Still not quite sure what you mean, but how about:
]n =: i.2 3 4
0 1 2 3
4 5 6 7
8 9 10 11
12 13 14 15
16 17 18 19
20 21 22 23
1{0 T n NB. -: 1{n
12 13 14 15
16 17 18 19
20 21 22 23
1{1 T n
4 5 6 7
16 17 18 19
1{2 T n
1 5 9
13 17 21
If that's the one, then T would be:
T =: {{ (0 1 2-.x) |: y }}
(sorry, not tacit)
Ben
On Thu, 7 Sept 2023 at 09:58, Piet de Jong <[email protected]> wrote:
> This works!
> Except the ordering of the axes is slightly unusual to my way of thinking.
> For example suppose m=.i.3 3 3 is the “cube" be sliced and v is your verb.
> Then the items of (0 v m) has successive items “going back” into the cube.
> The items (1 v m) are the horizontal slices.
> The items of (2 v m) are the vertical slices.
>
> The order of the last two appear "unnatural". (To my way of thinking at
> least)
> This seems to beg the question what is the natural order when slicing.
>
> > On 7 Sep 2023, at 08:32, Henry Rich <[email protected]> wrote:
> >
> > Since you want all the slices, what you are looking for is a transpose.
> >
> > Maybe
> >
> > ~.@(, i.@#) |: ]
> >
> > Untested.
> >
> > Henry Rich
> >
> > On Wed, Sep 6, 2023, 6:10 PM Piet de Jong <[email protected]> wrote:
> >
> >> Here is my “wish"
> >>
> >> A dyadic (tacit) verb such that x v y gives all the slices of y along
> >> dimension x, where x is integer. That is to say
> >>
> >> i{ x v y
> >>
> >> is slice i of the array y along dimension x.
> >>
> >> Thanks for all your help!
> >>
> >>> On 7 Sep 2023, at 08:04, 'robert therriault' via Programming <
> >> [email protected]> wrote:
> >>>
> >>> Or something like this?
> >>>
> >>> [n =. i. 2 2 2
> >>> 0 1
> >>> 2 3
> >>>
> >>> 4 5
> >>> 6 7
> >>> ,./ n
> >>> 0 1 4 5
> >>> 2 3 6 7
> >>> ($ $ (,@,./)) n
> >>> 0 1
> >>> 4 5
> >>>
> >>> 2 3
> >>> 6 7
> >>>
> >>> Cheers, bob
> >>>
> >>>
> >>>> On Sep 6, 2023, at 14:49, 'robert therriault' via Programming <
> >> [email protected]> wrote:
> >>>>
> >>>> Hi Piet,
> >>>>
> >>>> Maybe show us what you would want to do with higher dimensions? Or a
> >> less symmetric 2 dimensional shape?
> >>>>
> >>>> For shape 2 2, I would use the even simpler
> >>>>
> >>>> |: m
> >>>> 0 2
> >>>> 1 3
> >>>>
> >>>> Hope this helps.
> >>>>
> >>>> Cheers, bob
> >>>>
> >>>>> On Sep 6, 2023, at 14:26, Brian Schott <[email protected]>
> wrote:
> >>>>>
> >>>>> ,./0 1 {"1 m
> >>>>
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