Ted Drain wrote: > I've been investigating performance problems we've been having w/ the Qt > backends. One problems is that zooming takes forever. I've put a lot of > timing loops into the backends to see where things are happening and found a > couple of interesting items. > > The first is that agg seems to get much slower as you zoom in. The agg draw > time goes up as the zoom level goes up. These are plots that are completely > done w/ the Ellipse patch. Using the Arc patch helps but is about 10% > slower when not zooming. > Out of curiosity -- are you using matplotlib 0.91.2, or the SVN trunk? The SVN trunk has about 25% faster out-of-bounds vertex removal that should improve this. > The second (and reason for the email), is that the QtAgg backends are > redrawing the whole plot twice when zooming w/ the mouse. It looks like Darren has addressed this part...
Cheers, Mike -- Michael Droettboom Science Software Branch Operations and Engineering Division Space Telescope Science Institute Operated by AURA for NASA ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Matplotlib-devel mailing list Matplotlib-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-devel
