Re: [R] collapsing list to data.frame

From: Erik Iverson <iverson_at_biostat.wisc.edu>
Date: Wed, 05 Mar 2008 14:28:08 -0600

Perhaps

data.frame(do.call(rbind, l))

?

a9804814_at_unet.univie.ac.at wrote:
> Hello,
>
>
> Given a list with all elements having identical layout, e.g.:
>
>
> l = NULL
> l[[1]] = list(4, "hello")
> l[[2]] = list(7, "world")
> l[[3]] = list(9, " !!!! ")
>
>
> is there an easy way to collapse this list into a data.frame with each
> row being the elements of the list ?
> I.e. in this case I want to convert the list into a data.frame with 3
> rows and 2 columns, where column 1 holds the integer values, and column
> 2 the character values.
>
> I can get it done by looping over all elements and rbind them together
> to the final result, but that is quite slow (for large sets) and ugly,
> so I was wondering if there's an easy syntax.
>
> thanks a lot in advance,
> Thomas
>
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