On Tue, Jun 19, 2012 at 12:06 PM, Alexander Crosby
<acro...@asascience.com>wrote:
> The code below is a stripped down version of the way i am implementing a
> clip operation, but it is slow and memory inefficient. Is there a way to
> do this without looping or just faster, perhaps with a
> PolygonCollection?
>
> I have code that finds the perimeter path of a triangulation like this,
> but it turns out that my topology is not well formed enough for it to
> work. Is there a hidden matplotlib method to combine or dissolve
> Polygons/Patches?
>
> Thanks,
> Alex
>
>
I have found the Shapely library to be 2-4 times faster in performing
topology related operations out-of-the-box than my own hand-optimized
utilizations of matplotlib internals (of course, combining my optimizations
with shapely yielded insanely fast performance, but at a loss of
generality). It would require re-working of your existing code, but if
performance is the bottle-neck, shapely is the way to go.
Cheers!
Ben Root
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