Wow, I've never seen those. Looking into them RNCBI* are all part of
one super-package and NCBIR2R is for one specific job (annotating
SNPs)
I had envisaged something at a "lower level" than either of these,
akin to Biopython's Bio.Entrez which I've used quite a lot:
http://biopython.org/DIST/docs/api/Bio.Entrez-module.html
The idea being you can pass as many arguments as you want to the
relevant function, and it will make the url needed to talk to the
database.
Presuming everything works, for most databases you get an xml file
which can be parsed to get the things people are most likely to want
to use from it (along with the original file for people that want to
go deeper).
Of course, it's all down to the sorts of things ropensci wants to do -
and the level at which you want the packages to operate.
Thoughts?
David