search for: png2

I'd like to use an R CMD BATCH script as part of a chron job that is set up to run every hour. The trouble is that the script creates a graphical output in a file via png(), and apparently this in turn works through X. When cron invokes the job, no X server is available -- I suppose that the DISPLAY variable is not set -- and so R exits with an error message in the output file. (If I run the

Hello, I am running some commands in batch on a server that I SSH into; some of the commands call jpeg(). If I continue to stay signed on (with my xwindows working on my machine) then the jpeg() command works (with a single caveat, below). If I leave it and sign off (with a nohup command in front of my BATCH) then jpeg gives me an error like this: Error in X11(paste("jpeg::",

Thanks for your reply. I searched for the error on Google before resorting to the R forum (help group). I tried Sys.env(...) too, but didn't resolve the error I get. Hence I am looking for solution. -- -----Original Message----- From: Thierry Onkelinx [mailto:thierry.onkelinx at inbo.be] Sent: Thursday, February 01, 2018 10:57 AM To: Sariya, Sanjeev <ss5505 at cumc.columbia.edu>