Latest Contributions by RehmSoftware

Hi, I have a network of triangles (TIN) and when I draw them all on a feature layer I can easily merge them together into one big polygon (or a few polygons) with EditOperation.Merge. Works well and so far so good. But of course it's a bit silly to draw for example 100000 triangles (which takes ages) and THEN merge them. Instead it would be much better to have the PolygonBuilder create the polygons and then merge them right away and just add one big polygon onto my feature layer. In pseudocode it would look a bit like this: var editOp = ...; var polygons = new List<Polygon>(myTriangles.Count); foreach (var tr in myTriangles) { var coordinates = tr.GetCoordinates3D(); var pg = PolygonBuilder.CreatePolygon(coordinates, spatialRef); polygons.Add(pg); } editOp.Merge(polygons); await editOp.ExecuteAsync();‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ I know this doesn't work right ouf of the box but is there a way I can do this? After all, the merge functionality is there and I don't see why EditOperation.Merge shouldn't work on a sequence of polygons just as it does work on a sequence of Object IDs... Thanks in advance Christian ... View more

Hi, I have a very simple need: I want to delete a feature class from an ArcGIS Pro project permanently. arcpy.Delete_management only seems to delete the layer from the map, but not the feature class. How can I delete the feature class permanently? (Apart from arcpy I could also use the ArcGIS Pro SDK, just in case somebody knows a way to do it there) Thanks in advance Christian ... View more

Hi, ArcGIS has a nice command to edit the vertices (add, delete, move etc.) of a polyline and it also makes it easy for me to actually call it from a Button: var iCommand = FrameworkApplication.GetPlugInWrapper("esri_editing_EditVerticesModifyFeature") as ICommand; if (iCommand != null && iCommand.CanExecute(null)) iCommand.Execute(null);‍‍‍ Now whenever a polyline vertice is added, moved or deleted through this command I need to update an internal data structure. Is there a way to get this information somehow? Maybe there's an event or something? Because it would be great if I could just use the ArcGIS functionality instead of having to re-implement most of the stuff.. Thanks in advance! Best regards Christian ... View more

Hi, I have a simple polyline feature layer and there are some polylines on it that I want to reshape/replace with new polylines and I'm having a little trouble with it. So, this code here works fine: public async Task SetPolylineShapeAsyncViaCursor(int polylineId, ArcGISGeo.Polyline newPolyline) { FeatureLayer polylineFeatureLayer = //Get feature layer if (polylineFeatureLayer == null) return; await ArcGISTasks.QueuedTask.Run(() => { var queryFilter = new ArcGISData.QueryFilter(); queryFilter.WhereClause = String.Format("{0} = {1}", "PID", polylineId); var cursor = polylineFeatureLayer.Search(queryFilter); if (cursor.MoveNext()) { var feature = (ArcGISData.Feature)cursor.Current; feature.SetShape(newPolyline); feature.Store(); } }); }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ However, I'd very much prefer to use an EditOperation since this polyline operation is part of a bigger editing process and I eventually want to pass around an EditOperation instance that all methods use and in the end ExecuteAsync is called once. For now I'd like to have it working with a local EditOperation, but it doesn't work when I try to modify the shape via EditOperation.Reshape (it only yields an "EditOperation failed" error): public async Task SetPolylineShapeAsyncViaReshape(int polylineId, ArcGISGeo.Polyline newPolyline) { FeatureLayer polylineFeatureLayer = //Get feature layer if (polylineFeatureLayer == null) return; long polylineOID = await this.GetPolylineOIDAsync(polylineId); if (polylineOID == -1) return; var polylineOperation = new EditOperation(); polylineOperation.Reshape(polylineFeatureLayer, polylineOID, newPolyline); await polylineOperation.ExecuteAsync(); }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ It must be a small detail that's missing but I'd be glad if somebody could tell me what I'm doing wrong. Thanks in adavance Best Regards Christian ... View more

Hi, I have a feature layer with polylines, let's call it "polyline_layer". And there are already some polylines on this layer. Now I created a map tool that lets the user sketch a new polyline on that specific layer. So far so good, but I need to check whether the newly sketched polyline touches an existing polyline (so I can modify the existing polyline instead of creating a new one).. but when I call "GeometryEngine.Touches" to check whether two polylines touch an exception is thrown ("incompatible spatial references"). How can this happen? The new polyline has been sketched on the same layer that contains the existing polylines. The WKIDs of the spatial references are the same, but IsEqual returns false nonetheless. This seems a bit strange to me?! If I project the sketched polyline into the spatial reference of the layer everything works fine, but it's stilll a bit weird. Here's some example code:     internal class CreatePolyline : MapTool {         public CreatePolyline() {             IsSketchTool = true;             UseSnapping = true;             SketchType = SketchGeometryType.Line;         }         /// <summary>         /// Called when the sketch finishes. This is where we will create the sketch operation and then execute it.         /// </summary>         /// <param name="geometry">The geometry created by the sketch.</param>         /// <returns>A Task returning a Boolean indicating if the sketch complete event was successfully handled.</returns>         protected override async Task<bool> OnSketchCompleteAsync(Geometry geometry) {             var sketchedPolyline = (Polyline)geometry;             if (sketchedPolyline == null)                 return false;             if (sketchedPolyline.PointCount < 2)                 return false;             FeatureLayer polylineFeatureLayer = //Get feature layer called "polyline_layer"             var geoEngine = GeometryEngine.Instance;             await QueuedTask.Run(() => {                 //Uncomment the following lines to avoid the exception                 //var srLayer = polylineFeatureLayer.GetSpatialReference();                 //sketchedPolyline = (Polyline)geoEngine.Project(sketchedPolyline, srLayer);                                 var rowCursor = polylineFeatureLayer.Search();                 while (rowCursor.MoveNext()) {                     var polyline = (Polyline)rowCursor.Current["SHAPE"];                     if (geoEngine.Touches(sketchedPolyline, polyline)) {                         //Do something..                     }                 }             });             return true;         }     }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ I'd be glad if anyone could look into it! Thanks in advance. Best Regards Christian ... View more