[R] How do I know where is R? - VB Programming

[Gabor Grothendieck]

This works on Linux (at least under bash shell) and also on Windows
Vista and presumably earlier versions of Windows as well:

R --vanilla --slave -e "R.home()"

but the R part at the beginning does have the problem that it
only works if R is on your path.

If, on Windows, you normally double click the R icon on your
desktop or use the R utilities in the batchfiles distribution
there would be no need to have R on your path.  The batchfiles
utilities use the registry, and failing that heuristics, to locate R.

On Wed, Jul 15, 2009 at 2:13 AM, Peter Dalgaard<p.dalgaard at biostat.ku.dk> wrote:
> Duncan Murdoch wrote:
>>
>> On 14/07/2009 7:22 PM, Haoda Fu wrote:
>>>
>>> Dear all -
>>>
>>> Is there anyone know how to let VB or C# know where I install R
>>> automatically(i.e. auto detect R directory)?
>>
>> On Windows if you run the installer it will record its location in the
>> registry, under *\Software\R-core\R\, where * is HKLM or HKCU, depending on
>> what permissions the user had who installed it.  But some users don't run
>> the installer (maybe because someone else installed it on a network, or they
>> built it themselves) so that isn't completely reliable.
>
> On Unix/Linux we have
>
> $ R RHOME
> /usr/lib/R
>
> but same thing doesn't work with Rterm on Windows AFAICS. I wonder if it
> shouldn't?
>
>
> --
>   O__  ---- Peter Dalgaard             Øster Farimagsgade 5, Entr.B
>  c/ /'_ --- Dept. of Biostatistics     PO Box 2099, 1014 Cph. K
>  (*) \(*) -- University of Copenhagen   Denmark      Ph:  (+45) 35327918
> ~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)              FAX: (+45) 35327907
>
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