SAGA-GIS Module Library Documentation (v2.1.3)

Module Polygon Shape Indices

Various indices describing the shape of polygons. Based on area, perimeter, maximum distance between the vertices of a polygon.

- Interior Edge Ratio (Perimeter / Area)
- Shape Index (Perimeter / (2 * SquareRoot(PI * Area))

References:
Lang, S., Blaschke, T. (2007): Landschaftsanalyse mit GIS.

Forman, R.T.T., Godron, M. (1986): Landscape Ecology. Cambridge.

Parameters

 NameTypeIdentifierDescriptionConstraints
InputShapesShapes (input)SHAPES--
OutputShape Index (*)Shapes (optional output)INDEX--
(*) optional

Command-line

Usage: saga_cmd shapes_polygons 7 -SHAPES <str> [-INDEX <str>]
  -SHAPES:<str>	Shapes
	Shapes (input)
  -INDEX:<str> 	Shape Index
	Shapes (optional output)