topic Re: Nearest Feature in ArcGIS Pro SDK Questions

Nearest Feature

sonj — Fri, 16 Aug 2024 11:13:22 GMT

In arcobjects we used to find the nearestfeature using IIndexQuery. Is there similar functionality in Pro SDK? If not what is the best process to find the "NearestFeature"

Re: Nearest Feature

Aashis — Fri, 16 Aug 2024 16:17:19 GMT

Have you looked into the GeometryEngine.Instance.NearestPoint?

Re: Nearest Feature

sonj — Mon, 19 Aug 2024 04:29:40 GMT

IIndexQuery takes IFeatureIndex.FeatureClass is my target FeatureLayer so IIndexQuery.NearestFeature will return the feature ID of the target layer. Pro SDK NearestPoint function takes geometry—the objective is to find the nearest feature ID from a specific featurelayer. If I know the geometry my problem is resolved.

Re: Nearest Feature

sonj — Tue, 20 Aug 2024 07:21:30 GMT

Is there anyone here that can assist me? I did some research on Analysis.Near(). The functionality is almost exactly what we need, except it updates the closest feature ID and adds new fields. We have no desire to update client data.

Re: Nearest Feature

GKmieliauskas — Tue, 20 Aug 2024 13:19:26 GMT

Hi,

You can create temporary GDB for Analysis.Near(). Clean and fill it with your analysis data each time.

Re: Nearest Feature

sonj — Thu, 13 Feb 2025 12:41:08 GMT

The Analysis.Near code is executing but the Point layer is not updating.

await QueuedTask.Run(async () => { Table targetFeatureTable = targetFeatureLayer.GetTable(); string pointFeaturePath = pointFeatureClass.GetPath().ToString(); // point feature layer string targetFeaturePath = targetFeatureTable.GetPath().ToString(); // polyline feature layer var environments = Geoprocessing.MakeEnvironmentArray(overwriteoutput: true); var parameters = Geoprocessing.MakeValueArray(pointFeaturePath, targetFeaturePath, "NO_LOCATION", "NO_ANGLE", "PLANAR", "NEAR_FID NEAR_FID;NEAR_DIST NEAR_DIST"); IGPResult result = await Geoprocessing.ExecuteToolAsync("analysis.Near", parameters, environments); // Check the result if (result.IsFailed) { throw new Exception("Near tool execution failed: " + result.ErrorMessages); } });

Re: Nearest Feature

sonj — Mon, 17 Feb 2025 13:49:39 GMT

It is working by changing the parameters. It may be helpful to others hence sharing code snippet.

var parameters = Geoprocessing.MakeValueArray(pointFeatureClass, targetFeatureLayer, "NEAR_FID NEAR_FID;NEAR_DIST NEAR_DIST");