[R-sig-Debian] X trouble in R on Ubuntu

[Michael Rutter]

On 07/25/2010 05:19 PM, Michael Wesolowski wrote:
> Hello,
>
> As per the subject, I am unable to do the following:
>
> plot(1);
>
> The error message I get is ( as user postgres)
>
> No protocol specified
> Error in X11(d$display, d$width, d$height, d$pointsize, d$gamma,
> d$colortype,  :
>    unable to start device X11cairo
> In addition: Warning message:
> In function (display = "", width, height, pointsize, gamma, bg,  :
>    unable to open connection to X11 display ''
>
> I have tried looking around before posting to the mailing list, but I don't
> have the Linux knowledge to make this work.
>
> Some helpful information might be the truncated output from capabilities() -
> the output suggests the probable cause for this error, but I don't know how
> to fix it.
>
> as user postgres:
>> capabilities()
> X11     cairo
> FALSE     TRUE
>
>
> as user root:
>> capabilities()
> X11     cairo
> TRUE     TRUE

More information about you system will be helpful.

What version of Ubuntu?
What version of R?
Did you install R as a binary (with apt-get or synaptic, for example) or 
did you compile from source?
Is "postgres" a user you created or a creation of installing a database?
Are you running the command via batch or interactive with an R prompt?

Given the user "postgres" it sounds like you are trying to run an R 
script for some database functions.  Any general information about what 
you are trying to do will also be helpful.

Michael

-- 
Dr. Michael A. Rutter
School of Science
Penn State Erie, The Behrend College
Station Road
Erie, PA 16563
http://math.bd.psu.edu/faculty/rutter