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Routing Parameter: OutputLine

Question asked by lyap8408 on Mar 31, 2015
Latest reply on Apr 23, 2015 by ASwelam-esristaff

I am using ArcGIS Runtime for .NET 10.2.4, and doing LocalRouteTask with a .geodatabase file.

Geodatabase file, cost attribute is Length (Meters)


I was testing the behaviour for RouteParameters.OutputLine which seems a little different from expectation based on the documentation


Basic Config:

RouteParameters routeParam = await routeTask.GetDefaultParametersAsync();

routeParam.OutSpatialReference = MapView.SpatialReference;

routeParam.ReturnRoute = true;

routeParam.ReturnDirections = true;

routeParam.DirectionLengthUnits = LinearUnits.Kilometers;

routeParam.DirectionLanguage = new CultureInfo("en-US");


routeParam.ReturnStops = true;

routeParam.ImpedanceAttributeName = "Length";


Varying Setting:

routeParam.OutputLine = Default

Observation: RouteResult is always null.


routeParam.OutputLine = Straight

Observation: RouteResult returns a route, but returns empty Geometry (a Polyline with 0 parts)


routeParam.OutputLine = TrueShape

Observation:  RouteResult returns a route, with a Polyline geometry. Polyline geometry contains M values


routeParam.OutputLine = TrueShapeWithMeasure

Observation: RouteResult returns a route, with a Polyline geometry. Polyline geometry contains M values.


My confusion here is:

- Does OutputLine.Default not solve for routing?

- OutputLine.Straight was suppose to return straight lines between stops, but the observation shows an empty geometry

- OutputLine.TrueShape and TrueShapeWithMeasure shows the same result (both has M values), should that be the case?



Further testing:

routeParam.OutputLine = TrueShapeWithMeasure

routeParameter.OutputGeometryPrecision = 0 / 10 / 1000;

routeParameter.OutputGeometryPrecisionUnit = LinearUnits.Meters


The above configuration returns the same geometry result for different OutGeometryPrecision values. I was expecting higher precision values to lower the number of points/line segments in the returned Geometry. Should that be the case?


Thanks in advance!