Maybe something like this? v=: (i.10)&e."_ 0
v 1 2 3 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 v 0 1 2 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 On Mon, Oct 29, 2018 at 1:57 PM, Lorenz Köhl <[email protected]> wrote: > Hi, > > I need a verb to turn a list of numbers between zero and nine > into a table where each item is 10$0 except at the place indexed > by the input numbers, for example: > > v 0 1 2 > > 1 0 0 0 0 0 0 0 0 0 > > 0 1 0 0 0 0 0 0 0 0 > > 0 0 1 0 0 0 0 0 0 0 > > My approach using ammend leaves me puzzled: > > > v=:1&(]})&(10$0) > > v 1 2 3 > > 1 0 0 0 0 0 0 0 0 0 > > 1 1 0 0 0 0 0 0 0 0 > > 1 1 0 0 0 0 0 0 0 0 > > > Here I have to bind two nouns (1 as x and 10$0 as y) to the verb > > (]}) but maybe that doesn't do what I think it does? The rank of v > > doesn't seem to matter, it gives the same output, but I know I want > > it to use 0-cells of the input list. > > > I'd be happy to see what the idiomatic way to do this is, and maybe > > how to fix my approach. > > > greetings, > > Lorenz > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm -- *Kenneth Lettow* Director Market Intelligence | Thomas™ Thomasnet.com <https://www.thomasnet.com> | #ThomasForIndustry <https://www.thomasnet.com> <https://www.thomasnet.com>[image: Thomas For Industry] <https://www.thomasnet.com> ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
