Re: [Rd] bug in rank(), order(), is.unsorted() on character vector

From: Barry Rowlingson <>
Date: Wed, 07 Dec 2011 10:17:24 +0000

2011/12/7 Hervé Pagès <>:
> rank(xa)

See help(Comparison), specifically:

"Beware of making _any_ assumptions about the

     collation order" followed by "Collation of
     non-letters (spaces, punctuation signs, hyphens, fractions and so
     on) is even more problematic."

Barry mailing list Received on Wed 07 Dec 2011 - 10:19:33 GMT

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