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 number | EPSILON | - | Minimum: 0.000000
Default: 0.000000 |
Scale (Cells) | integer number | 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: 3 |
Power | floating point number | DW_IDW_POWER | - | Minimum: 0.000000
Default: 2.000000 |
Bandwidth | floating point number | DW_BANDWIDTH | Bandwidth for exponential and Gaussian weighting | Minimum: 0.000000
Default: 0.700000 |