SAGA-GIS Tool Library Documentation (v9.1.2)

Tool Convex Hull

Implementation of 'Andrew's Monotone Chain Algorithm' for convex hull construction.


References


Parameters

 NameTypeIdentifierDescriptionConstraints
InputPointsShapes, inputSHAPES--
OutputConvex HullShapes, outputHULLS--
Minimum Bounding Box (*)Shapes, output, optionalBOXES--
OptionsHull ConstructionChoicePOLYPOINTSThis option does not apply to simple point layers.Available Choices:
[0] one hull for all shapes
[1] one hull per shape
[2] one hull per shape part
Default: 1
Polygon ConvexityBooleanPOLYGONCVXDescribes a polygon's compactness as ratio of its area to its hull's area.Default: 0
(*) optional

Command-line

Usage: saga_cmd shapes_points 12 [-SHAPES <str>] [-HULLS <str>] [-BOXES <str>] [-POLYPOINTS <str>] [-POLYGONCVX <str>]
  -SHAPES:<str>    	Points
	Shapes, input
  -HULLS:<str>     	Convex Hull
	Shapes, output
  -BOXES:<str>     	Minimum Bounding Box
	Shapes, output, optional
  -POLYPOINTS:<str>	Hull Construction
	Choice
	Available Choices:
	[0] one hull for all shapes
	[1] one hull per shape
	[2] one hull per shape part
	Default: 1
  -POLYGONCVX:<str>	Polygon Convexity
	Boolean
	Default: 0