ST_Simplify
Prev 8.8. Topology Processing Next

Name

ST_Simplify — Returns a "simplified" geometry version of the given TopoGeometry using the Douglas-Peucker algorithm.

Synopsis

geometry ST_Simplify(TopoGeometry tg, float8 tolerance);

Descrizione

Returns a "simplified" geometry version of the given TopoGeometry using the Douglas-Peucker algorithm on each component edge.

[Note]

The returned geometry may be non-simple or non-valid.

Splitting component edges may help retaining simplicity/validity.

Eseguito dal modulo GEOS.

Availability: 2.1.0

Si veda anche

Geometry ST_Simplify, ST_IsSimple, ST_IsValid, ST_ModEdgeSplit

Prev Up Next
AddFace Home RemoveUnusedPrimitives