Although I have been working with R for quite a while, I still find some issues of dependencies troubling. In particular, my optimr package is set up to allow users to access many function minimization tools via a single wrapper. In the past I've had notices from CRAN to fix things when called packages fail. To avoid such messages, the CRAN version has a limited set of solvers, and I've put the full version (optimrx) on R-forge.
I'm now thinking I should try to adjust optimr so that it works with all the solvers it has available (a user may not want to install them all, for example), and does not give more than a warning when one or more is unavailable. Can someone point me to best practise for doing this sort of conditional operation? While I've some ideas, I'd prefer to do things right and not give the CRAN admins any extra work. Assuming I succeed, I'll happily prepare a write-up if one is not available. Cheers, John Nash ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel
