Class SpatialRelate
- Namespace
- YndigoBlue.Velocity.Functions
- Assembly
- YndigoBlue.Velocity.dll
Represents the ST_Relate spatial function that tests if two geometries satisfy a DE-9IM pattern.
public class SpatialRelate : Function, IElement, ICheckItem, IDefaultItem, IFilterItem- Inheritance
-
SpatialRelate
- Implements
Remarks
The ST_Relate function tests whether two spatial objects satisfy a specific spatial relationship defined by a Dimensionally Extended 9-Intersection Model (DE-9IM) pattern matrix. The mask parameter is a 9-character string representing the intersection patterns between interior, boundary, and exterior of both geometries. Values can be: T (true/non-empty), F (false/empty), * (don't care), 0 (point), 1 (line), 2 (area). This is the most flexible spatial predicate, allowing custom relationship definitions beyond the standard predicates. OGC-compliant.
Constructors
- SpatialRelate(Geometry, Column, string)
Initializes a new instance of ST_Relate with a geometry literal, column, and DE-9IM mask.
- SpatialRelate(Column, Geometry, string)
Initializes a new instance of ST_Relate with a column, geometry literal, and DE-9IM mask.
- SpatialRelate(Column, Geography, string)
Initializes a new instance of ST_Relate with a column, geography literal, and DE-9IM mask.
- SpatialRelate(Geography, Column, string)
Initializes a new instance of ST_Relate with a geography literal, column, and DE-9IM mask.