[R] generating graphical output when DISPLAY is not set?
simon_cawley at affymetrix.com
Tue Apr 30 22:51:20 CEST 2002
Is it possible to generate graphical output (to a file) when the
DISPLAY environment variable is not set? Here's the problem:
$ unset DISPLAY
Error in X11(paste("png::", filename, sep = ""), width, height, pointsize, :
unable to start device PNG
In addition: Warning message:
unable to open connection to X11 display`'
I want to have a process running on a server call R to generate graphical
output, and the problem is that I'm not guaranteed to have a valid
DISPLAY set. I have some clumsy workarounds, but it would be cleaner if
if I had some way to have R not require the DISPLAY.
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