topic Re: Create Interactive viewshed in ArcGIS Pro SDK Questions

Create Interactive viewshed

ModyBuchbinder — Mon, 24 Nov 2025 09:33:23 GMT

I would like to create with code something similar to this: https://pro.arcgis.com/en/pro-app/latest/help/mapping/exploratory-analysis/interactive-viewshed.htm

Using code I can read parameters from file and control the process beter.

I found the Viewshed class that looks like the class I need.

There are no examples I could find.

I could set the Camera properties and the Viewshed properties, but I cannot connect it to any MapView.

The MapView property is read-only. It is null when I run my code and no viewshed is created on screen.

There should be a way to define it but I cannot find it.

I connect my camera into the map (Camera camera = MapView.Active.Camera) then I just updated the properties (x,y, etc) but it did not help.

Thanks

Re: Create Interactive viewshed

GKmieliauskas — Mon, 24 Nov 2025 17:32:39 GMT

Hi,

MapView has method AddExploratoryAnalysisAsync. Viewshed is derived from ExploratoryAnalysis. Code below:

protected override async void OnClick() { var mapView = MapView.Active; if (mapView == null) return; var observerPointLayer = mapView.Map.GetLayersAsFlattenedList().OfType<FeatureLayer>().FirstOrDefault(layer => layer.Name.Equals("ObserverPoint")); if (observerPointLayer == null) return; ExploratoryAnalysis item0 = await QueuedTask.Run(() => { #region Get the observer point var observerPtCursor = observerPointLayer.Search(); MapPoint observerPoint = null; MapPoint targetPoint = null; MapPoint observerPointProjected = null; while (observerPtCursor.MoveNext()) { var observerPtFeature = observerPtCursor.Current as Feature; observerPoint = observerPtFeature.GetShape() as MapPoint; observerPointProjected = GeometryEngine.Instance. Project(observerPoint, mapView.Map.SpatialReference) as MapPoint; } #endregion Camera camera = new Camera(observerPointProjected.X, observerPointProjected.Y, 10.0, 0, 0); Viewshed viewshed = new Viewshed(camera, 0, 180, 100, 1000); return viewshed; }); await mapView.AddExploratoryAnalysisAsync(item0); }

Re: Create Interactive viewshed

ModyBuchbinder — Tue, 25 Nov 2025 09:30:06 GMT

It is working great - thanks.

There should be a sample or a snippet or at least a line in the help for Viewshed class or ExploratoryAnalysis class.

Thanks again

Mody