[R] Best way to turn a list into a data.frame
Daniel Brewer
daniel.brewer at icr.ac.uk
Mon Apr 6 16:31:04 CEST 2009
Thanks thats marvellous. Does the trick beautifully.
Dan
hadley wickham wrote:
> 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
>
--
**************************************************************
Daniel Brewer, Ph.D.
Institute of Cancer Research
Molecular Carcinogenesis
Email: daniel.brewer at icr.ac.uk
**************************************************************
The Institute of Cancer Research: Royal Cancer Hospital, a charitable Company Limited by Guarantee, Registered in England under Company No. 534147 with its Registered Office at 123 Old Brompton Road, London SW7 3RP.
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