[R] Constructing a list using a function...

[Rui Barradas]

Hello,

Try

myfun2 <- function(DF, FUN){
	x <- lapply(as.data.frame(t(DF[-1])), function(x) FUN(x[1], x[2]))
	names(x) <- levels(DF[[1]])[ DF[[1]] ]
	x
}

myfun2(myframe, myfun)

Hope this helps,

Rui Barradas

Em 02-07-2012 07:02, Onur Uncu escreveu:
> Hi All
>
> I have a dataframe:
>
> myframe<-data.frame(ID=c("first","second"),x=c(1,2),y=c(3,4))
>
> And I have a function myfun:
>
> myfun<-function(x,y) x+y
>
> I would like to write a function myfun2 that takes myframe and myfun
> as parameters and returns a list as below:
>
> mylist
> $first
> [1] 4
>
> $second
> [2] 6
>
> Could you please help me with this? Doesn't seem like the "apply"
> family of functions were intended for this case.
>
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>