[R] cron job install/update problems: tcltk can't find display (installing e.g., pbatR)
p.dalgaard at biostat.ku.dk
Fri Jan 20 19:09:11 CET 2006
Paul Johnson <pauljohn32 at gmail.com> writes:
> On Fedora Core Linux 4, I have a cron job that causes R to update all
> packages and install new ones. Lately, I notice in the log that some
> packages fail to install. These are ones that assume X is running.
> For example, the pbatR install requires tcltk to be loaded, and then
> the install fails because in a cron job, there is no DISPLAY
> environment. I suppose the same happens if you try to install R
> packages in the console, without X running?
> Error output is pasted here. I wonder if you can advise me whether
> this is the kind of thing that can be fixed in the cron job or not.
> I've verified that pbatR does install interactively (because tcltk
> does start). If you think this is a pbatR-specific problem, i will
> contact the author directly. When I have the repos option set, the
> interactive install does not cause any tcltk widgets to pop up, so I
> wonder if it is really necessary.
The procedure used by CRAN (e.g.) for the automated testing involves
running a virtual X server (Xvfb).
On FC4 you'll need to install the RPM xorg-x11-Xvfb-6.8.2-37.FC4.49.2,
start it as part of the cron job and point your DISPLAY variable at
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
More information about the R-help