Latest Contributions by jackpearson1

Excellent - any indicative timeframe? ... View more

Adding my voice here. AGP on .net framework has now become a hinderance in our development  ... View more

Thanks all - i have achieved a fair performance improvement using a combination of memory geodatabase + DDL API + insert cursor. ... View more

  // Works : protected async Task MemDB_Geoprocessing() { string gdbPath = "memory"; //string gdbPath = CoreModule.CurrentProject.DefaultGeodatabasePath; string featureclassName = "testFC"; string featureclassType = "POINT"; int spatialRefID = 20351; //Z51 var activeMap = MapView.Active.Map; // 1) Create the Feature class table - use GP tools var sr = SpatialReferenceBuilder.CreateSpatialReference(spatialRefID); List<object> geoProcessingArgs = new List<object> { gdbPath, featureclassName, featureclassType, "", "DISABLED", "DISABLED", sr }; GPExecuteToolFlags flags = GPExecuteToolFlags.None | GPExecuteToolFlags.AddOutputsToMap; IGPResult result = null; var t = Task.Run(async () => { result = await Geoprocessing.ExecuteToolAsync("CreateFeatureclass_management", Geoprocessing.MakeValueArray(geoProcessingArgs.ToArray()), null, null, null, flags); }); await (t); // 2) Set up attribute structure int numFields = 64 / 2; // 64 fields, 1 each of type text, numeric var fields = new Dictionary<string, string>(); for (int fldCnt = 0; fldCnt < numFields; fldCnt++) { fields.Add($"Field{fldCnt}", $"Text # 255 myDefaultValue"); fields.Add($"Field{fldCnt}_num", $"DOUBLE # # #"); } AddFields(gdbPath + @"\" + featureclassName, fields); // 3) Add some test point features to the Feature layer var pointFeatureLayer = activeMap.FindLayers(featureclassName)[0] as FeatureLayer; var featureAttribs = new Dictionary<string, object>(); Random rnd = new Random(); var createOp = new EditOperation() { Name = "Generate points", SelectNewFeatures = false }; long pointCnt = 0; for (pointCnt = 0; pointCnt < 50*1000; pointCnt++) // for each new point feature { featureAttribs.Clear(); // geometry - random-ish coords Coordinate2D newCoordinate = new Coordinate2D(320000 + rnd.Next(-1000, 1000), 7140000 + rnd.Next(-1000, 1000)); featureAttribs.Add("Shape", MapPointBuilder.CreateMapPoint(newCoordinate)); // attribute values for (int fldCnt = 0; fldCnt < numFields; fldCnt++) { featureAttribs.Add($"Field{fldCnt}", $"SomeText{fldCnt}"); featureAttribs.Add($"Field{fldCnt}_num", fldCnt); } createOp.Create(pointFeatureLayer, featureAttribs); // queue feature creation } // commit features Task<bool> tRes = createOp.ExecuteAsync(); // execute the batch edit operation await (tRes); if (!tRes.Result) throw new Exception(createOp.ErrorMessage); Task tse = Task.Run(async () => { await Project.Current.SaveEditsAsync(); }); await(tse); Task tz = Task.Run(async () => { await MapView.Active.ZoomToAsync(pointFeatureLayer, false); }); await(tz); } private void AddFields(string tableNamePath, Dictionary<string, string> fields) { string fieldNames = ""; List<object> geoProcessingArgs = null; foreach (KeyValuePair<string, string> item in fields) { fieldNames = String.Format("{0}{1} {2}; ", fieldNames, item.Key, item.Value); } geoProcessingArgs = new List<object>{tableNamePath,fieldNames}; var t = Task.Run(async () => { var result = Geoprocessing.ExecuteToolAsync("management.AddFields", Geoprocessing.MakeValueArray(geoProcessingArgs.ToArray())); }); t.Wait(); }   ... View more

I have got this working today actually. Using  memory gdb has approximately doubled the performance, which is certainly an improvement. I'll post my working test harness code for reference, but would love to know if you can see how to improve significantly ? For example the geoprocessing call to create the empty featureclass seems to be taking longer than QGIS takes to create and display a 100k points layer - surely I am doing something wrong here? Also - I would be interested to see what the best practice equivalent would look like in the DDL API ? Thanks   ... View more

Thanks Rich - are you aware of any c# examples ? i am struggling to get geoprocessing to work with memory geodb. ... View more

Thanks for those suggestions - shapefiles i think have some limitations, will look at in-mem database : It is not clear to me from documentation whether i can use existing geoprocessing-style code with an in-mem geodB, or whether i need to move all code over to the DDL API ? ... View more

Thanks Thomas , I have looked through the articles you referred to and checked out CIMViewer. Actually I cannot see how to achieve the desired state in the retail UI. For example, using your USA_Major_Cities dataset as an example of what i need to display, how would i set up symbology such as : 1) control symbol shape by the "Place Class" field [e.g. squares for cities, triangles for villages etc] plus 2) Control the symbol size by the "Avg Fam Sz" field plus 3) Control the symbol colour by a continuous range using the "Med Age M" field Note i want the fields to be independently controlled - there is no benefit to the user in symbolising the permutations of symbol shape/size/colour etc and in any case the permutations would run to hundreds/thousands; Alternatively is it possible to implement my own renderer ? thanks, Jack ... View more