Tool Rao's Q Diversity Index
Grid based analysis of diversity with Rao's Q Index. Rao's Q diversity index is calculated locally for each grid cell using the specified kernel (aka 'moving window'). It is assumed that the grid cell values represent quantities.
References
- Rocchini, D., Marcantonio, M., Ricotta, C. (2017): Measuring Rao's Q diversity index from remote sensing: An open source solution. Ecological Indicators, Volume 72, p. 234-238. doi:10.1016/j.ecolind.2016.07.039..
- Author: O.Conrad (c) 2019
- Menu: Grid|Analysis|Diversity
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Values | Grid list (input) | VALUES | - | - |
| Output | Rao's Q | Grid (output) | INDEX | - | - |
| Options | Grid System | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Normalize | Boolean | NORMALIZE | - | Default: 0 |
| Distance | Choice | DISTANCE | - | Available Choices:
[0] Euclidian
[1] Manhatten
[2] Canberra
[3] Minkowski
Default: 0 |
| Lambda | Floating point | LAMBDA | Lambda for Minkowski distance calculation. | Minimum: 0.000100
Default: 1.000000 |
| Kernel Type | Choice | KERNEL_TYPE | The kernel's shape. | Available Choices:
[0] Square
[1] Circle
Default: 1 |
| Radius | Integer | KERNEL_RADIUS | cells | Minimum: 0
Default: 2 |
Command-line
Usage: saga_cmd grid_analysis 25 [-VALUES <str>] [-NORMALIZE <str>] [-INDEX <str>] [-DISTANCE <str>] [-LAMBDA <double>] [-KERNEL_TYPE <str>] [-KERNEL_RADIUS <num>]
-VALUES:<str> Values
Grid list (input)
-NORMALIZE:<str> Normalize
Boolean
Default: 0
-INDEX:<str> Rao's Q
Grid (output)
-DISTANCE:<str> Distance
Choice
Available Choices:
[0] Euclidian
[1] Manhatten
[2] Canberra
[3] Minkowski
Default: 0
-LAMBDA:<double> Lambda
Floating point
Minimum: 0.000100
Default: 1.000000
-KERNEL_TYPE:<str> Kernel Type
Choice
Available Choices:
[0] Square
[1] Circle
Default: 1
-KERNEL_RADIUS:<num> Radius
Integer
Minimum: 0
Default: 2