[R] Remove site path from .libPaths

[Rainer M Krug]

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Hi

I am sure I am missing something really basic, but I can't figure it out.

I want to start R so that I can specify the location for the Library tree. In principel simple:

As I only want it dependent on the directory I stat R in, I put a .Rprofile file in the directory.

My default path is:

> .libPaths()
[1] "/home/rkrug/R/i686-pc-linux-gnu-library/2.15"
[2] "/usr/lib/R/site-library"
[3] "/usr/lib/R/library"
> 

But I want to have it

> .libPaths()
[1] "/home/rkrug/THE_DIRECTORY/library"
[2] "/usr/lib/R/library"
> 

The first part is easy:

.libPaths("/home/rkrug/THE_DIRECTORY/library")

but how can I remove the site library?

If I set

In R 15.2 under Ubuntu, started with

R --vanilla

> .libPaths()
[1] "/home/rkrug/R/i686-pc-linux-gnu-library/2.15"
[2] "/usr/lib/R/site-library"
[3] "/usr/lib/R/library"
> .Library.site
[1] "/usr/lib/R/site-library" "/usr/lib/R/library"
> .Library
[1] "/usr/lib/R/library"
> .Library.site <- "" .Library.site
[1] ""
> .libPaths()
[1] "/home/rkrug/R/i686-pc-linux-gnu-library/2.15"
[2] "/usr/lib/R/site-library"
[3] "/usr/lib/R/library"
> .libPaths("") .libPaths()
[1] "/usr/lib/R/site-library" "/usr/lib/R/library"
> .Library
[1] "/usr/lib/R/library"
> .Library.site
[1] ""
> 


> .libPaths("") .libPaths()
[1] "/usr/lib/R/site-library" "/usr/lib/R/library"
> 

even executing

> .libPaths(.libPaths())

does not change anything.

Am I missing something or is there a bug in .libPaths()?

Cheers,

Rainer



- -- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys.
(Germany)

Centre of Excellence for Invasion Biology
Stellenbosch University
South Africa

Tel :       +33 - (0)9 53 10 27 44
Cell:       +33 - (0)6 85 62 59 98
Fax :       +33 - (0)9 58 10 27 44

Fax (D):    +49 - (0)3 21 21 25 22 44

email:      Rainer at krugs.de

Skype:      RMkrug
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