On 8/25/2014 2:08 PM, Jonathon Love wrote:
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hey,
i was able to solve the problem by explicitly putting
R_LIBS_USER=''
in the /etc/Renviron file (it isn't enough simply to comment the entry
out, because it has a default value that magically comes from
somewhere else)
It is worth pointing out that what you have done is removed the personal
library from the default list of libraries. So when loading a library,
it won't be found in a (the) personal library. However, a user can
circumvent this easily if they wish, either by adding a directory to the
library path list via .libPaths() or by specifying lib.loc in a call to
library() (or a variety of other ways). In other words, a user can still
"load[...] user packages" with a little additional effort. For your use
case, this may be sufficient. But I didn't want you to have the
impression that this made it impossible to load additional packages.
cheers
On 25/08/2014 9:59 pm, David Winsemius wrote:
On Aug 25, 2014, at 7:11 AM, Ista Zahn wrote:
On Mon, Aug 25, 2014 at 5:58 AM, Jonathon Love <j...@thon.cc>
wrote:
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Hi,
I'm trying to prevent the loading of packages from the
'personal library'
Of behalf of the users you are about to cripple, please, do not
do that!
Hello jonathon and Ista;
(I think this might be the first time I've seriously with Ista.)
I've been in the situation where I had multiple copies of packages
in 2 different libraries and wanted to do exactly what was
requested. I'm assuming that the "main" library directory is
something other than '~/Library/R/3.0/library' and permissions
allow packages to be accessed and placed there. A quick method
would simply be to execute this at the command line (or if it
needed to be repeated in .Rprofile) :
.libPaths( .libPaths()[!which(.libPaths() ==
'~/Library/R/3.0/library')] )
I suppose you could wrap some testing around this to prevent the
removal of that path if it were the only one or if it were the path
to the base and stats packages. Fo me this reports correctly that
my base package is not there:
grepl("~/Library/R/3.0/library" ,
attr(packageDescription('base'), "file") )
[1] FALSE
But this raises the question. Why is this happening and why don't
you just delete the directory?
--
Brian S. Diggs, PhD
Senior Research Associate, Department of Surgery
Oregon Health & Science University
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