[R] slow graphics download
Prof Brian Ripley
ripley at stats.ox.ac.uk
Mon Oct 20 19:34:12 CEST 2008
I suspect that you need to set the type= in X11(): see its help page.
'type = "nbcairo"' is the same device as 'type="cairo"' without
buffering: which is faster will depend on the X11 connection.
Both will be slower than 'type = "Xlib"', especially on a slow X11
connection as all the rendering is done on the machine running R
rather than in the X server.
Basically, R's X11 device is now by default optimized for quality rather
than speed, and your unusual usage needs the reverse.
On Mon, 20 Oct 2008, Paul Murtaugh wrote:
> I often work from home, running R on my office computer and displaying
> interactive graphics on my home computer using X11. This was always more
> sluggish than sitting at my office computer, obviously, but recently the
> graphics transfer has become painfully slow -- so slow, that I now divert the
> images to a postscript file and display that file remotely (which takes a
> second or two).
> I don't know what changed between the old days and now -- I may have
> installed a new version of R and updated the o.s. (ubuntu) on both computers,
> but am unsure of the timing. I realize this makes troubleshooting difficult,
> but I am hoping someone can offer a tip on where to begin.
> R-help at r-project.org mailing list
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
Brian D. Ripley, ripley at stats.ox.ac.uk
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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