geos.GEOSDifference ⇒ GEOSGeometry ⏏
Returns the difference of two geometries A and B: the set of points that fall within A but not within B.
Kind: global property of geos
Returns: GEOSGeometry - A newly allocated geometry of the difference. NULL on exception. Caller is responsible for freeing with GEOSGeom_destroy().
| Param | Type | Description |
|---|---|---|
| ga | GEOSGeometry | the base geometry |
| gb | GEOSGeometry | the geometry to subtract from it |
geos.GEOSDifferencePrec ⇒ GEOSGeometry ⏏
Returns the difference of two geometries A and B: the set of points that fall within A but not within B. All the vertices of the output geometry must fall on the grid defined by the gridSize, and the output will be a valid geometry.
Kind: global property of geos
Returns: GEOSGeometry - A newly allocated geometry of the difference. NULL on exception. Caller is responsible for freeing with GEOSGeom_destroy().
| Param | Type | Description |
|---|---|---|
| ga | GEOSGeometry | one of the geometries |
| gb | GEOSGeometry | the other geometry |
| gridSize | number | the cell size of the precision grid |
geos.GEOSDifferencePrec_r ⇒ GEOSGeometry ⏏
Returns the difference of two geometries A and B: the set of points that fall within A but not within B. All the vertices of the output geometry must fall on the grid defined by the gridSize, and the output will be a valid geometry.
Kind: global property of geos
Returns: GEOSGeometry - A newly allocated geometry of the difference. NULL on exception. Caller is responsible for freeing with GEOSGeom_destroy().
| Param | Type | Description |
|---|---|---|
| handle | GEOSContextHandle_t | - |
| g1 | GEOSGeometry | one of the geometries |
| g2 | GEOSGeometry | the other geometry |
| gridSize | number | the cell size of the precision grid |
geos.GEOSDifference_r ⇒ GEOSGeometry ⏏
Returns the difference of two geometries A and B: the set of points that fall within A but not within B.
Kind: global property of geos
Returns: GEOSGeometry - A newly allocated geometry of the difference. NULL on exception. Caller is responsible for freeing with GEOSGeom_destroy().
| Param | Type | Description |
|---|---|---|
| handle | GEOSContextHandle_t | - |
| g1 | GEOSGeometry | the base geometry |
| g2 | GEOSGeometry | the geometry to subtract from it |