Fragmentation Classes from Density and Connectivity
- Author: O.Conrad (c) 2008
- Menu: Grid | Analysis | Fragmentation Analysis
Description
Fragmentation classes:
(1) interior, if Density = 1.0
(2) undetermined, if Density > 0.6 and Density = Connectivity
(3) perforated, if Density > 0.6 and Density - Connectivity > 0
(4) edge, if Density > 0.6 and Density - Connectivity < 0
(5) transitional, if 0.4 < Density < 0.6
(6) patch, if Density < 0.4
References
Parameters
| Name | Type | Identifier | Description | Constraints |
Input | Density [Percent] | grid, input | DENSITY | Density Index (Pf). | - |
Connectivity [Percent] | grid, input | CONNECTIVITY | Connectivity Index (Pff). | - |
Output | Fragmentation | grid, output | FRAGMENTATION | Fragmentation Index | - |
Options | Grid System | grid system | PARAMETERS_GRID_SYSTEM | - | - |
Add Border | boolean | BORDER | - | Default: 0 |
Connectivity Weighting | floating point number | WEIGHT | - | Minimum: 0.000000
Default: 1.100000 |
Minimum Density [Percent] | floating point number | DENSITY_MIN | - | Minimum: 0.000000
Maximum: 100.000000
Default: 10.000000 |
Minimum Density for Interior Forest [Percent] | floating point number | DENSITY_INT | if less than 100, it is distinguished between interior and core forest | Minimum: 0.000000
Maximum: 100.000000
Default: 99.000000 |
Command Line
Usage: saga_cmd grid_analysis 17 [-DENSITY ] [-CONNECTIVITY ] [-FRAGMENTATION ] [-BORDER ] [-WEIGHT ] [-DENSITY_MIN ] [-DENSITY_INT ]
-DENSITY: Density [Percent]
grid, input
-CONNECTIVITY: Connectivity [Percent]
grid, input
-FRAGMENTATION: Fragmentation
grid, output
-BORDER: Add Border
boolean
Default: 0
-WEIGHT: Connectivity Weighting
floating point number
Minimum: 0.000000
Default: 1.100000
-DENSITY_MIN: Minimum Density [Percent]
floating point number
Minimum: 0.000000
Maximum: 100.000000
Default: 10.000000
-DENSITY_INT: Minimum Density for Interior Forest [Percent]
floating point number
Minimum: 0.000000
Maximum: 100.000000
Default: 99.000000