The key steps are
1) setClass and setMethod calls are executed at the top level in your
package See e.g. file mle.R in the stats4 package which ships with R.
2) The package is installed with SaveImage: yes or LazyLoad: yes.
The stats4 package is shipped with R partly as an example of using S4
classes.
On Sun, 5 Mar 2006, Patrick Giraudoux wrote:
> Dear listers,
>
> I am making a trial to move from S3 to S4... I have created some classes
> of interest and they work acceptably well for the purpose. I am now
> wondering how to make them operate in a package. In clear when a package
> is loaded (eg library(mypackage)) where should I put the class descriptions:
>
> setClass("Prior",representation(Distrib="character",Params="list"))
> setClass("SamplePrior",representation("Prior",Sample="list"))
>
> so that they are created and then usable for functions after a simple
> call to library(mypackage).
>
> It is probably something trivial, but I could not find out something
> clear on this (eg example) in the R-help-list, writing R-extensions, nor
> in S programming... and trying to get this info through reading other
> library codes has been unsuccessful.
>
> Patrick
>
> ______________________________________________
> [email protected] mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
>
--
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://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
