[R] PNG diver problem
andys at neptuneandco.com
Thu Nov 29 18:40:23 CET 2001
Let me expand my question some. I use R in batch mode for interactive
web statistics (via RH7.2 and R1.3). I have experimented with using the
Tcl/Tk and SJava packages, as well as starting gui apps from batch mode.
I haven't really been able to start any of them and I assume this is
due to the discussion that has been going on here. I work in parallel
with someone who works in W2000. He doesn't seem to have any problem
with starting this kind of stuff. It is a real development hinderance
not to be able to start GUI apps from batch mode. Does anyone out there
have any suggestions?
Andrew Schuh wrote:
> Do you have an example of this (code-wise)? I am using RH7.2 and R1.3
> and do a lot of batch processing. Currently I use ImageMagick to
> convert postscript images generated by R since I have had some trouble
> using the PNG device (strangely translated axis lines, etc). However,
> it would be nice to be able to batch out bitmaps without using
> Peter Dalgaard BSA wrote:
>>apjaworski at mmm.com writes:
>>>I got a couple of answers already indicating that this is a known
>>>"problem". Thanks to everyone who responded and apologies for reposting a
>>>known problem. I must have missed the last post about this - I searched
>>>the mailing list archive and found it about a year ago. Apparently, one of
>>>the solutions is to use the bitmap driver which produces the PNG files by
>>>I noticed that the png help page mentions that it depends on the x11
>>>device. It just was not clear to me that one cannot use x11 in batch mode.
>>>Finally, I am still curious why this thing works under Windows. Was the
>>>png driver rewritten for it? Does it still depend on the windows device
>>>but it can be invoked in batch mode?
>>I think it works in Linux too if you explicitly set you DISPLAY
>>variable (w/ Sys.putenv()), provided that the display is active and
>>you have the permissions to access it when the code runs. Windows has
>>no such thing and will not let you do anything without having the
>>display open anyway...
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