Module Surface Specific Points
References:
Peucker, T.K. and Douglas, D.H., 1975:
'Detection of surface-specific points by local parallel processing of discrete terrain elevation data',
Computer Graphics and Image Processing, 4, 375-387
- Author: (c) 2001 by O.Conrad
- Specification: grid
- Menu: Terrain Analysis|Terrain Classification
Parameters
| | Name | Type | Identifier | Description | Constraints |
|---|
| Input | Elevation | Grid (input) | ELEVATION | - | - |
| Output | Result | Grid (output) | RESULT | - | - |
| Options | Method | Choice | METHOD | Algorithm for the detection of Surface Specific Points | Available Choices:
[0] Mark Highest Neighbour
[1] Opposite Neighbours
[2] Flow Direction
[3] Flow Direction (up and down)
[4] Peucker & Douglas
Default: 1 |
| Threshold | Floating point | THRESHOLD | Threshold for Peucker & Douglas Algorithm | Default: 2.000000 |
Command-line
Usage: saga_cmd ta_morphometry 3 -ELEVATION <str> [-RESULT <str>] [-METHOD <str>] [-THRESHOLD <str>]
-ELEVATION:<str> Elevation
Grid (input)
-RESULT:<str> Result
Grid (output)
-METHOD:<str> Method
Choice
Available Choices:
[0] Mark Highest Neighbour
[1] Opposite Neighbours
[2] Flow Direction
[3] Flow Direction (up and down)
[4] Peucker & Douglas
Default: 1
-THRESHOLD:<str> Threshold
Floating point
Default: 2.000000