Sylvain ARCHENAULT wrote:
Hello,
I am trying to make a R package with S4 classes. To do so, i do as usual
(when no S4 were involved, i.e without NAMESPACE file) and I've got errors
in class refering to other classes in the package.
Probably because the files are collated in such a way that some classes
are referenced (in other class definitions or methods) before they are
defined? You can use the Collate: field in DESCRIPTION, or adopt a
convention such as defining all classes (in a sensible way) in a file
such as AllClasses.R (which happens to collate early).
So I use a NAMESPACE file to declare classes, it works fine, but now I
have to declare each functions in the NAMESPACE file. Since I have a lot
of functions, it's not very easy.
My strategy is to
exportPattern("^[^\\.]")
in NAMESPACE, and use .funcName to mark functions that I don't want to
export. This exports the generics and implicitly the methods defined on
those generics. If you define methods on generics from other packages,
then it's necessary to
exportMethods
an exportMethodsPattern might be a useful addition (either to my
knowledge or to R).
Hope that helps
Martin
Is there a way to exports all methods in one statement ? or is there a
tool which can help generating the NAMESPACE file ?
Thanks for your help,
Sylvain.
PS: Could you please CC me in your replies since I do not subscribe to the
list.
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Martin Morgan
Computational Biology / Fred Hutchinson Cancer Research Center
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