Skip to content

Latest commit

 

History

History
56 lines (42 loc) · 3.11 KB

readme.md

File metadata and controls

56 lines (42 loc) · 3.11 KB
Raw

Trace a utility network

Discover connected features in a utility network using connected, subnetwork, upstream, and downstream traces.

Use case

You can use a trace to visualize and validate the network topology of a utility network for quality assurance. Subnetwork traces are used for validating whether subnetworks, such as circuits or zones, are defined or edited appropriately.

How to use the sample

Tap on one or more features while 'Add starting locations' or 'Add barriers' is selected. When a junction feature is identified, you may be prompted to select a terminal. When an edge feature is identified, the distance from the tapped location to the beginning of the edge feature will be computed. Select the type of trace using the drop down menu. Click 'Trace' to initiate a trace on the network. Click 'Reset' to clear the trace parameters and start over.

How it works

  1. Create a MapView and subscribe to its GeoViewTapped event.
  2. Create and load a Map that contains FeatureLayer(s) that are part of a utility network.
  3. Create and load a UtilityNetwork using the utility network feature service URL and the map created in step 2.
  4. Add a GraphicsOverlay with symbology that distinguishes starting locations from barriers.
  5. Identify features on the map and add a Graphic that represents its purpose (starting location or barrier) at the tapped location.
  6. Create a UtilityElement for the identified feature.
  7. Determine the type of this element using its NetworkSource.SourceType property.
  8. If the element is a junction with more than one terminal, display a terminal picker. Then set the junction's Terminal property with the selected terminal.
  9. If an edge, set its FractionAlongLine property using GeometryEngine.FractionAlong.
  10. Add this UtilityElement to a collection of starting locations or barriers.
  11. Create TraceParameters with the selected trace type along with the collected starting locations and barriers (if applicable).
  12. Set the TraceParameters.TraceConfiguration with the utility tier's TraceConfiguration property.
  13. Run a UtilityNetwork.TraceAsync with the specified parameters.
  14. For every FeatureLayer in the map, select the features using the UtilityElement.ObjectId from the filtered list of UtilityElementTraceResult.Elements.

Relevant API

  • FractionAlong
  • UtilityAssetType
  • UtilityDomainNetwork
  • UtilityElement
  • UtilityElementTraceResult
  • UtilityNetwork
  • UtilityNetworkDefinition
  • UtilityNetworkSource
  • UtilityTerminal
  • UtilityTier
  • UtilityTraceConfiguration
  • UtilityTraceParameters
  • UtilityTraceResult
  • UtilityTraceType
  • UtilityTraversability

About the data

The feature service in this sample represents an electric network in Naperville, Illinois, which contains a utility network used to run the subnetwork-based trace.

Tags

condition barriers, downstream trace, network analysis, subnetwork trace, trace configuration, traversability, upstream trace, utility network, validate consistency