Rao's Q Diversity Index
| Author(s) | O.Conrad (c) 2019 |
| Library ID | grid_analysis |
| Tool ID | 25 |
| Version | 1.0 |
| Menu | Grid | Analysis | Diversity |
Description
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.
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] Euclidean
[1] Manhatten
[2] Canberra
[3] Minkowski
Default: 0 |
| Lambda | floating point number | 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 number | KERNEL_RADIUS | cells | Minimum: 0
Default: 2 |
Command Line
Usage: saga_cmd grid_analysis 25 [-VALUES ] [-NORMALIZE ] [-INDEX ] [-DISTANCE ] [-LAMBDA ] [-KERNEL_TYPE ] [-KERNEL_RADIUS ]
-VALUES: Values
grid list, input
-NORMALIZE: Normalize
boolean
Default: 0
-INDEX: Rao's Q
grid, output
-DISTANCE:
Distance
choice
Available Choices:
[0] Euclidean
[1] Manhatten
[2] Canberra
[3] Minkowski
Default: 0
-LAMBDA: Lambda
floating point number
Minimum: 0.000100
Default: 1.000000
-KERNEL_TYPE: Kernel Type
choice
Available Choices:
[0] Square
[1] Circle
Default: 1
-KERNEL_RADIUS: Radius
integer number
Minimum: 0
Default: 2