Rao's Q Diversity Index
- Author: O.Conrad (c) 2019
- 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] Euclidian [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] Euclidian [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