VisibilityIndexOperator.TargetInput Property
Gets or sets an operator that gives a target area represented by one or more polygon features.
Syntax
public Operator TargetInput { get; set; }Property Value
Default: null
An operator that gives a target area represented by one or more polygon features.
Remarks
The TargetInput operator can be null, which means that the visibility index for each observer position represents the visible percentage of the theoretically maximal viewshed as defined by MaxDistance etc.
If the TargetInput operator is not null, then it shall give one or more polygon features whose union defines a target area. The visibility index for each observer position then represents the visible percentage of the target area. Note that a target polygon that is outside the view area or farther than MaxDistance from each observer polygon will still affect the visibility indices, if nothing else because it contributes to the total target union area that defines what 100 percent coverage means. Therefore, the VisibilityIndexOperator has to request polygons anywhere in the world from TargetInput, and it is wise to ensure that the dataset of target polygons does not contain too many features.
Platforms
Windows, Linux, Android