[R-pkg-devel] R-devel problem with temporary files or decompression?

[Daniel Kelley]

A data file that I’d like to use in my “oce” package is quite large, and compresses well, so I thought of putting a compressed version into inst/extdata. I want my documentation to show how to uncompress the file, partly because these files tend to compress so well that I think users might like to store them in gzipped form.

Naturally, I want to test my code using R-devel in addition to the ‘release’ version that I have on my box. Since I’ve never been able to get R-devel installed properly on OSX, I thought of submitting to win-builder. I got errors as below my signature line. What I don’t understand is the “Invalid argument”, which seems to be different from the “No such file or directory” that I would expect to get if there were no file. Any ideas on how to proceed?

Dan Kelley / Oceanography / Dalhousie University / Halifax NS Canada

> ### ** Examples
> 
> library(oce)
> ## A CTD-style rsk
> if (requireNamespace("R.utils")) {
+   file <- system.file("extdata", "sample.rsk.gz", package="oce")
+   tmp <- tempfile(fileext=".rsk")
+   R.utils::decompressFile(file, destname=tmp, ext="gz", FUN=gzfile, remove=FALSE)
+   rsk <- read.rsk(tmp)
+   ctd <- as.ctd(rsk)
+   plot(ctdTrim(ctd))
+ }
Loading required namespace: R.utils
Warning in file(file, "r") :
  cannot open file 'd:/RCompile/CRANguest/R-devel/oce.Rcheck/examples_i386/D:\temp\RtmpGUYumI\file29ac3bed3fed.rsk': Invalid argument
Error in file(file, "r") : cannot open the connection
Calls: read.rsk -> file
Execution halted
** running examples for arch 'x64' ... ERROR