On Thu, 16 Oct 2008, Gang Chen wrote:
Thanks a lot for the clarifications and helpful information, Prof. Ripley.
A related question along the line: The reason I wanted to have quartz instead
of X11 was that quartz() automatically provides antialiasing effect when
drawing lines when using dev.new(). I just noticed that on
http://developer.r-project.org/blosxom.cgi/R-devel it says "dev.new() gains a
'...' argument which can be used to passed named arguments which will be used
if appropriate to the device selected". So does it mean I can expect that I
could specify an option such as "antialias" in dev.new() in version 2.8.0 so
that I would have antialiasing effect in case X11() is invoked?
No. Antialiasing is the default in the Cairo type on X11 in 2.7.x, but
you can set it on/off via X11.options().
Thanks again,
Gang
On Oct 15, 2008, at 5:54 PM, Prof Brian Ripley wrote:
On Wed, 15 Oct 2008, Gang Chen wrote:
When invoking dev.new() on my Mac OS X 10.4.11, I get an X11 window
instead of quartz which I feel more desirable. So I'd like to set
the default device to quartz. However I'm confused because of the
following:
Sys.getenv("R_DEFAULT_DEVICE")
R_DEFAULT_DEVICE
"quartz"
getOption("device")
[1] "X11"
What's going on?
I don't know (it is your machine), but here's my guess ....
I dom't see R_DEFAULT_DEVICE set on my Mac, but note that
R_INTERACTIVE_DEVICE takes precedence in interactive use. So something in
your setup is different from mine, maybe some startup files or R.app
preferences? The first diagnostic step is to see if R_INTERACTIVE_DEVICE
is set and why R_DEFAULT_DEVICE is set (and see below for why the current
setting is dangerous).
Also is file Renviron under /Library/Frameworks/R.framework/Resources/
etc/ppc/ the one I should modify if I want to change some environment
variables? But I don't see R_DEFAULT_DEVICE there.
As to where you should set it, it depends on who you want to set it for,
and how you run R (from R.app or from the command line). But Renviron is
not the right place: a file Renviron.site in that directory would be if you
want a system-wide setting (see ?Startup). But do be careful, as if you
make quartz the default for remote interactive or batch sessions you are
likely to get undesirable behaviour (possibly even crashes for some R
versions). In short, don't set R_DEFAULT_DEVICE to an screen device.
TIA,
Gang
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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