On Sun, Dec 12, 2010 at 5:01 PM, Steven Taylor <[email protected]> wrote: > I really like your approach with the dyadic use of &., and the sneaky > subtract and then re-add (very neat), but unfortunately _. doesn't work.
Of course not: that trick only works for numeric arrays, and _. is not a number. You should avoid using _. in any data that you will be processing. It is, by definition, and inconsistent piece of data, and any computations involving it can produce inconsistent results. -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
