fmtmat=:3 :0
r=. 0 0$t=. 9!:6''
try.
9!:7 ' '"0 t
r=. ": y
catch. end.
9!:7 t
d=. 1#~#$r
d }. (-d) }. r
)fmtmat ts2 -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
