Topology

Topological vs Non-Topological Simplification/Generalization of Aggregated Area Geometies in Oracle

27 Jul 2020 By Simon Greener

Oracle has a function, sdo_util.simplify that can simplify (generalize) the vertices describing a geometric object (that is, reduce the number in a way that maintains basic shape). However, that function only operates on a single geometry at a time. Using it on polygonal data that completely covers an area (planar enforced) can and will causeRead More

Replacement for SDO_GEOM.RELATE – ST_Relate based on JTS

24 Jul 2020 By Simon Greener

Even old dogs like me forget things and have to learn them again. You know, I am sure that I knew that SDO_GEOM.RELATE was a Spatial licensed feature and not available in Locator, but I clean forgot until a situation with a customer required me to look at an alternative. The reason is because thisRead More