Module Burn Stream Network into DEM
Burns a stream network into a Digital Elevation Model (DEM). Stream cells have to be coded with valid data values, all other cells should be set to no data value. First two methods decrease . The third method ensures a steady downstream gradient. An elevation decrease is only applied, if a downstream cell is equally high or higher. You should provide a grid with flow directions for determination of downstream cells. The 'Sink Drainage Route Detection' module offers such flow directions.
- Author: O.Conrad (c) 2011
- Specification: grid
- Menu: Terrain Analysis|Preprocessing
Parameters
| Name | Type | Identifier | Description | Constraints |
Input | DEM | Grid (input) | DEM | - | - |
Streams | Grid (input) | STREAM | - | - |
Flow Direction | Grid (input) | FLOWDIR | - | - |
Output | Processed DEM (*) | Grid (optional output) | BURN | - | - |
Options | Method | Choice | METHOD | - | Available Choices: [0] simply decrease cell's value by epsilon [1] lower cell's value to neighbours minimum value minus epsilon [2] trace stream network downstream Default: 0 |
Epsilon | Floating point | EPSILON | - | Minimum: 0.000000 Default: 1.000000 |
(*) optional |
Command-line
Usage: saga_cmd ta_preprocessor 6 -DEM <str> [-BURN <str>] -STREAM <str> -FLOWDIR <str> [-METHOD <str>] [-EPSILON <str>]
-DEM:<str> DEM
Grid (input)
-BURN:<str> Processed DEM
Grid (optional output)
-STREAM:<str> Streams
Grid (input)
-FLOWDIR:<str> Flow Direction
Grid (input)
-METHOD:<str> Method
Choice
Available Choices:
[0] simply decrease cell's value by epsilon
[1] lower cell's value to neighbours minimum value minus epsilon
[2] trace stream network downstream
Default: 0
-EPSILON:<str> Epsilon
Floating point
Minimum: 0.000000
Default: 1.000000