Latest Contributions by LinaYap1

Hi, I had attached my test code here, but I won't be able to provide the network dataset used. Also, I had observed that my RouteResult.Routes[0].GetTotalLength(LinearUnits.Meter) is always 0 - might that be the problem to the scaled barrier computation? Thanks, Lina ... View more

Hi, right now I am using 10.2.6 to test... The code segment below (ORIGINAL) also produces the AccessViolationException with 10.2.6 occasionally. Note if the Exception do not happen on the first run, restart application again. I seem to get this exception 1 out of 5 times. I made some slight changes to the original code, and AccessViolationException seems to be eliminated. I have not done rigorous testing yet to ensure that this behave safely...: Changes (See UPDATED code segment below): - Remove LocalRouteTask instance creation in Parallel() method. - Create LocalRouteTask instance in the SolveAsync() method, and then use that instance to solve route problem. This somehow seems eliminates the AccessViolationException. NetworkAnalystException is still thrown sometimes on the first run, with message "Cannot solve". I am guessing that in the original code segment, LocalRouteTask was created in another thread (eg. ThreadID = 10), and then was used to solve routing problem in other threads (eg. ThreadID=15 and ThreadID=16) which might cause the Exception to happen(?). Just my guess - would be nice to know exactly why AccessViolationException happens. The following will also cause the AccessViolationException to occur. Don't really suppose it is thread issue... void Parallel() { ...   LocalRouteTask task1 = new LocalRouteTask(Constants.NetworkDB);   RouteParameters param1 = await GetParam(...);   LocalRouteTask task2 = new LocalRouteTask(Constants.NetworkDB);   RouteParameters param2 = await GetParam(...); ...   for (int i = 0; i < 5; i++)   {   Task t1 = task1.SolveAsync(param1);   Task t2 = task2.SolveAsync(param2);   await t1;   await t2;   } ... } ORIGINAL--- private async Task<RouteParameters> GetParam(LocalRouteTask task, string dirStyle, bool includeBarrier) {   RouteParameters routeParams = await task.GetDefaultParametersAsync();   routeParams.FindBestSequence = false;   routeParams.PreserveFirstStop = false;   routeParams.PreserveLastStop = false;   routeParams.OutputLines = OutputLine.TrueShapeWithMeasure;   routeParams.DirectionsLengthUnit = LinearUnits.Meters;   routeParams.DirectionsStyleName = dirStyle;   routeParams.DirectionsLanguage = new CultureInfo("en-US"); ;   routeParams.ReturnStops = true;   routeParams.ReturnRoutes = true;   routeParams.ReturnDirections = true;   routeParams.ReturnPointBarriers = true;   routeParams.ReturnPolygonBarriers = true;   routeParams.ReturnPolylineBarriers = true;   routeParams.IgnoreInvalidLocations = false;   return routeParams; } private async void Parallel(object sender, RoutedEventArgs e) {   try   {   MapPoint mp0 = new MapPoint(11541840.7711455, 146578.730235322, SpatialReference.Create(102100));   MapPoint mp1 = new MapPoint(11570869.2480698, 146689.314909319, SpatialReference.Create(102100));   List<Graphic> stops = new List<Graphic>() { new Graphic(mp0), new Graphic(mp1) };   LocalRouteTask task1 = new LocalRouteTask(Constants.NetworkDB);   RouteParameters param1 = await GetParam(task1, Constants.NADesktop, false);   param1.SetStops(stops);   LocalRouteTask task2 = new LocalRouteTask(Constants.NetworkDB);   RouteParameters param2 = await GetParam(task2, Constants.NADesktop, false);   param2.SetStops(stops);   Stopwatch stopwatch = new Stopwatch();   stopwatch.Start();   for (int i = 0; i < 5; i++)   {   Task t1 = Task.Run(async () => { await SolveRouteAsync(1, stopwatch, task1, param1); });   Task t2 = Task.Run(async () => { await SolveRouteAsync(2, stopwatch, task2, param2); });   await t1;   await t2;   }   //stopwatch.Stop();   Console.WriteLine("Parallel timing: " + stopwatch.ElapsedMilliseconds);   task1.Dispose();   task2.Dispose();   }   catch (AggregateException ex)   {   Console.WriteLine(ex.ToString());   }   catch (Exception ex)   {   Console.WriteLine(ex.ToString());   } } private async Task SolveRouteAsync(int id, Stopwatch stopwatch, LocalRouteTask task, RouteParameters param) {   Console.WriteLine("elapsed run {0}: {1} ", id, stopwatch.ElapsedMilliseconds);   RouteResult t1 = await task.SolveAsync(param).ConfigureAwait(false); } ORIGINAL END--- UPDATED--- private async void Parallel(object sender, RoutedEventArgs e) {   try   {   MapPoint mp0 = new MapPoint(11541840.7711455, 146578.730235322, SpatialReference.Create(102100));   MapPoint mp1 = new MapPoint(11570869.2480698, 146689.314909319, SpatialReference.Create(102100));   List<Graphic> stops = new List<Graphic>() { new Graphic(mp0), new Graphic(mp1) };   Stopwatch stopwatch = new Stopwatch();   stopwatch.Start();   for (int i = 0; i < 5; i++)   {   Task t1 = Task.Run(async () => { await SolveRouteAsync(1, stopwatch, stops); });   Task t2 = Task.Run(async () => { await SolveRouteAsync(2, stopwatch, stops); });   await t1;   await t2;   }   //stopwatch.Stop();   Console.WriteLine("Parallel timing: " + stopwatch.ElapsedMilliseconds);   }   catch (AggregateException ex)   {   Console.WriteLine(ex.ToString());   }   catch (Exception ex)   {   Console.WriteLine(ex.ToString());   } } private async Task SolveRouteAsync(int id, Stopwatch stopwatch, List<Graphic> stops) {   LocalRouteTask task = new LocalRouteTask(Constants.NetworkDB);   RouteParameters param = await GetParam(task, Constants.NADesktop, false);   param.SetStops(stops);   Console.WriteLine("elapsed run {0}: {1} ", id, stopwatch.ElapsedMilliseconds);   RouteResult t1 = await task.SolveAsync(param).ConfigureAwait(false);   task.Dispose(); } ... 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Hi Asser, Thanks for the reply. I am actually interested in "how" the cost value is being represented/provided through the runtime API. Ie. taking a look at ArcGIS Desktop​, Route Properties section, is it safe to assume that Total_[ImpedanceAttribute] will be included in Runtime API: Route.TotalCost dictionary? -Based on my observation, with the only impedance attribute (Length) I have, Route.TotalCost[Total_Length] is never provided along with any of the Route object. -So then, I tried this: routeParameters.AccumulateAttributeNames.Add("Length") - which then throws an internal error when attempting to solve for the network routing So will Route.TotalCost property actually be providing accumulated cost based on the impedance attribute? Am I missing any configuration? Thanks in advance! ... View more

Oh yes, I was looking for the HTTP debugging traffic - the LocalServerUtility works for me. Thanks! ... View more

Hi Antti, I had not received your mail. I will mail you another address. Thanks. Lina ... View more