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

[Gabor Grothendieck]

Its not part of state.x77.  Its a completely separate variable.
Try ls("package:datasets") and notice its in the list
or try ?state.region and note that its a variable in datasets.


On 8/21/06, John Kane <jrkrideau at yahoo.ca> 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?
>
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