Hello people.
I wish to reorder a simple vector of numbers by another vector of the order
(and then do the same, but with a data frame rows)
I try this (which doesn't work) :
> aa <- c(3, 1 ,2 )
> aa[aa]
[1] 2 3 1
The same won't work if I try to order a data frame:
> data.frame(matrix(c(3,1,2), 3,2))[c(3,1,2),]
X1 X2
3 2 2
1 3 3
2 1 1
How should I do this?
p.s: sorry if the question is too simple, but I couldn't find a good
explanation for this on google.
p.p.s: I am running R 2.8
Thanks,
Tal
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