[R] spinning and flipping arrays

[Thomas Lumley]

On Mon, 26 May 2003, Bill Rising wrote:

> Hello people,
>
> Is there some simple way of spinning and/or flipping arrays in R?
> Here's what I mean.
>

I don't think there's a built-in solution.

I would try constructing the permutation of indices, probably using
aperm() to move the index of interest to first or last place, whichever is
easiest.

This sort of thing might well be worth coding at least partly in C.

	-thomas