edd at debian.org
Sat Mar 27 03:35:52 CET 2004
On Fri, Mar 26, 2004 at 09:25:02PM -0500, Scott Bartell wrote:
> Shouldn't the following commands produce a nice jpeg file, or am I
> missing something?
> R bug or my misunderstanding?
The latter. The idiom is
jpeg(file="/tmp/test.jpeg") # help help(jpeg) for defaults
dev.off() # important to close device
i.e. you open a device (as this, or pdf(), png(), ...), do your plotting and
then finalise matters by dev.off().
A frequently belaboured issue is that several of the graphics format croak
in 'headless' sessions without a $DISPLAY (e.g. for a webserver). They
really do need a display to compute font metrics etc. The canonical way out
is to the virtual display for which XFree86 has a special driver.
The relationship between the computed price and reality is as yet unknown.
-- From the pac(8) manual page
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