f=. 13 : 0
('';,.x),.(y);x +/ y
)
f
('' ; [: ,. [) ,. ] ; +/
2011/11/20 Kip Murray <[email protected]>
> Now make this into a tacit verb table so that a table b gives you the
> table.
>
> On 11/20/2011 7:09 AM, Björn Helgason wrote:
> > or
> >
> > ('';,.a),.(b);a +/ b
> >
> > 2011/11/20 Björn Helgason<[email protected]>
> >
> >>
> >> Ok it is simple j we are after
> >> We start by defining a and b
> >>
> >> a=: 2 3 5
> >> b=: 0 1 2 3
> >>
> >> Then we create the elements we want
> >>
> >> '';b;a;a +/ b
> >> ┌┬───────┬─────┬───────┐
> >> ││0 1 2 3│2 3 5│2 3 4 5│
> >> ││ │ │3 4 5 6│
> >> ││ │ │5 6 7 8│
> >> └┴───────┴─────┴───────┘
> >>
> >> Now we rearrange a so it goes down in a column
> >>
> >> '';b;(,.a);a +/ b
> >> ┌┬───────┬─┬───────┐
> >> ││0 1 2 3│2│2 3 4 5│
> >> ││ │3│3 4 5 6│
> >> ││ │5│5 6 7 8│
> >> └┴───────┴─┴───────┘
> >>
> >> Next we arrange it in a 2 by 2
> >>
> >> ('';b),.(,.a);a +/ b
> >> ┌───────┬───────┐
> >> │ │2 │
> >> │ │3 │
> >> │ │5 │
> >> ├───────┼───────┤
> >> │0 1 2 3│2 3 4 5│
> >> │ │3 4 5 6│
> >> │ │5 6 7 8│
> >> └───────┴───────┘
> >>
> >> ooppss wrong wa around we fix it with transpose
> >>
> >>
> >> |:('';b),.(,.a);a +/ b
> >> ┌─┬───────┐
> >> │ │0 1 2 3│
> >> ├─┼───────┤
> >> │2│2 3 4 5│
> >> │3│3 4 5 6│
> >> │5│5 6 7 8│
> >> └─┴───────┘
> >>
> >>
> >
> >
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
>
--
Björn Helgason, Verkfræðingur
Fornustekkum II
781 Hornafirði,
t-póst: [email protected]
gsm: +3546985532
twitter: @flugfiskur
http://groups.google.com/group/J-Programming
Tæknikunnátta höndlar hið flókna, sköpunargáfa er meistari einfaldleikans
góður kennari getur stigið á tær án þess að glansinn fari af skónum
/|_ .-----------------------------------.
,' .\ / | Með léttri lund verður |
,--' _,' | Dagurinn í dag |
/ / | Enn betri en gærdagurinn |
( -. | `-----------------------------------'
| ) | (\_ _/)
(`-. '--.) (='.'=) ♖♘♗♕♔♙
`. )----' (")_(") ☃☠
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
