On 03/05/2019 6:33 p.m., 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())} ... 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?
Use the tempfile() function to generate a filename in the temporary directory. You might want to use the "pattern" or "fileext" arguments, but don't change the "tmpdir" argument.
Then write to that file. For example, filename <- tempfile(fileext = ".csv") write.csv(df, filename) It's a good idea to clean up afterwards using unlink(filename) ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel
