[R] set difference between two data frames
Rui Barradas
ruipbarradas at sapo.pt
Thu Oct 31 21:25:00 CET 2013
Hello,
Try the following. (I don't remember who wrote this function but I saw
it in R-Help)
setdiffDF <- function(A, B){
f <- function(A, B)
A[!duplicated(rbind(B, A))[nrow(B) + 1:nrow(A)], ]
df1 <- f(A, B)
df2 <- f(B, A)
rbind(df1, df2)
}
df1 <- data.frame(A = 1:10, B = 11:20)
df2 <- data.frame(A = 1:5, B = 11:15)
setdiffDF(df1, df2)
Hope this helps,
Rui Barradas
Em 31-10-2013 19:58, Yasin Gocgun escreveu:
> Hi,
>
> I have two data frames, say, x and y, where y is a subset of x. How
> can I find the set difference of these two data frames (i.e., x-y)?
>
> Thanks,
>
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