Tool Difference
Calculates the geometric difference of the overlayed polygon layers, i.e. layer A less layer B. Sometimes referred to as 'Erase' command.
Uses the free and open source software library Clipper created by Angus Johnson.
Clipper Homepage
Clipper at SourceForge
- Author: O.Conrad (c) 2003-17
- Menu: Shapes|Polygons|Overlay
Parameters
| Name | Type | Identifier | Description | Constraints | |
|---|---|---|---|---|---|
| Input | Layer A | Shapes (input) | A | - | - |
| Layer B | Shapes (input) | B | - | - | |
| Output | Difference | Shapes (output) | RESULT | - | - |
| Options | Split Parts | Boolean | SPLIT | Set true if you want multipart polygons to become separate polygons. | Default: 1 |
Command-line
Usage: saga_cmd shapes_polygons 15 [-A <str>] [-B <str>] [-RESULT <str>] [-SPLIT <str>] -A:<str> Layer A Shapes (input) -B:<str> Layer B Shapes (input) -RESULT:<str> Difference Shapes (output) -SPLIT:<str> Split Parts Boolean Default: 1