Using a Tin Model, a Hillshade has been done to assess the visible land cover blocked by high elevated grounds, such as the Niagara Escarpment or highway overpasses.
The above layout displays the (Viewshed) area of sight from the respective vantage points. Seen in the viewshed map are pink areas representing not visible land and grey-green areas representing visible lands. Elevation is the factor the affects visibility.
This relationship is also seen in the line of sight viewport- where red represents land not visible and green represents visible lands. In this case, higher elevated grounds will be visible from the particular vantage point the line of sight tool stems from.
Seen below is the 3D visualized layout of the above map. The elevated grounds can be seen in ArcScene 10 as the Hillshade and all other features have been draped over the Tin Model.
Product of ArcScene Drape Over: Hillshade atop Tin created in ArcMap 10
Urban Application Example: Street lighting where lighting can be buffered for distances, but a line of sight will need to be used to assess the grounds blocked by high elevated areas.
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