On Mar 5, 2012, at 9:09 PM, Simon Greener wrote: > Jaspa, which could be used alongside PostGIS, has an ST_DelaunayTriangles() function but no Voronoi. Interesting. I have never heard of Jaspa. What is that? I wouldn't mind giving ST_DelaunayTriangles() a whirl in the meantime. Many thanks, -- Puneet Kishor