[geos-devel] Progress on #837 - TopologyException in UnaryUnion

Darafei "Komяpa" Praliaskouski me at komzpa.net
Tue Apr 16 05:26:58 PDT 2019


> Ultimately I think the ideal approach is going to be abandoning
> CascadedUnion and switch to a full union algorithm (which will essentially
> be the same as running buffer(0).  This should have very good performance.

 We're using PostGIS's ST_Union to dissolve a clipped TIN into a polygon.
Current ST_Union implementation handles this measurably faster than
ST_Buffer(ST_Collect(geom),0). Please keep this case in mind.

Darafei Praliaskouski
Support me: http://patreon.com/komzpa
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