[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.

This e-mail message is confidential and for use by the a...{{dropped:2}}




More information about the R-help mailing list