Update

Author: O.Conrad (c) 2003-25
Menu: Shapes | Polygons | Overlay

Description

Updates features of layer A with the features of layer B, i.e. all features of layer B will be supplemented with the difference of layer A less layer B plus. It is assumed, that both input layers share the same attribute structure. 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`	-	-
Input	Layer B	shapes, input	`B`	-	-
Output	Update	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 18 [-A ] [-B ] [-RESULT ] [-SPLIT ]
  -A:        Layer A
	shapes, input
  -B:        Layer B
	shapes, input
  -RESULT:   Update
	shapes, output
  -SPLIT:    Split Parts
	boolean
	Default: 1