Perform an exploratory viewshed analysis from a defined vantage point.
Use case
An exploratory viewshed analysis is a type of visual analysis you can perform at the current rendered resolution of a scene. The exploratory viewshed shows what can be seen from a given location. The output is an overlay with two different colors - one representing the visible areas (green) and the other representing the obstructed areas (red).
Note: This analysis is a form of “exploratory analysis”, which means the results are calculated on the current scale of the data, and the results are generated very quickly but not persisted. If persisted analysis performed at the full resolution of the data is required, consider using a ViewshedFunction to perform a viewshed calculation instead.
How to use the sample
Tap on the map to add an observer location. Use the sliders to change the properties (heading, pitch, etc.), of the exploratory viewshed and see them updated in real time. To move the exploratory viewshed, tap anywhere on the screen.
How it works
- Create an
ExploratoryLocationViewshedpassing in the observer location, heading, pitch, horizontal/vertical angles, and min/max distances. - Set the property values on the exploratory viewshed instance for location, direction, range, and visibility properties.
Relevant API
- AnalysisOverlay
- ArcGISSceneLayer
- ArcGISTiledElevationSource
- ExploratoryLocationViewshed
- ExploratoryViewshed
About the data
The scene shows a buildings layer in Brest, France hosted on ArcGIS Online.
Tags
3D, exploratory viewshed, frustum, scene, visibility analysis