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Viewshed sample

Documentation | Samples | Viewshed


How to use the Viewshed functionality.


A viewshed is the area of visibility of an observed object(s), or conversely, the area that can be seen from an observer location(s). The sample demonstrates:

  • Viewshed Binary
    shows the area visible from at least one observer location (does not indicate by how many observers each point can be seen),
  • Viewshed FrequencyColorized
    shows the visible area colorized according to the number of observers which can see each point,
  • Above-Ground-Level
    indicates the minimum height that must be added to a nonvisible point to make it visible by at least one observer.

This sample illustrates use of:

Name Description
TGIS_ViewshedViewshed, above-ground-level (AGL), and Fresnel zone clearance generator.


This sample is available on following platforms (click to see source code):

2020/05/26 09:38

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