On 5/18/05, Anthony Heading <[EMAIL PROTECTED]> wrote:
> Is there a way to target hyperoperators at different axes of a
> multi-dimensional array? This is an attractive feature of
> various APL-like languages, viz. e.g. in J:
>
> a =. 2 5 $ i. 7 - a simple 2-by-5 array
> a
> 0 1 2 3 4 - like this
> 5 6 0 1 2
>
>
> +/"1 a - sum reduce over axis 1
> 10 14
[+]<< @a
> +/"2 a - sum reduce over axis 2
> 5 7 2 4 6
Can't think of any for this one. Or maybe it's this one that I can
think of it for, and the other one which I can't.
I think we're beginning to re-invent PDL. Poorly.
Luke
