I did some more digging and it looks like this changed with the transforms. curve4 is now being called instead of arc_to, which uses beziers. On Dec 9, 2007 10:11 AM, Charlie Moad <cw...@gm...> wrote: > I found a great doc I am linking. The 4 spline method we are using > has an error tolerance of 2.7*10^-4, which I am pretty sure is coming > into play here. If we move to an 8 spline approach, it would reduce > the error a few orders of magnitude. > > http://www.tinaja.com/glib/ellipse4.pdf > > - Charlie > > > > On Dec 8, 2007 9:09 AM, John Hunter <jd...@gm...> wrote: > > On Dec 7, 2007 6:02 PM, James Evans <jre...@ea...> wrote: > > > > > There appears to be an issue with the agg backend with how it is drawing > > > ellipses (or maybe it is how matplotlib uses agg), but the attached script > > > shows how a point, which should be coincident with the center circle, but it > > > is not. The second plot shows the same data, but using a custom (and much > > > slower) algorithm for drawing the ellipses, where the point is properly > > > coincident. > > > > Thanks for the test case James -- I will try and sort this out ASAP. > > Michael, do you see the same on the transforms branch? The branch is > > on a newer version of agg so if not, perhaps it is a simple matter of > > upgrading agg on the trunk. I'm travelling currently bt will be back > > omorrow and ill look at this ASAP. > > > > JDH > > > > ------------------------------------------------------------------------- > > SF.Net email is sponsored by: > > Check out the new SourceForge.net Marketplace. > > It's the best place to buy or sell services for > > just about anything Open Source. > > http://sourceforge.net/services/buy/index.php > > _______________________________________________ > > Matplotlib-devel mailing list > > Mat...@li... > > https://lists.sourceforge.net/lists/listinfo/matplotlib-devel > > >