From: Prof Brian Ripley <[EMAIL PROTECTED]> Date: June 17, 2004 12:15:01 PM CEST To: Meinhard Ploner <[EMAIL PROTECTED]> Cc: [EMAIL PROTECTED] Subject: Re: [R] packages & data-sets
On Thu, 17 Jun 2004, Meinhard Ploner wrote:
It's possible to create a package with functions and data, from which the use
library(pkg-name)
"attaches" not only the functions, but also the data? I want avoid to use
data(dataset, package="name")
because this makes a global copy of the data-set ...
What do you mean by `global'? You cannot have access to R data without
having it in memory and having it visible. You don't need to have it in
the user workspace (.GlobalEnv), though. Suggestions:
1) See how MASS does it. Data objects are loaded into the MASS namespace
on first use.
After some playing-around I found that I forgot to insert in NAMESPACE
export(package.load.data) which I defined as you in MASS/R (MASS.load.data).
Now all works fine and I'm very happy about this solution!
Thanks a lot! Meinhard Ploner
2) See ?attach and attach an R save file containing your datasets -- wasteful unless you use them all at once.
It is planned that data() will be superseded by a better mechanism in R
2.0.0 (but that plan has slipped a bit already, which is why MASS does it
differently).
-- 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
______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
