On Thu, 17 Nov 2016, Helmut Kudrnovsky wrote:
My Windows 7, GRASS 7.0.4 shows identical .libPaths() values both inside
and out with RGui. I don't know how the location of the personal library
folder is recorded - is it in the registry? How might one know? It looks
like:
Sys.getenv("R_LIBS_USER")
tested within a winGRASS7.0.5 session:
Sys.getenv("R_LIBS_USER")
[1] "C:\\Users\\test/R/win-library/3.3"
.libPaths()
[1] "C:/Program Files/R/R-3.3.1/library"
R_LIBS_USER is listed there within the winGRASS session, but the path itself
looks odd.
Unfortunately, I couldn't reproduce this with stand-alone GRASS 7.0.5 or
7.2, Windows 7 Pro, R 3.3.2. I see the same .libPaths() values inside and
outside. But see below - I found out how to reproduce the problem
predictably.
The reason was (of course) that I'd forgotten that I had set R_LIBS_USER
in Control Panel -> System and Security -> System -> Advanced system
settings -> Environment Variables. I'd done this as a response to the
extra work caused at each annual change of the default address as R's
version was incremented. See also:
https://stat.ethz.ch/R-manual/R-devel/library/base/html/libPaths.html
So a workaround might to use the R_LIBS_USER environment variable in that
setting, checking that the directory exists. R uses it internally as
generated, but doesn't export it. I don't know how this plays
cross-platform.
Best wishes,
Roger
outside a winGRASS7.0.5/7.2.svn session, everthing is ok with these
variables (see above).
-----
best regards
Helmut
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