'a0 a1 a2 a3'=. i.4 3 $>,/a0;a1;a2;a3 4 3
On Tue, Jan 5, 2016 at 7:00 PM, bill lam <[email protected]> wrote: > for looping, try an accumulator, eg > a=. i.0 0 > > a=. a, a0 > a=. a, a1 > .... > On Jan 6, 2016 2:21 AM, "PackRat PackRat" <[email protected]> wrote: > > > I do a lot of manipulations with stock market data and such (i.e., > > tabular data), and I often have to "rip apart" a table and then > > reassemble the rows again. The ripping apart is easy, but I've always > > been challenged when putting it back together because the result never > > came out the way I wanted (or expected). After much experimenting and > > mucking around, I came up with this (as an example): > > > > z=. (((a0 ,: a1) , a2) , a3) , a4 NB. "glue" rows together > > > > However, there always seems to be a better way to do things in J. Can > > anyone enlighten me with an improved explicit manner (NOT tacit) of > > doing this? Thanks in advance! > > > > > > Harvey > > ---------------------------------------------------------------------- > > For information about J forums see http://www.jsoftware.com/forums.htm > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Devon McCormick, CFA Quantitative Consultant ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
