Tool Visibility Analysis
This tool performs a visibility analysis using light source or observer points from a points layer.
- Author: V.Wichmann (c) 2013
- Menu: Terrain Analysis|Lighting
Parameters
| Name | Type | Identifier | Description | Constraints | |
|---|---|---|---|---|---|
| Input | Elevation | Grid, input | ELEVATION | - | - |
| Points | Shapes, input | POINTS | Observer points. | - | |
| Output | Visibility | Grid, output | VISIBILITY | - | - |
| Options | Grid System | Grid system | PARAMETERS_GRID_SYSTEM | - | - |
| Unit | Choice | METHOD | - | Available Choices: [0] Visibility [1] Shade [2] Distance [3] Size Default: 1 | |
| Ignore No-Data | Boolean | NODATA | Ignore elevations that have been marked as no-data. | Default: 0 | |
| Height (*) | Table field | HEIGHT | Height of the light source or observer above ground. | - | |
| Default | Floating point | HEIGHT_DEFAULT | default value if no attribute has been selected | Minimum: 0.000000 Default: 10.000000 | |
| (*) optional | |||||
Command-line
Usage: saga_cmd ta_lighting 6 [-ELEVATION <str>] [-VISIBILITY <str>] [-METHOD <str>] [-NODATA <str>] [-POINTS <str>] [-HEIGHT <str>] [-HEIGHT_DEFAULT <double>] -ELEVATION:<str> Elevation Grid, input -VISIBILITY:<str> Visibility Grid, output -METHOD:<str> Unit Choice Available Choices: [0] Visibility [1] Shade [2] Distance [3] Size Default: 1 -NODATA:<str> Ignore No-Data Boolean Default: 0 -POINTS:<str> Points Shapes, input -HEIGHT:<str> Height Table field -HEIGHT_DEFAULT:<double> Default Floating point Minimum: 0.000000 Default: 10.000000