Yep, just what I was looking for. With this approach one can select the length of the substrings of interest.
2 4 6 <@<\ 'abcdefg' ┌────────┬────────┬──────┬──────┬────┬────┐ │┌──┐ │┌──┐ │┌──┐ │┌──┐ │┌──┐│┌──┐│ ││ab│ ││bc│ ││cd│ ││de│ ││ef│││fg││ │└──┘ │└──┘ │└──┘ │└──┘ │└──┘│└──┘│ ├────────┼────────┼──────┼──────┼────┼────┤ │┌────┐ │┌────┐ │┌────┐│┌────┐│ │ │ ││abcd│ ││bcde│ ││cdef│││defg││ │ │ │└────┘ │└────┘ │└────┘│└────┘│ │ │ ├────────┼────────┼──────┼──────┼────┼────┤ │┌──────┐│┌──────┐│ │ │ │ │ ││abcdef│││bcdefg││ │ │ │ │ │└──────┘│└──────┘│ │ │ │ │ └────────┴────────┴──────┴──────┴────┴────┘ ;2 4 6 <@<\ 'abcdefg' ┌──┬──┬──┬──┬──┬──┬────┬────┬────┬────┬──────┬──────┐ │ab│bc│cd│de│ef│fg│abcd│bcde│cdef│defg│abcdef│bcdefg│ └──┴──┴──┴──┴──┴──┴────┴────┴────┴────┴──────┴──────┘ On Thu, Oct 24, 2019 at 1:39 PM Ric Sherlock <tikk...@gmail.com> wrote: > You could add another level of boxing and then a raze to get rid of the > fills > ; (>:i.5) <@(<\) 'abcde > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm