Pete,

I'm not quite clear on your answer. Especially what is y and what is its
shape for edges?

Thanks,

On Mon, Dec 10, 2018 at 6:16 PM Pete <[email protected]> wrote:

> Maybe I oversimplified, but I found the nodes with infinite area by
> appending the top, right, bottom, and left edges of the tightly bounded
> grid, and nubbing the result:
>
> rot =. [: |. |:
>
> edges =. 3 : 0
>   top =. 0 { y
>   right =. 0 { rot^:1 y
>   bottom =. 0 { rot^:2 y
>   left =. 0 { rot^:3 y
>   ~. top , right , bottom , left
> )
>
> My intuition was that, because of how Manhattan distance works, every node
> that extends to the edge of my tightly bound rectangle will have at least
> one infinite line of closest points either to the North, East, South, or
> West of it.
>
> It worked for my input, but it's a very hand-wavy solution.
>
>
>
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