On 04.05.2019 00:33, Jarrett Phillips wrote:
Hello,
My R package has a function with an argument to specify whether numerical
results should be outputted to a CSV file.
CRAN policy stipulates verbatim that
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). Installing into
the system’s R installation (e.g., scripts to its bin directory) is not
allowed.
I know I should use tempdir() within my package function, but I've not seen
any examples on how this is best done within existing R packages.
Within my package documentation examples for my function, I have the lines:
\dontshow{.oldwd <- setwd(tempdir())}
1. the user who copies the example to the R console does not change to
the tempdir() and still overwrites files in her/his filespace.
2. And even if you o not wrap this in \dontshow, a user may oinly copy a
part and then changes the workdir.
Why not simply use tempdir() in the code that writes the file in the
example?
Best,
Uwe Ligges
... some R code ...
\dontshow{setwd(.oldwd)}
but I have been informed that this is not the accepted way.
Any ideas from the community on how do do this properly?
Thanks for the help!
Cheers,
Jarrett
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