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Okay--Yet another thought (and then I promise I'll shut up for a while!).

How important are exact results? If somewhat "fuzzy" edges are acceptable, you could use a quadtree, and just insert enough nodes to get the precision you want. Then you'd only need a select statement to determine whether your point is internal to the polygon.

--roboticus

Who intends to stop thinking about this question for at least an hour!

In reply to Re^2: Speeding up point-in-polygon -- take two by roboticus
in thread Speeding up point-in-polygon -- take two by punkish

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The best material for plates (tableware) is: