Intersect

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

Description

Calculates the geometric intersection of the overlaid polygon layers, i.e. layer A and layer B. Uses the free and open source software library Clipper created by Angus Johnson. You can enhance the performance for intersect operations sometimes drastically when you turn on the pre-processing option 'Clip' for layers with complex polygons covering large areas distinct to the other layer.

References

Clipper Homepage

Parameters

	Name	Type	Identifier	Description	Constraints
Input	Layer A	shapes, input	`A`	-	-
Input	Layer B	shapes, input	`B`	-	-
Output	Intersect	shapes, output	`RESULT`	-	-
Options	Clip	boolean	`A_CLIP`	-	Default: 0
	Clip	boolean	`B_CLIP`	-	Default: 0
	Split Parts	boolean	`SPLIT`	Set true if you want multipart polygons to become separate polygons.	Default: 1

Command Line


Usage: saga_cmd shapes_polygons 14 [-A ] [-A_CLIP ] [-B ] [-B_CLIP ] [-RESULT ] [-SPLIT ]
  -A:        Layer A
	shapes, input
  -A_CLIP:   Clip
	boolean
	Default: 0
  -B:        Layer B
	shapes, input
  -B_CLIP:   Clip
	boolean
	Default: 0
  -RESULT:   Intersect
	shapes, output
  -SPLIT:    Split Parts
	boolean
	Default: 1