Sorry, I should retract my claim that it's too late to set TMPDIR in .Renviron. It does indeed work on Linux and R 4.0.2, e.g.
$ cd $ mkdir test $ cd test $ echo "TMPDIR=$PWD" > ./.Renviron $ cat ./.Renviron TMPDIR=/home/hb/test Rscript --no-init-file -e "tempdir()" [1] "/home/hb/test/RtmpyH47tc" Hmm... either this has changed "recently" or I've got it wrong all the time. Eitherway, I need to revise the vignette in my 'startup' package. Sorry for the misleading comment. So, back to your comment about it does *not* work, that is, ~/.Renviron is not read, when you double-click on an .RData file. I just tried with R 4.0.2 in a Windows 10 VM and I think I can reproduce what you're describing. The problem seems to be that when one launches Rgui via double-clicking .RData, the Rgui will only read ./.Renviron, that is, the .Renviron file that is located in the same folder as the .RData file. It will never load ~/.Renviron (e.g. C:/Users\alice/Documents/.Renviron) unless the .RData file is in that folder too. This looks odd to me but it could be that I made another mistake in my conclusions above. I let someone else with a less mushy brain take over from here. /Henrik On Sat, Aug 29, 2020 at 4:31 PM Jinsong Zhao <jsz...@yeah.net> wrote: > > 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 > >> > >> ______________________________________________ > >> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > >> https://stat.ethz.ch/mailman/listinfo/r-help > >> PLEASE do read the posting guide > >> http://www.R-project.org/posting-guide.html > >> and provide commented, minimal, self-contained, reproducible code. > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.