PointEventInfo Constructor(Table,String,String,String)

In This Topic

Initializes a new instance of the PointEventInfo class with an offset field.

Syntax

C#
Visual Basic (Declaration)

public PointEventInfo( 
   Table pointEventTable,
   string routeIDFieldName,
   string measureFieldName,
   string offsetFieldName
)

Public Function New( _
   ByVal pointEventTable As Table, _
   ByVal routeIDFieldName As String, _
   ByVal measureFieldName As String, _
   ByVal offsetFieldName As String _
)

Parameters

pointEventTable: The table that contains point events.
routeIDFieldName: The name of the field that contains the route identifier associated with each event.
measureFieldName: The name of the field containing the measure value associated with the point event.
offsetFieldName: The name of the field that identifies the offset of the point event from the underlying route.

Exceptions

Exception	Description
System.ArgumentNullException	measureFieldName, or offsetFieldName is null.
System.ArgumentException	measureFieldName is empty.
ArcGIS.Core.Data.Exceptions.GeodatabaseException	A geodatabase-related exception has occurred.

Example

Create a RouteEventSource via dynamic segmentation process for point events

public void CreatePointEventSource(Geodatabase geodatabase, string routeFeatureClassName = "Roads", string eventTableName = "Accidents", string routeIdFieldName = "RID", string measureFieldName = "Measure")
{
    using (FeatureClass routesFeatureClass = geodatabase.OpenDataset<FeatureClass>(routeFeatureClassName))
    using (Table eventsTable = geodatabase.OpenDataset<Table>(eventTableName))
    {
        RouteInfo routeInfo = new RouteInfo(routesFeatureClass, routeIdFieldName);
        EventInfo eventInfo = new PointEventInfo(eventsTable, routeIdFieldName, measureFieldName);
        RouteEventSourceOptions routeEventSourceOptions = new PointEventSourceOptions(AngleType.Tangent) { ComplementAngle = true };

        using (RouteEventSource routeEventSource = new RouteEventSource(routeInfo, eventInfo, routeEventSourceOptions))
        using (RouteEventSourceDefinition routeEventSourceDefinition = routeEventSource.GetDefinition())
        {
            // Locating errors 
            IReadOnlyList<RouteEventSourceError> errors = routeEventSource.GetErrors();

            // Route event source fields 
            IReadOnlyList<Field> routeEventSourceFields = routeEventSourceDefinition.GetFields();

            // Add RouteEventSource to the ArcGIS Pro map
            FeatureLayerCreationParams layerParams = new FeatureLayerCreationParams(routeEventSource)
            {
                Name = "RoadAccidents"
            };

            LayerFactory.Instance.CreateLayer<FeatureLayer>(layerParams, MapView.Active.Map);
        }
    }
}

Requirements

Target Platforms: Windows 11, Windows 10

ArcGIS Pro version: 3.3 or higher.

Reference

PointEventInfo Class
PointEventInfo Members
Overload List

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