Hi Alex, I think that the Itemize (,:) primitive is what you are looking for:
r=. i.4 $ r 4 $ ,: r 1 4 Also works in higher dimensions r=. i.2 3 4 $ r 2 3 4 $ ,: r 1 2 3 4 Cheers, bob On 2012-12-11, at 9:20 AM, Alex Giannakopoulos wrote: > v2m =. ] $~ 1,$ ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
