If you are asking: what parts of the ground can be seen, then you are thinking of a two-dimensional viewshed surface that covers part of the ground surface.

If you are asking: what parts of the air can be seen, then you are thinking of a three-dimensional viewshed volume.

The ShadowOperator treats the sun as an observer, using the View.SunPosition, and produces rasters that are analogous to the default output from a LineOfSightOperator. So you can find out what parts of the ground that are sunlit, and how high the shadow volume is above ground.

The VisibilityIndexOperator can be used to solve the problem of observer siting, where you want to find a position for a single observer that maximizes the viewshed surface area.

The TargetLineOfSightOperator is useful when you know both observer positions and target positions. Instead of calculating a full viewshed, the operator will output copies of the target features, with additional attributes that tell which and how many observers that can see them. The operator can also generate line features from observers to targets.

The AirspaceCoverageOperator is similar to a LineOfSightOperator, but is intended for the use case where you have many observers with overlapping viewsheds. The AirspaceCoverageOperator computes a merged viewshed representing where the combined observer coverage is sufficient, according to some configurable conditions.

If you are asking: what parts of the ground can be seen, then you are thinking of a two-dimensional viewshed surface that covers part of the ground surface.

If you are asking: what parts of the air can be seen, then you are thinking of a three-dimensional viewshed volume.

The ShadowOperator treats the sun as an observer, using the View::sunPosition, and produces rasters that are analogous to the default output from a LineOfSightOperator. So you can find out what parts of the ground that are sunlit, and how high the shadow volume is above ground.

The VisibilityIndexOperator can be used to solve the problem of observer siting, where you want to find a position for a single observer that maximizes the viewshed surface area.

The TargetLineOfSightOperator is useful when you know both observer positions and target positions. Instead of calculating a full viewshed, the operator will output copies of the target features, with additional attributes that tell which and how many observers that can see them. The operator can also generate line features from observers to targets.

The AirspaceCoverageOperator is similar to a LineOfSightOperator, but is intended for the use case where you have many observers with overlapping viewsheds. The AirspaceCoverageOperator computes a merged viewshed representing where the combined observer coverage is sufficient, according to some configurable conditions.

If you are asking: what parts of the ground can be seen, then you are thinking of a two-dimensional viewshed surface that covers part of the ground surface.

If you are asking: what parts of the air can be seen, then you are thinking of a three-dimensional viewshed volume.

The ShadowOperator treats the sun as an observer, using the View.sunPosition, and produces rasters that are analogous to the default output from a LineOfSightOperator. So you can find out what parts of the ground that are sunlit, and how high the shadow volume is above ground.

The VisibilityIndexOperator can be used to solve the problem of observer siting, where you want to find a position for a single observer that maximizes the viewshed surface area.

The TargetLineOfSightOperator is useful when you know both observer positions and target positions. Instead of calculating a full viewshed, the operator will output copies of the target features, with additional attributes that tell which and how many observers that can see them. The operator can also generate line features from observers to targets.

The AirspaceCoverageOperator is similar to a LineOfSightOperator, but is intended for the use case where you have many observers with overlapping viewsheds. The AirspaceCoverageOperator computes a merged viewshed representing where the combined observer coverage is sufficient, according to some configurable conditions.

If you are asking: what parts of the ground can be seen, then you are thinking of a two-dimensional viewshed surface that covers part of the ground surface.

If you are asking: what parts of the air can be seen, then you are thinking of a three-dimensional viewshed volume.

The ShadowOperator treats the sun as an observer, using the View.sunPosition, and produces rasters that are analogous to the default output from a LineOfSightOperator. So you can find out what parts of the ground that are sunlit, and how high the shadow volume is above ground.

The VisibilityIndexOperator can be used to solve the problem of observer siting, where you want to find a position for a single observer that maximizes the viewshed surface area.

The TargetLineOfSightOperator is useful when you know both observer positions and target positions. Instead of calculating a full viewshed, the operator will output copies of the target features, with additional attributes that tell which and how many observers that can see them. The operator can also generate line features from observers to targets.

The AirspaceCoverageOperator is similar to a LineOfSightOperator, but is intended for the use case where you have many observers with overlapping viewsheds. The AirspaceCoverageOperator computes a merged viewshed representing where the combined observer coverage is sufficient, according to some configurable conditions.