Den 2015-10-21 kl. 07:24, skrev Suharto Anggono Suharto Anggono via R-devel:
Marius Hofert-4------------------------------
Den 2015-10-09 kl. 12:14, skrev Martin Maechler:
I think so: the code above doesn't seem to do the right thing. Consider
the following example:
> x <- c(1, 1, 2, 3)
> rank2(x, ties.method = "last")
[1] 1 2 4 3
That doesn't look right to me -- I had expected
> rev(sort.list(x, decreasing = TRUE))
[1] 2 1 3 4
Indeed, well spotted, that seems to be correct.
Henric Winell
------------------------------
In the particular example (of length 4), what is really wanted is the following.
ind <- integer(4)
ind[sort.list(x, decreasing=TRUE)] <- 4:1
ind
You don't provide the output here, but 'ind' is, of course,
> ind
[1] 2 1 3 4
The following gives the desired result:
sort.list(rev(sort.list(x, decreasing=TRUE)))
And, again, no output, but
> sort.list(rev(sort.list(x, decreasing=TRUE)))
[1] 2 1 3 4
Why is it necessary to use 'sort.list' on the result from
'rev(sort.list(...'?
Henric Winell
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