Message-ID: <Pine.LNX.4.61.0508162002020.4224@gannet.stats>
Date: 2005-08-16T19:05:25Z
From: Brian Ripley
Subject: Dots in models formulae
In-Reply-To: <1124214596.8689.113.camel@gsimpson.geog.ucl.ac.uk>
On Tue, 16 Aug 2005, Gavin Simpson wrote:
> I still can't find this documented for a formula (I found
> update.formula, but the meaning of "." is different there, slightly, as
> you indicate) - but it must be as I didn't imagine seeing it - or maybe
> I did...
It _is_ in `An Introduction to R', both for lm() and update.formula().
Since this meaning does depend on using terms.formula(), it is on that
functions' help page.
--
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)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595