I read the help page, I don't understand it very well, since I set the
environmental variable TMPDIR in .Renviron. What confused me is when
double clicking the *.RData to launch R, the tempdir() does not respect
the environmental variable TMPDIR, but launch R by double clicking Rgui
icon does.
Best,
Jinsong
On 2020/8/30 0:36, Henrik Bengtsson wrote:
It is too late to set TMPDIR in .Renviron. It is one of the
environment variables that has to be set prior to launching R. From
help("tempfile", package = "base"):
The environment variables TMPDIR, TMP and TEMP are checked in turn and
the first found which points to a writable directory is used: if none
succeeds ‘/tmp’ is used. The path should not contain spaces. **Note
that setting any of these environment variables in the R session has
no effect on tempdir(): the per-session temporary directory is created
before the interpreter is started.**
/Henrik
On Sat, Aug 29, 2020 at 6:40 AM Jinsong Zhao <jsz...@yeah.net> wrote:
Hi there,
When I started R by double clicking on Rgui icon (I am on Windows), the
tempdir() returned the tmpdir in the directory I set in .Renviron. If I
started R by double clicking on a *.RData file, the tempdir() return the
tmpdir in the directory setting by Windows system. I don't know whether
it's designed.
> sessionInfo()
R version 4.0.2 (2020-06-22)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 18363)
...
Best,
Jinsong
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