Latest Contributions by JoeHershman

Hi, We have custom LocationDataSource implementations in our app, in addition to using the NmeaLocationData source for connecting various devices for external high accuracy GPS on iOS.  These devices will also provide an app which is used to connect to an RTK server for corrections. I am trying to understand how one applies a datum shift in these cases. What I am trying to do in our custom LocationDataSource is basically project my Wgs84 point still using Wgs84 but applying a GeographicTransformation, prior to sending the point to UpdateLocation var sr = SpatialReferences.Wgs84; MapPoint mp = new MapPoint(longitude, latitude, sr); var geoStep = new GeographicTransformationStep(108363); GeographicTransformation geoTransform = new GeographicTransformation(geoStep); mp = (MapPoint)GeometryEngine.Project(mp, sr, geoTransform);   With the NmeaLocationDataSource I do not know how you would necessary apply the datum shift, until you saved the point. The problem is we don't seem to be coincident when comparing to Field Maps using the same datum shift.  So I am trying to understand if there is a different way this could be done.   The offset is consistent, about 3 feet.   We really need the two apps to be the same because a group within the company uses Field Maps and they may come to locate the assets at a later date ... View more

I find the documentation a bit confusing on this topic. Is it possible to implement an HA Enterprise deployment using only Web Adapter and not a 3rd party load balancer?  If so where is documentation for this  @JonathanQuinn  Personally, I do not see how Web Adapter is setup in front of two Portal machines. ... View more

We are wanting to change some offline WebMaps to use SubtypeFeatureLayer.  A main driver behind this is that it allows us to edit domains in AGOL.  It also is a better general fit with the Utility Network configuration. A big issue making this much more complex is that when you retrieve the LegendInfo objects from SubtypeSublayer these do not have a Name associated to them.  There is no way to identify what a LegendInfo is.  This seems to me to be a bit of a bug, as there is no way to identify what a LegendInfo is unless you somehow know what SubtypeSublayer it was created from.  But it makes it impossible to use the code which already assumed the LegendInfo would have an associated Name (matching the Subtype). Making this issue even more difficult is that LegendInfo is a sealed class.  So it is not even possible to make a subclass and assign a Name that way. This has made, what seemed to me should be a trivial operation into a really complex refactoring because there is no way to pass along the IReadOnly<LegendInfo> collection as the previous code did. This is using Runtime 100.15 ... View more

We have an application that places a Tee and an attached service line (in gas) in a UN.  That part seems to work as expected.  The problem is trying to validate the topology afterwards. This seems like a pretty simple task simply call ValidateNetworkTopology Method  According to documentation this should not be wrapped in an edit operation.  Unfortunately this does not seem to work.  If I try this way, to first expand the envelope public ValidationResult ValidateTopology(UtilityNetwork utilityNetwork, Geometry serviceGeometry) { //expand the area used for validation Envelope envelope = serviceGeometry.Extent.Expand(1.05, 1.05, true); ValidationResult result = utilityNetwork.ValidateNetworkTopology(envelope); } The following exception is received ArcGIS.Core.Data.GeodatabaseEnterpriseException: The specified coordinate exceeds the valid coordinate range. ---> System.Runtime.InteropServices.COMException: Exception from HRESULT: 0x80041590 at ArcGIS.Core.Internal.IUtilityNetworkIOP.UtilityNetwork_ValidateNetworkTopology(IntPtr utilityNetworkHandle, IntPtr extentHandle, Boolean useAsynchronousService, DateTime& timeStamp, Boolean& hasErrors, Int32& dirtyAreasCount, Boolean& isFullUpdate) at ArcGIS.Core.Data.UtilityNetwork.UtilityNetwork.ValidateNetworkTopologyInternal(Geometry extent, InvocationTarget invocationTarget) --- End of inner exception stack trace --- If instead of using the slightly expanded envelope, the service line geometry is sent the method simply times out.  No exception is received Seems pretty straight forward, not sure what is incorrect  Thanks   ... View more

We use a data model with a strong emphasis on subtype based domains.  For those familiar with the Utility Network know this approach is used a great deal. When these layers are published to AGOL the definitions of the subtype based domains are loaded to the service and the service definition reflects these.  The problem is, the UI in AGOL does not support editing or viewing these subtype based domains. My question...does anyone know of a way to modify these domains.  About the only thing I can think of would be to write a tool that does this with the REST API, which is no small undertaking Thanks ... View more

When an iOS application goes into background there are two conditions that can occur in regards to receiving location The user just goes to home screen or goes to another application that is not connected to the external gps device The user goes to an application that does connect to the external gps device.  This is a common occurrence if the user need to go into an application that connects to an NTrip server. What I have observed is that in each of these condition is it seems different things happen to the underlying EASession associated to the EAAccessoryStream object     public EAAccessoryStream(EAAccessory accessory, string protocol) { this._accessory = accessory; this._session = new EASession(accessory, protocol); this._session.InputStream?.Open(); this._session.OutputStream?.Open(); }     In case (1), the session is maintained in case (2) the EASession object would seem to be disposed.  The problem is that there is no way to know which case has occurred. They way I have implemented things is that when the user returns to the application   //_sxblueAccessory is connected EAAccessory Protocal is the protocal string _internaLocationDataSource = NmeaLocationDataSource.FromAccessory(_sxblueAccessory, Protocal); _internaLocationDataSource.StartAsync();    In case (2) above this works without issue.  However, in case (1) you will get a "Starting" status changed followed by a "Failed to Start" status message.  In this case there is also an ErrorOccured notification sent with the following:     Could not initialize an instance of the type 'ExternalAccessory.EASession': the native 'initWithAccessory:forProtocol:' method returned nil. It is possible to ignore this condition by setting ObjCRuntime.Class.ThrowOnInitFailure to false. What appears to happen in this case is that when it tries to create the EAAccessoryStream is it throws this exception because there is already an existing EASession object being held by the NmeaLocationDataSource object.  This is somewhat conjecture just based on what I observe through a lot of logging and going through various scenarios in testing.  As there is no access to the underlying EASession it is hard to see in exactly what happening.  So what would a best practice of how to manage the NmeaLocationDataSource when the app goes into background.  What I am trying now is to call StopAsync when the app goes into background.  This allows just restarting everything without error when the app comes back into foreground.  This does seem to be working.  Honestly, I am not too happy with this solution.  I think the location provider should be able to run in the background unless it is forced to stop because another app took over the connection to the external device.  However, I am unable to see anything that indicates which of the two scenarios has occurred to allow the application to restore in the correct way based on the different conditions. ... View more