On Mon, 21 Aug 2006, John Kane wrote:
> I was looking ?aggregate and ran the first example
>
> aggregate(state.x77, list(Region = state.region),
> mean)
>
> The variables in state.x77 appear to be :
> > state.x77
> Population Income Illiteracy Life Exp Murder HS Grad
> Frost Area
>
> Where is the "state.region" variable coming from?
> find("state.region")
[1] "package:datasets"
Try ?state.region for more info.
--
Brian D. Ripley, [EMAIL PROTECTED]
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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