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.
- Author: (c) 2008 by O.Conrad
- Specification: grid
- Menu: Shapes|Polygons
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Shapes | Shapes (input) | SHAPES | - | - |
| Output | Shape 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)