (The dyad definition is on the right hand side of the page). I hope this helps, -- Raul On Tue, Mar 30, 2021 at 12:53 AM Skip Cave <[email protected]> wrote: > > Wow! Thanks Cliff. I don't understand it all yet, but it does exactly what > I need. > The capability to remove specific elements in a vector is something I have > needed > fairly often: > > 0-.~2 0 3 1 5 0 0 1 > > 2 3 1 5 1 > > > 2 3-.~1 2 3 4 3 5 3 2 6 7 3 3 6 > > 1 4 5 6 7 6 > > > Where is this handy dyadic verb documented in the J doc? > > > Skip > > Skip Cave > Cave Consulting LLC > > > On Mon, Mar 29, 2021 at 3:41 PM Clifford Reiter <[email protected]> > wrote: > > > 0-.~#;._2 t,0 > > 2 3 1 5 1 > > > > > > > > > > On Mon, Mar 29, 2021 at 4:34 PM Skip Cave <[email protected]> wrote: > > > > > Given a vector t of ones and zeros" > > > > > > t=. 1 1 0 0 1 1 1 0 1 0 1 1 1 1 1 0 0 0 1 0 > > > > > > > > > How can I code a verb gp that will enumerate the sizes of each > > > zero-delimited group of ones in the vector t? > > > > > > For example: > > > > > > > > > gp t > > > > > > 2 3 1 5 1 > > > > > > > > > Skip Cave > > > Cave Consulting LLC > > > ---------------------------------------------------------------------- > > > 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
