[R] Adding List Elements To A Data Frame

[Pete Brecknock]

Thanks Brian.  Perfect.


Brian Diggs wrote
> On 7/19/2013 12:54 PM, Pete Brecknock wrote:
>> Hi
>>
>> I am trying to add the contents of the list "myList" to a new column "z"
>> in
>> the data frame "myDataframe"
>>
>> myList <- list(c("A1","B1"), c("A2","B2","C2"), c("A3","B3"))
>>
>> myDataframe <- data.frame(x=c(1,2,3), y=c("R","S","T"))
>>
>> Would like to produce
>>
>> x  y  z
>> 1  R  A1,B1
>> 2  S  A2,B2,C2
>> 3  T  A3,B3
> 
> myDataframe$z <- sapply(myList, paste0, collapse=",")
> 
>> where z is a character string holding the contents of the different
>> elements
>> of the list.
>>
>> Any thoughts greatly appreciated.
>>
>> Pete
> 
> -- 
> Brian S. Diggs, PhD
> Senior Research Associate, Department of Surgery
> Oregon Health & Science University
> 
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