| Tool Name | Union |
| Tool ID | 17 |
| Library ID | shapes_polygons |
| Version | 1.0 |
| Author(s) | O.Conrad (c) 2003-25 |
Please cite SAGA whenever you use it for your publications:
doi:10.5194/gmd-8-1991-2015
Description
Calculates the geometric union of the overlaid polygon layers, i.e. the intersection plus the symmetrical difference of layers A and B.
Uses the free and open source software library Clipper created by Angus Johnson.
References
Clipper Homepage
Parameters
| Name | Type | Identifier | Description | Constraints |
|---|
| Input |
|---|
| Layer A | shapes, input | A | | |
| Layer B | shapes, input | B | | |
| Output |
|---|
| Union | shapes, output | RESULT | | |
| Options |
|---|
| Split Parts | boolean | SPLIT | Set true if you want multipart polygons to become separate polygons. | Default: 1 |