saving graphs; jpeg(), bitmap()

Hi Tiago,

I am surprised pdf() does not work for you, I use it all the time both 
under Mac OS X 10.2.8 (old R gui, R2.0.1) and OS 10.3.6 (new R gui, R 
2.0.1). This file format is one of the things that I really like in R. 
Great output quality in small file size. Works well in all my 
applications (except Microsoft products, shame on MS).

I use JPEG only when it is requested by an editor (only happened once 
for a conference proceedings, the editor did not know a better way to 
handle without pain (for him) graphics from users on different 
platforms. Otherwise I avoid it for scientific graphs as it is 
resolution dependent and zooming quickly reveals pixels and compression 
artefacts. Beside, even though JPEG greatly reduces the size of 
bitmaps, the resulting file is still larger than PDF or other vector 
formats.

Hence I hope you can resolve what prevents you from using pdf() in your 
scripts. Did you use
dev.off()
to terminate file creation?

Sincerely,

Denis Chabot
Le Jeudi, 9 d?ce 2004, ? 04:55 Europe/Paris, 
r-sig-mac-request@stat.math.ethz.ch a ?crit :

From: Tiago R Magalhaes <tiago17@socrates.Berkeley.EDU>
Subject: [R-SIG-Mac] saving graphs; jpeg(), bitmap()

Dear Mac R-users

I want to export some plots. I have looked in the documentation and
in the R-help archives. 2 main functions jpeg(), bitmap() are used,
but I can't save any plots using them. (error logs at the end of the
email). I'm using a PowerBook G4, Panther 10.3, R.2.1.

a) when using jpeg() I seem to be missing the X11 server. I have X11
on my computer and it works fine. (XDarwin 1.3b4). On the R menu,
under Miscillaneous there is a Run X11 server. When I lauch it
reports an error:  "2004-12-08 22:24:13.082 open[10513] Couldn't
launch application:  X11.app"

b) for using bitmap() I don't have the ghostscript file. Is it a mac
file? Should I get it from somewhere?

c) I saved the files from the quartz device with the menu function.
This solves the problem somewhat, but: I would like to save jpeg
files. Even if I save pdf I would like to write it in a script.
pdf() should do it, but I can only produce files with zero bytes
using it...

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