On Wed, Apr 30, 2008 at 10:26 AM, Maarten Blaauw <[EMAIL PROTECTED]> wrote:
> > The now default Cairo results in much prettier graphs, but dense graphs > such > as plot(rnorm(1e4)) take considerably longer to plot than using > X11(type="Xlib"). This has already been mentioned, but I was wondering if > we > users could expect Cairo speed increases in the near future? > I'm skeptical that the base performance of the Cairo library will improve much, but there has long been talk of a hardware-accelerated backend. Most recently, someone came up with one based on OpenVG (and its ShivaVG implementation using OpenGL and C). It's a long way from being part of base Cairo (or even released on its own). Of course, it would really help to optimize at a higher level (e.g. use caching to avoid re-rendering the same glyph thousands of times). I've also thought about using a vector-based API directly on top of OpenGL, like what Qt (and now the clutter project) has, but that's getting off-topic. > > >Slower under some circumstances (although on the test systems much faster > than packages Cairo and cairoDevice). This will be particularly true for > X11() with a slow connection between the machine running R and the X > server. > > Using R 2.7.0 on Ubuntu 8.04 (Pentium 4 1.70 GHz on one machine and > Centrino > Duo on another) > -- > View this message in context: > http://www.nabble.com/New-version-of-X11%2C-png-and-jpeg-tp15672580p16987759.html > Sent from the R devel mailing list archive at Nabble.com. > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
