Hi, So MASS::huber(1:10) seems to do the job i.e. (1) loads the MASS package (if it's installed), (2) does not pollute the search path, (3) no 'R CMD check' warning if MASS is listed in Suggests, and (4) descent error message if MASS is not installed:
> MASS::huber(1:10) Error in loadNamespace(name) : there is no package called ‘MASS’ So is this recommendable or are there good reasons for stating in the manual that "this approach is usually not recommended"? (In which case it would be good to know what the recommended way is.) Thanks, H. On 02/25/2013 02:56 PM, Hadley Wickham wrote:
loadNamespaces loads but does not attach the package. Suggests: is enough to quieten the warning with ~/tmp$ R --version R Under development (unstable) (2013-02-21 r62017) -- "Unsuffered Consequences" This is consistent with RShowDoc("R-exts") section 1.1.1 Namespaces accessed by the ‘::’ and ‘:::’ operators must be listed here, or in ‘Suggests’ or ‘Enhances’ (see below).I guess that's changed since I last tried it. (My reproducible example forgot to include MASS in the Suggests :/ ) Thanks! Hadley
-- Hervé Pagès Program in Computational Biology Division of Public Health Sciences Fred Hutchinson Cancer Research Center 1100 Fairview Ave. N, M1-B514 P.O. Box 19024 Seattle, WA 98109-1024 E-mail: hpa...@fhcrc.org Phone: (206) 667-5791 Fax: (206) 667-1319 ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
