| Name | Type | Identifier | Description | Constraints |
Input | Elevation | Grid (input) | ELEVATION | - | - |
Output | Visibility | Grid (output) | VISIBILITY | - | - |
Options | Height | Floating point | HEIGHT | Height of the light source above ground. | Default: 100.000000 |
Unit | Choice | METHOD | - | Available Choices: [0] Visibility [1] Shade [2] Distance [3] Size Default: 1 |
Multiple Observer | Boolean | MULTIPLE_OBS | Allow multiple observer positions. | Default: 0 |