[R] ssh and X11 forwarding

[Vladimir Eremeev]

> Everything is enabled, but still doesn't work.
> xeyes and xclock give errors (Error: Can't open display: localhost:10.0),
> R produces Rplots.ps
> 
> I also have a windows box, and go to chena using PuTTY.
> I have cygwin with X server installed on it.
> If I enable X11 forwarding in PuTTY, start cygwin's X11 server on Windows and 
> try to run xeyes or xclock, I see their windows on my local MS Windows 
desktop,
> R still produces Rplots.ps.

Got it!
It was long time ago, R (2.3.0) was compiled without X support, because 
development headers and libraries were not installed on that computer.