On 21/06/2012 07:24, Petr Savicky wrote:
On Thu, Jun 21, 2012 at 12:24:47AM +0200, Jessy wrote:
Hello,
May someone help me with how in R I can rank a vector from highest to
lowest. i.e rank 1 (smallest rank) is given to the highest value instead
of the usual way that it get's the highest rank.
Hello:
Try
x <- c(3, 2, 4, 1)
rank(-x)
[1] 2 3 1 4
Or more generally
rank(-xtfrm(x))
which works also for non-numeric x.
--
Brian D. Ripley, rip...@stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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