[R] "Inverting" a list

[Gabor Grothendieck]

This isn't a single command but its pretty short:

unstack(stack(L)[2:1])

On Feb 6, 2008 5:51 PM, hadley wickham <h.wickham at gmail.com> wrote:
> Is there a built in function to invert a list?  i.e. to go from
>
> list(
>  a = c("1", "2", "3"),
>  b = c("1"),
>  d = c("2", "4")
> )
>
> to
>
> list(
>  "1" = c("a", "b"),
>  "2" = c("a", "d"),
>  "3" = "a",
>  "4" = "2"
> )
>
> Hadley
>
> --
> http://had.co.nz/
>
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