On Tue, 15 Mar 2011, Hadley Wickham wrote:
Hi all,Does anyone have any advice or experience storing package settings between R runs? Can I rely on the user's home directory (e.g. tools::file_path_as_absolute("~")) to be available and writeable across platforms?
No. First, please use path.expand("~") for this, and it does not necessarily mean the home directory (and in principle it might not expand at all). In practice I think it will always be *a* home directory, but on Windows there may be more than one (and watch out for local/roaming profile differences).
Second, it need not be writeable, and so many package authors write rubbish in my home directory that I usually arrange it not be writeable to R test processes.
If you want something writeable across processes, use dirname(tempdir()) .
Hadley -- Assistant Professor / Dobelman Family Junior Chair Department of Statistics / Rice University http://had.co.nz/ ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
-- Brian D. Ripley, rip...@stats.ox.ac.uk 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 ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
