Terrain surface convexity as proposed by Iwahashi & Pike (2007) for subsequent terrain classification.
| Name | Type | Identifier | Description | Constraints |
Input | Elevation | Grid, input | DEM | - | - |
Output | Convexity | Grid, output | CONVEXITY | - | - |
Options | Grid System | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
Laplacian Filter Kernel | Choice | KERNEL | - | Available Choices: [0] conventional four-neighbourhood [1] conventional eight-neihbourhood [2] eight-neihbourhood (distance based weighting) Default: 0 |
Type | Choice | TYPE | - | Available Choices: [0] convexity [1] concavity Default: 0 |
Flat Area Threshold | Floating point | EPSILON | - | Minimum: 0.000000 Default: 0.000000 |
Scale (Cells) | Integer | SCALE | - | Minimum: 1 Default: 10 |
Method | Choice | METHOD | - | Available Choices: [0] counting cells [1] resampling Default: 1 |
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 |