[R] choose folder interactively

[Ivan Calandra]

Dear users,

I am looking for a function to choose a folder interactively, just like 
file.choose() but for a folder.

I have found tcltk::tk_choose.dir() but R hangs when I try to do 
anything and I have to force exit.
I've tried to reinstall tcltk with install.packages(), but "package 
‘tcltk’ is not available (for R version 2.15.2)" even though it's 
already installed on my computer (it comes with 'base', doesn't it?).

 From a Google Search, I have also found choose.dir(), but it looks like 
this function doesn't exist anymore since ages.

Any idea?

Thanks in advance,
Ivan

sessionInfo()
R version 2.15.2 (2012-10-26)
Platform: i386-apple-darwin9.8.0/i386 (32-bit)
locale:
[1] fr_FR.UTF-8/fr_FR.UTF-8/fr_FR.UTF-8/C/fr_FR.UTF-8/fr_FR.UTF-8
attached base packages:
[1] stats graphics grDevices utils datasets methods base


-- 
Ivan CALANDRA
Université de Bourgogne
UMR CNRS/uB 6282 Biogéosciences
6 Boulevard Gabriel
21000 Dijon, FRANCE
+33(0)3.80.39.63.06
ivan.calandra at u-bourgogne.fr
http://biogeosciences.u-bourgogne.fr/calandra