That's not the "problem", that's the solution. They are the missing indices.
R.E. Boss -----Original Message----- From: Programming <[email protected]> On Behalf Of Roger Hui Sent: zaterdag 14 november 2020 04:55 To: [email protected] Subject: Re: [Jprogramming] Getting indices of matrix elements Another candidate is >,{i.&.>$x . (4 $. $.) has the "problem" that indices corresponding to 0 elements are excluded. On Fri, Nov 13, 2020 at 6:59 PM Henry Rich <[email protected]> wrote: > Ric Sherlock has suggested that (4 $. $.) would be an idiom worthy of > special code. I agree & will do it sometime. > > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
