Modifying Spatial Objects
In this chapter we look at methods that modify, combine, alter, existing objects.
| Method | Description | Supported Datatypes | |
|---|---|---|---|
| MakeValid() | Modifies a geometry to ensure it is valid | geometry | |
| STUnion() | Defines a multi-element instance from the union of two instances | geometry | geography |
| STIntersection() | Defines a Polygon from the intersection of two instances | geometry | geography |
| STDifference() | Defines an instance from the points representing the difference between two geometries | geometry | geography |
| STSymDifference() | Defines an instance from the points representing the difference between two geometries | geometry | geography |
| Reduce() | Defines a simplified instance of a Polygon or LineString | geometry | geography |
| STBuffer() | Defines a Polygon or MultiPolygon representing the buffer zone around an object | geometry | geography |
| BufferWithTolerance() | Defines a Polygon or MultiPolygon representing the buffer zone around an object with a given tolerance | geometry | geography |
| STConvexHull() | Creates a Polygon representing the convex hull of a geometry | geometry | |
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