Not entirely sure what you want, but is this it?
3 4{."1&.><arr
+-----+-------+
|0 1 2|0 1 2 3|
|6 7 8|6 7 8 9|
|2 3 4|2 3 4 5|
|8 9 0|8 9 0 1|
|4 5 6|4 5 6 7|
|0 1 2|0 1 2 3|
|6 7 8|6 7 8 9|
|2 3 4|2 3 4 5|
|8 9 0|8 9 0 1|
|4 5 6|4 5 6 7|
+-----+-------+
On Fri, Sep 26, 2014 at 12:44 PM, Jon Hough <[email protected]> wrote:
> I have a 2-d array. e.g.
> arr =: 10 6 $ i. 10
> I want to get the first 3 columns from the array, e.g. 3{."1and get the
> first 4 elements, e.g. 4{."1
> However, combining these, as in
> 3 4 {."(0 1) arrgives a length error. Of course 3{. and 4{. will give
> different shape results so should be boxed and then concatenated
> perhaps(?). I am not sure how to do this, but the end result I want would
> be something like:
>
> ┌─────┐
>
> │0 1 2│
>
> │6 7 8│
>
> │2 3 4│
>
> │8 9 0│
>
> │4 5 6│
>
> │0 1 2│
>
> │6 7 8│
>
> │2 3 4│
>
> │8 9 0│
>
> │4 5 6│
>
> └─────┘
>
>
> concatenated with
>
>
> ┌───────┐│0 1 2 3││6 7 8 9││2 3 4 5││8 9 0 1││4 5 6 7││0 1 2 3││6 7 8 9││2
> 3 4 5││8 9 0 1││4 5 6 7│
>
>
>
>
>
>
>
>
>
>
>
>
> └───────┘
>
>
>
> ----------------------------------------------------------------------
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--
Devon McCormick, CFA
----------------------------------------------------------------------
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