[R] jpeg in batch mode

From: Elizabeth Purdom <epurdom_at_stat.berkeley.edu>
Date: Thu, 21 Feb 2008 13:00:42 -0800


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::", quality, ":", filename, sep = ""), width, :

         unable to start device JPEG
In addition: Warning message:
could not open JPEG file xyz.jpeg

I don't have this problem with pdf(); but the images I want to draw are really massive in terms of the number of points/images so they take forever to open in adobe (as well as being HUGE) so I'd like them in jpeg. Can I get around this somehow? I saw other people posted similar problems, but saw no solutions.

R-2.6.0, GNU/Linux

Thanks,
Elizabeth

My caveat from above about the jpeg working as long as I'm signed on: one time I got the mysterious error:
>

jpeg("~/batch5Effect/ProbPbsets_summaryHeatmaps%03d.jpeg",height=1200,width=800) Error in jpeg("~/batch5Effect/ProbPbsets_summaryHeatmaps%03d.jpeg", height = 1200, :

   X11 fatal IO error: please save work and shut down R

Even though it had just correctly done this same basic command a few lines back. I redid it (without changing anything that I was aware of) and it worked fine. So I don't think it's related.



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