Class SpatialUnion
- Namespace
- YndigoBlue.Velocity.Functions
- Assembly
- YndigoBlue.Velocity.dll
Represents the ST_Union spatial analysis function that computes the spatial union of two geometries.
public class SpatialUnion : Function, IElement, ICheckItem, IDefaultItem, IFilterItem- Inheritance
-
SpatialUnion
- Implements
Remarks
The ST_Union function returns a geometry representing the point set union of two spatial objects (the set of points that are in either geometry). The result combines both geometries, merging overlapping areas and dissolving internal boundaries. Useful for combining adjacent parcels, merging service areas, or creating aggregate geographic regions. The output geometry type depends on the inputs and their spatial relationship. OGC-compliant.
Constructors
- SpatialUnion(Geometry, Column)
Initializes a new instance of ST_Union with a geometry literal and column.
- SpatialUnion(Column, Geometry)
Initializes a new instance of ST_Union with a column and geometry literal.
- SpatialUnion(Column, Geography)
Initializes a new instance of ST_Union with a column and geography literal.
- SpatialUnion(Geography, Column)
Initializes a new instance of ST_Union with a geography literal and column.