[R] aggregate example : where is the state.region variable?

[Prof Brian Ripley]

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,                  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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