Class SpatialOverlaps
- Namespace
- YndigoBlue.Velocity.Functions
- Assembly
- YndigoBlue.Velocity.dll
Represents the ST_Overlaps spatial predicate function that tests if two geometries overlap.
public class SpatialOverlaps : Function, IElement, ICheckItem, IDefaultItem, IFilterItem- Inheritance
-
SpatialOverlaps
- Implements
Remarks
Warning
Spatial functions are not available in the Community Edition of Velocity. They require the Full Edition.
The ST_Overlaps function returns true if the two spatial objects have the same dimension, share some but not all points in common, and the intersection has the same dimension as the geometries themselves. According to the DE-9IM model, this means their interiors intersect, but neither geometry is completely within the other. Typically used for polygon-polygon or line-line comparisons. Useful for finding partially overlapping features like overlapping land parcels or service areas. OGC-compliant.
Return Type: Boolean (true/false).
| Relationship | ST_Overlaps Result |
|---|---|
| Partial overlap (same dimension) | TRUE |
| One contains the other | FALSE (use ST_Contains) |
| Disjoint (no intersection) | FALSE |
| Equal geometries | FALSE (use ST_Equals) |
Constructors
- SpatialOverlaps(Geometry, Column)
Initializes a new instance of ST_Overlaps with a geometry literal and column.
- SpatialOverlaps(Geometry, Function)
Initializes a new instance of ST_Overlaps with a Geometry literal and function result for function chaining.
- SpatialOverlaps(Column, Geometry)
Initializes a new instance of ST_Overlaps with a column and geometry literal.
- SpatialOverlaps(Column, Column)
Initializes a new instance of ST_Overlaps with two columns for spatial joins.
- SpatialOverlaps(Column, Function)
Initializes a new instance of ST_Overlaps with a column and function result for function chaining.
- SpatialOverlaps(Column, Geography)
Initializes a new instance of ST_Overlaps with a column and geography literal.
- SpatialOverlaps(Function, Geometry)
Initializes a new instance of ST_Overlaps with a function result and Geometry literal for function chaining.
- SpatialOverlaps(Function, Column)
Initializes a new instance of ST_Overlaps with a function result and column for function chaining.
- SpatialOverlaps(Function, Function)
Initializes a new instance of ST_Overlaps with two function results for function chaining.
- SpatialOverlaps(Function, Geography)
Initializes a new instance of ST_Overlaps with a function result and Geography literal for function chaining.
- SpatialOverlaps(Geography, Column)
Initializes a new instance of ST_Overlaps with a geography literal and column.
- SpatialOverlaps(Geography, Function)
Initializes a new instance of ST_Overlaps with a Geography literal and function result for function chaining.