Yes, I am on Lion.  So that explains what is happening.  Thanks.
John

John Maindonald             email: john.maindon...@anu.edu.au
phone : +61 2 (6125)3473    fax  : +61 2(6125)5549
Centre for Mathematics & Its Applications, Room 1194,
John Dedman Mathematical Sciences Building (Building 27)
Australian National University, Canberra ACT 0200.
http://www.maths.anu.edu.au/~johnm

On 07/10/2011, at 12:35 AM, Simon Urbanek wrote:

> Are you on Lion? (You failed to mention that crucial detail)
> If so, R cannot detect window session on Lion (the OS says there is none even 
> if there is one) so it must assume that you are using ssh or other tunneling, 
> so if falls back to whatever other device it can use.
> 
> Cheers,
> Simon
> 
> 
> On Oct 5, 2011, at 9:31 PM, John Maindonald wrote:
> 
>> When I start up R (or at least 64-bit R) from the command line
>> or from ESS, and plot a graph without first opening a graphics
>> screen window, I get an X11 window.  
>> 
>> If I type capabilities(), I get:
>> 
>>> capabilities()
>>  jpeg      png     tiff    tcltk      X11     aqua http/ftp  sockets 
>>  TRUE     TRUE     TRUE     TRUE     TRUE     TRUE     TRUE     TRUE 
>> libxml     fifo   cledit    iconv      NLS  profmem    cairo 
>>  TRUE     TRUE    FALSE     TRUE     TRUE     TRUE     TRUE 
>> 
>> Given that "aqua" is available, why do I not get a quartz window? 
>> (I can of course open such a window.)
>> 
>>> sessionInfo()
>> R version 2.13.2 (2011-09-30)
>> Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)
>> 
>> locale:
>> [1] C
>> 
>> attached base packages:
>> [1] stats     graphics  grDevices utils     datasets  methods   base     
>> 
>> other attached packages:
>> [1] lattice_0.19-33
>> 
>> loaded via a namespace (and not attached):
>> [1] grid_2.13.2  tools_2.13.2
>> 
>> John Maindonald             email: john.maindon...@anu.edu.au
>> phone : +61 2 (6125)3473    fax  : +61 2(6125)5549
>> Centre for Mathematics & Its Applications, Room 1194,
>> John Dedman Mathematical Sciences Building (Building 27)
>> Australian National University, Canberra ACT 0200.
>> http://www.maths.anu.edu.au/~johnm
>> 
>> _______________________________________________
>> R-SIG-Mac mailing list
>> R-SIG-Mac@r-project.org
>> https://stat.ethz.ch/mailman/listinfo/r-sig-mac
>> 
>> 
> 
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