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