[R] Documenting related data sets

[Michael Friendly]

Say I want to include the data from Minard's march on Moscow graphic in 
a package.  They consist of
three data frames, Minard.troops, Minard.cities, Minard.temp.

I've determined that I can document them all in one .Rd file, Minard.Rd, 
that starts:

\name{Minard}
\Rdversion{1.1}
\alias{Minard}
\alias{Minard.cities}
\alias{Minard.troops}
\alias{Minard.temp}
\docType{data}
\title{
Data from Minard's famous graphic map of Napoleon's march on Moscow
}
...
\usage{
data(Minard.troops)
data(Minard.cities)
data(Minard.temp)
}
...

But, AFAICS, it seems I have to save each of these in a separate .RData 
/ .rda file for them
to be found by R CMD check.  Is this correct, or is there some way to 
include them all
in a Minard.RData, via

save(Minard.troops, Minard.cities, Minard.temp, file="Minard.RData")

-Michael


-- 
Michael Friendly     Email: friendly AT yorku DOT ca 
Professor, Psychology Dept.
York University      Voice: 416 736-5115 x66249 Fax: 416 736-5814
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