I have:
d <- sample(10:100, 9) o <- order(d) r <- d[o]
How I can get d (in the original order), knowing only r and o?
r[order(o)]?
> d=sample(10:100,9) > o=order(d) > r=d[o] > all(r[order(o)] == d) [1] TRUE
tested and works for duplicates in d as well.
Barry
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