[R] Rank - Descending order

[Prof Brian Ripley]

rank((-x$a))

rank() does not work on lists but on numeric vectors, and the above works 
generally for numeric vectors.

On Tue, 20 Apr 2004, Manoj - Hachibushu Capital wrote:

> Dear All,
> 	Is there any simple way to way to produce "rank", for a given
> list, but in a descending order?
> 
> 	E.G: 	
> 		x	= list(a=c(1,5,2,4));
> 		rank(x$a);	produces 1,4,2,3 
> 
> 	However I am looking for a way to generate (4,1,3,2). 
> 
> 	It would be particularly nice if the proposed solution has all
> the niceties of rank function (like NA handling and ties.method
> functionality) 

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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