Hello all,
I think I am missing something about the sorting parameter in the "match"
command/
Here is an example:
a1 <- data.frame(name = c("D", "B", "C", "A", "A", "C"))
a2 <- data.frame(name = c("A", "B", "C", "D"), num = 1:4)
a1
a2
merge(a1, a2, sort = F, by.x = T)
The result is:
name num
1 D 4
2 B 2
3 C 3
4 C 3
5 A 1
6 A 1
While I wish my rows to be in the same order as in a1, they are having some
other order.
What am I missing here?
Thanks.
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