Thanks in advice for your time,
Sorry for this simple question I am searching a function or a method to
obtain the list of the ID. I tryed sever combination like manual or in R
wiki
mfDF <- data.frame(
ID =c(1,1,1,1,2,2,2,2,2,3,3,3,3,3,3,3,3),
value =c(2,12,25,50,100,200,6,12,50,25,50,50,6,8,90,5,8))
like this
>
1 2 3
Thanks and sorry
Gianni
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