It is explained here: https://cran.r-project.org/web/packages/policies.html Section about source packages: "Packages should not write in the user’s home filespace (including clipboards), nor anywhere else on the file system apart from the R session’s temporary directory (or during installation in the location pointed to by TMPDIR: and such usage should be cleaned up)."
And I think the policy was different at some point in the past. Anyway, it's a good policy - just get a temporary folder and your desired file name - e.g.: file.path(tempdir(), "your_file.png") Best regards, David Cortes On Thu, 2020-07-23 at 12:44 +0200, Helmut Schütz wrote: > Dear Duncan, > > Duncan Murdoch wrote on 2020-07-22 23:48: > > On 22/07/2020 5:40 p.m., Helmut Schütz wrote: > > > > > > Duncan Murdoch wrote on 2020-07-22 21:42: > > > > > > > During a check, it probably wouldn't, because you aren't > > > > allowed to > > > > write to "~/". Your package should be writing to tempdir(), or > > > > a > > > > location entered by the user. > > > > > > The user is asked to provide a certain path indeed. Only if none > > > is > > > provided, the fallback is "~/" (which is always writable). > > > > That disqualifies your package from inclusion on CRAN. > > Can you please point to such a policy in the R-Extension Manual? > Eight > versions of the package were accepted by CRAN and three times checked > by > members of the team. > > BTW, the package passed on winbuilder: > Your package replicateBE_1.0.14.9000.tar.gz has been built (if > working) > and checked for Windows. > Please check the log files and (if working) the binary package at: > https://win-builder.r-project.org/k2tGfNoY7y88 > The files will be removed after roughly 72 hours. > Installation time in seconds: 41 > Check time in seconds: 251 > Status: 1 NOTE > R version 4.0.2 (2020-06-22) > Hence, I suspect that there is a problem with CHECK which I run > locally > on my machine. > > > If no destination is provided and tempdir() isn't acceptable, you > > shouldn't write anything. The user may be keeping an > > irreplaceable > > piece of information in "~/test.png", and your package would > > destroy > > it. It's not your decision to make to trespass on the user's file > > space. > > The package is used in a regulated environment (e.g., for the FDA). > The > name of the file is always unique, i.e., depends on the input. The > code > checks whether a file with the same name already exist and -- if yes > -- > asks the user to confirm overwriting it. > The man-pages make clear that a path should be provided. If none is > provided, a message is issued informing the user that results are > saved > in the home directory. By using tempdir() the user would have to > move > all files to another location before the session is closed. > > Helmut > ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel
