Tool ANGMAP
This tool computes the acute angle raster between the topographic surface defined by slope and aspect rasters internally derived from input elevation raster, and a structural plane defined by diop direction- and dip grids. Optionally, the dip direction and dip of the cutting line linears between the two planes can be calculated
Reference: Günther, A. (2003). SLOPEMAP: programs for automated mapping of geometrical and kinematical properties of hard rock hill slopes. Computers & Geosciences, 29, 865 - 875.
- Author: A. Günther (c) 2013
- Menu: Terrain Analysis|Slope Stability
Parameters
| Name | Type | Identifier | Description | Constraints | |
|---|---|---|---|---|---|
| Input | Elevation | Grid (input) | DEM | A Digital Elvation Model (DEM) | - |
| Dip grid (degrees) (*) | Grid (optional input) | C | A grid representing the dip of the structure plane (in degrees) | - | |
| Dip direction grid (degrees) (*) | Grid (optional input) | D | A grid representing the dip direction of the structure plane (in degrees) | - | |
| Output | Angle | Grid (output) | E | Acute angle (degrees) grid | - |
| CL dipdir (*) | Grid (optional output) | F | Dip direction cutting line (degrees) | - | |
| CL dip (*) | Grid (optional output) | G | Dip cutting line (degrees) | - | |
| Options | Grid system | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Global structure dip (degrees) | Floating point | fB | Constant value if no raster set | Default: 45.000000 | |
| Global structure dip direction (degrees) | Floating point | fC | Constant value if no raster set | Default: 90.000000 | |
| (*) optional | |||||
Command-line
Usage: saga_cmd ta_slope_stability 5 [-DEM <str>] [-C <str>] [-D <str>] [-fB <double>] [-fC <double>] [-E <str>] [-F <str>] [-G <str>] -DEM:<str> Elevation Grid (input) -C:<str> Dip grid (degrees) Grid (optional input) -D:<str> Dip direction grid (degrees) Grid (optional input) -fB:<double> Global structure dip (degrees) Floating point Default: 45.000000 -fC:<double> Global structure dip direction (degrees) Floating point Default: 90.000000 -E:<str> Angle Grid (output) -F:<str> CL dipdir Grid (optional output) -G:<str> CL dip Grid (optional output)