Tool Diversity of Categories
Grid based analysis of diversity. It is assumed that the input grid provides a classification (i.e. not a contiuous field). For each cell it counts the number of different categories (classes) as well as the connectivity within the chosen search window.
- Author: O.Conrad (c) 2015
- Menu: Grid|Analysis|Diversity
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Categories | Grid, input | CATEGORIES | - | - |
| Output | Number of Categories | Grid, output | COUNT | number of different categories (unique values) within search area | - |
| Diversity | Grid, output | DIVERSITY | distance weighted average of the number of different categories for distance classes | - |
| Connectivity | Grid, output | CONNECTIVITY | - | - |
| Averaged Connectivity | Grid, output | CONNECTEDAVG | average size of the area covered by each category that occurs within search area | - |
| Options | Grid System | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Connectivity Neighbourhood | Choice | NB_CASE | - | Available Choices:
[0] Rook's case
[1] Queen's case
Default: 1 |
| Normalize | Choice | NORMALIZE | - | Available Choices:
[0] no
[1] by number of cells
[2] by area size
Default: 0 |
| 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 |
| Weighting Function | Choice | DW_WEIGHTING | - | Available Choices:
[0] no distance weighting
[1] inverse distance to a power
[2] exponential
[3] gaussian
Default: 0 |
| Power | Floating point | DW_IDW_POWER | - | Minimum: 0.000000
Default: 2.000000 |
| Bandwidth | Floating point | DW_BANDWIDTH | Bandwidth for exponential and Gaussian weighting | Minimum: 0.000000
Default: 1.000000 |
Command-line
Usage: saga_cmd grid_analysis 21 [-CATEGORIES <str>] [-COUNT <str>] [-DIVERSITY <str>] [-CONNECTIVITY <str>] [-CONNECTEDAVG <str>] [-NB_CASE <str>] [-NORMALIZE <str>] [-KERNEL_TYPE <str>] [-KERNEL_RADIUS <num>] [-DW_WEIGHTING <str>] [-DW_IDW_POWER <double>] [-DW_BANDWIDTH <double>]
-CATEGORIES:<str> Categories
Grid, input
-COUNT:<str> Number of Categories
Grid, output
-DIVERSITY:<str> Diversity
Grid, output
-CONNECTIVITY:<str> Connectivity
Grid, output
-CONNECTEDAVG:<str> Averaged Connectivity
Grid, output
-NB_CASE:<str> Connectivity Neighbourhood
Choice
Available Choices:
[0] Rook's case
[1] Queen's case
Default: 1
-NORMALIZE:<str> Normalize
Choice
Available Choices:
[0] no
[1] by number of cells
[2] by area size
Default: 0
-KERNEL_TYPE:<str> Kernel Type
Choice
Available Choices:
[0] Square
[1] Circle
Default: 1
-KERNEL_RADIUS:<num> Radius
Integer
Minimum: 0
Default: 2
-DW_WEIGHTING:<str> Weighting Function
Choice
Available Choices:
[0] no distance weighting
[1] inverse distance to a power
[2] exponential
[3] gaussian
Default: 0
-DW_IDW_POWER:<double> Power
Floating point
Minimum: 0.000000
Default: 2.000000
-DW_BANDWIDTH:<double> Bandwidth
Floating point
Minimum: 0.000000
Default: 1.000000