>>>>> "Vadim" == Vadim Ogranovich <[EMAIL PROTECTED]>
>>>>> on Sun, 20 Jun 2004 15:22:41 -0700 writes:
Vadim> If you just need to ignore the errors use try or tryCatch around the
Vadim> plotting functions.
Vadim> Re: jpeg and friends. R has a notion of current
Vadim> device where it sends all its graphics. If none is
Vadim> open R opens the default device for you, which
Vadim> happens to be X11 on your system. To use a different
Vadim> device just open it, say jpeg, and all graphics will
Vadim> go there until you close it or open yet another
Vadim> device. For the list of available devices see
Vadim> ?Devices
Vadim> It might be useful to have a null device which just
Vadim> silently ignores all graphics (aka /dev/null on
Vadim> UNIX), but I don't know if R has anything like this.
Vadim> P.S. This sort of questions looks more appropriate for r-help. Just
Vadim> personal sensing, I am no master of polices.
but you are very right, Vadim.
Saurin's question would have been appropriate only for R-help.
OTOH, your "P.S." above --- being a proposal for enhancing R ---
does well fit into R-devel.
I agree that it would be nice to have a
nullDev() or dev.null()
graphics device which would efficiently discard all "plotting to
devices" graphics.
Note however that it should *not* discard the building of GROBs
(graphical objects) [grid package], i.e. it would construct all
these also for all lattice (or nlme) graphics. It would just
trash discard when grob's are being 'printed' (i.e. plotted).
A -- quite inefficient -- but easy way on Unix-alikes
{i.e. everwhere but Windows},
would be to call, e.g., postscript(file = "/dev/null")
I assume there's something equivalent on modern Windows (?)
Martin
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