geos.GEOSCoverageUnion ⇒ number ⏏
Computes the union of all the input geometries using an optimized algorithm for coverages (collections of polygons that do not overlap).
Kind: Exported member
Returns: number - A pointer to a new GEOS geometry representing the union, or NULL on exception.
See: https://libgeos.org/doxygen/classgeos_1_1operation_1_1geounion_1_1CoverageUnionOp.html
| Param | Type | Description |
|---|---|---|
| geom | number | A pointer to a GEOS geometry. |
geos.GEOSCoverageUnion_r ⇒ number ⏏
Computes the union of a collection of polygonal geometries that are correctly noded and do not overlap.
Kind: Exported member
Returns: number - The pointer to a GEOS geometry representing the union, or NULL on error.
See: https://libgeos.org/doxygen/classgeos_1_1operation_1_1geounion_1_1CascadedPolygonUnion.html
| Param | Type | Description |
|---|---|---|
| handle | number | A pointer to the GEOS context handle. |
| g | number | The pointer to a GEOS geometry collection. |