[Jprogramming] reshaping a list to a table

['Pascal Jasmin' via Programming]

This is the main way to do it, but as a "self contained" adverb that uses reshape

 bycol =: 1 : '$~ (m |~ #) ,~ m <.@%~ #' NB. cuts off any incomplete rows


 3 bycol i.8

0 1 2

3 4 5









On Saturday, May 16, 2020, 10:57:38 a.m. EDT, 'Rob Hodgkinson' via Programming <programming at jsoftware.com> wrote: 





You could try Infix … here with NuVoc link…
https://code.jsoftware.com/wiki/Vocabulary/bslash#dyadic

  x u\ y where x is eg _2 means apply very b to successive pairs (_ for non-overlapping).

    _2 ]\ 1 2 3 4 5 6
1 2
3 4
5 6
    _2 ]\ 1 2 3 4 5 6 7
1 2
3 4
5 6
7 0

    _2 <\ 1 2 3 4 5 6
┌───┬───┬───┐
│1 2│3 4│5 6│
└───┴───┴───┘

HTH…/Rob

> On 17 May 2020, at 12:42 am, Raoul Schorer <raoul.schorer at gmail.com> wrote:
> 
> Hello,
> 
> I am convinced that this must be trivial, but I wasn't able to find in the documentation how to reshape a list to a table without manually extracting the length.
> 
> in summary, is there a more direct way of doing:
> 
> lst =. i. 6
> 
> ((2,~2%~#) $ ]) lst
> 
> for a list of arbitrary length?
> 
> Thanks!
> 
> Raoul
> 
> ----------------------------------------------------------------------
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