[R] Best way to turn a list into a data.frame

hadley wickham h.wickham at gmail.com
Mon Apr 6 16:11:59 CEST 2009


On Mon, Apr 6, 2009 at 8:49 AM, Daniel Brewer <daniel.brewer at icr.ac.uk> wrote:
> Hello,
>
> What is the best way to turn a list into a data.frame?
>
> I have a list with something like:
> $`3845`
>  [1] "04010" "04012" "04360"
>
> $`1029`
> [1] "04110" "04115"
>
> And I would like to get a data frame like the following:
>
> 3845 "04010"
> 3845 "04012"
> 3845 "04360"
> 1029 "04110"
> 1029 "04115"
>
> Any ideas?

l <- list("3845" = c("a", "b", "c"), "1029" = c("d", "e","f"))

libary(reshape)
melt(l)

Hadley

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