From hadley at rice.edu  Thu Feb  4 00:10:27 2010
From: hadley at rice.edu (Hadley Wickham)
Date: Wed, 3 Feb 2010 17:10:27 -0600
Subject: [Rd] Proposal unary - operator for factors
Message-ID: <f8e6ff051002031510m4dca3c8co8d69c3117e1deab4@mail.gmail.com>

Hi all,

Why not make the unary minus operator return the factor with levels
reversed?  This would make it much easier to sort factors in
descending order in part of an order statement.

Hadley

-- 
http://had.co.nz/



[Rd] Proposal unary - operator for factors
Hadley Wickham