xvfb? cron job updates R packages, fails on some requiring X11
On 19/01/2017 11:52 AM, Paul Johnson wrote:
In Centos 7 systems, I wrote a script that runs on the cron and I
notice some package updates and installs fail like this:
Error : .onLoad failed in loadNamespace() for 'iplots', details:
call: .jnew("org/rosuda/iplots/Framework")
error: java.awt.HeadlessException:
No X11 DISPLAY variable was set, but this program performed an
operation which requires it.
Error: loading failed
Execution halted
ERROR: loading failed
* removing ?/usr/share/R/library/iplots?
* restoring previous ?/usr/share/R/library/iplots?
I can log in interactively and run the same install successfully.
I understand I need something like xvfb to simulate an X11 session,
but I don't understand how to make it work. Can one of you give me an
idiot's guide on what to do?
pj
I don't know if iplots offers this, but a package should be able to work in a non-X11 environment. rgl does it by checking the RGL_USE_NULL environment variable. Duncan Murdoch