[R] List to data frame

[Johannes Graumann]

Thanks a lot!

This solves my problem!

Joh

On Monday 26 July 2010 17:06:37 Joshua Wiley wrote:
> Hi,
> 
> Here is another option if you already have a list you want to convert.
>  This will handle different elements of the list being different
> lengths.
> 
> #Using your example data
> mydata <- list(c(1,2,3),c(4,5,6))
> 
> data.frame(
>  OriginalListIndex = rep(x = seq_along(mydata),
>    times = unlist(lapply(mydata, length))),
>  Item = unlist(mydata)
> )
> 
> #Just to demonstrate that this method works generally
> mydata <- list(c(1,2,3), c(7,6), c(3,4,5,6,7,8,9))
> 
> data.frame(
>  OriginalListIndex = rep(x = seq_along(mydata),
>    times = unlist(lapply(mydata, length))),
>  Item = unlist(mydata)
> )
> 
> 
> HTH,
> 
> Josh
> 
> On Mon, Jul 26, 2010 at 7:46 AM, Johannes Graumann
> 
> <johannes_graumann at web.de> wrote:
> > Hi,
> > 
> > Any ideas on how to efficiently convert
> > 
> >> list(c(1,2,3),c(4,5,6))
> > 
> > to
> > 
> >> data.frame(OriginalListIndex=c(1,1,1,2,2,2),Item=c(1,2,3,4,5,6))
> > 
> > Thanks for any hints,
> > 
> > Joh
> > 
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