Visibility Analysis
- Author: V.Wichmann (c) 2013
- Menu: Terrain Analysis | Lighting and Visibility
Description
This tool performs a visibility analysis using light source or observer points from a points layer.
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 | - | - |
Output | choice | METHOD | - | Available Choices: [0] Visibility [1] Shade [2] Distance [3] Size Default: 3 | |
Unit | choice | UNIT | - | Available Choices: [0] radians [1] degree Default: 1 | |
Cumulative | boolean | CUMULATIVE | If not set, output is the maximum size, or the cumulated sizes otherwise. | Default: 0 | |
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 number | HEIGHT_DEFAULT | default value if no attribute has been selected | Minimum: 0.000000 Default: 10.000000 |
Command Line
Usage: saga_cmd ta_lighting 6 [-ELEVATION] [-VISIBILITY ] [-METHOD ] [-UNIT ] [-CUMULATIVE ] [-NODATA ] [-POINTS ] [-HEIGHT ] [-HEIGHT_DEFAULT ] -ELEVATION: Elevation grid, input -VISIBILITY: Visibility grid, output -METHOD: Output choice Available Choices: [0] Visibility [1] Shade [2] Distance [3] Size Default: 3 -UNIT: Unit choice Available Choices: [0] radians [1] degree Default: 1 -CUMULATIVE: Cumulative boolean Default: 0 -NODATA: Ignore No-Data boolean Default: 0 -POINTS: Points shapes, input -HEIGHT: Height table field -HEIGHT_DEFAULT: Default floating point number Minimum: 0.000000 Default: 10.000000