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
