Re: [matplotlib-devel] Native backend for Mac OS X

[John H. <jd...@gm...>]

On Tue, Oct 28, 2008 at 12:24 PM, Eric Bruning <eri...@gm...> wrote:
> Nice work ... and an ambitious effort.
>
> I've gotten it running, and am a bit perplexed by some of the
> performance I'm seeing. Specifically, the following bit takes well
> over twice as long to run as does WxAgg. Does this align with others'
> testing?

I haven't had a chance to look at the code yet, but I suspect he
hasn't implemented the path collection draw method. If it's not
implemented, we fall back on drawing each path separately, which is a
lot slower.  scatter ultimately triggers a call to
Renderer.draw_path_collection which has a default implementation and a
specialization in backend_agg.

JDH