Enable Derived Measure Fields (Location Referencing)

Summary

Enables fields to store the derived route ID, derived route name, and derived measure fields for the specified LRS event feature class.

Usage

• The fields that will store the derived route ID, derived route name, and derived measure fields need to be available prior to running this tool.

• You can use an empty event feature class or event feature class that has loaded records.

Parameters

Dialog

Label	Explanation	Data Type
LRS Event Feature Class	An existing event feature class or feature layer that is registered to an LRS.	Feature Layer
Derived Route ID Field (Optional)	The derived route ID field.	Field
Derived Route Name Field (Optional)	The derived route name field.	Field
Derived (From) Measure Field (Optional)	The derived from measure field.	Field
Derived To Measure Field (Optional)	The derived to measure field.	Field

Derived Output

Label	Explanation	Data Type
Updated Input Feature Class	The updated feature layer for the event.	Feature Layer

Python

arcpy.locref.EnableDerivedMeasureFields(in_feature_class, {derived_route_id_field}, {derived_route_name_field}, {derived_from_measure_field}, {derived_to_measure_field})

Name	Explanation	Data Type
in_feature_class	An existing event feature class or feature layer that is registered to an LRS.	Feature Layer
derived_route_id_field (Optional)	The derived route ID field.	Field
derived_route_name_field (Optional)	The derived route name field.	Field
derived_from_measure_field (Optional)	The derived from measure field.	Field
derived_to_measure_field (Optional)	The derived to measure field.	Field

Derived Output

Name	Explanation	Data Type
out_feature_class	The updated feature layer for the event.	Feature Layer

Code sample

EnableDerivedMeasureFields example 1 (Python window)

The following Python window script demonstrates how to use the EnableDerivedMeasureFields tool in immediate mode.

# Name: EnableDerivedMeasureFields_ex1.py
# Description: Enables fields to store the derived network route id, route name and measure fields.
# Requires: ArcGIS Location Referencing

# Check out license
arcpy.CheckOutExtension("LocationReferencing")

# tool variables 
in_feature_class = "c:\\APR.gdb\\LRS\LineEventFeatureClass"
Derived_route_id_field = "DerivedRouteId"
Derived_route_name_field = "DerivedRouteName"
Derived_from_Measure_field = "DerivedFromMeasure"
Derived_to_Measure_field = "DerivedToMeasure"

# Set current workspace
arcpy.env.workspace = "c:\\EnableDerivedMeasureFields\\Py\\APR.gdb\\LRS\\LineEventFeatureClass"

# Execute the tool
arcpy.EnableDerivedMeasureFields_locref(in_feature_class, Derived_route_id_field, Derived_route_name_field, Derived_from_Measure_field, Derived_to_Measure_field)

# Check in license
arcpy.CheckInExtension('LocationReferencing')

EnableDerivedMeasureFields example 2 (stand-alone script)

The following script demonstrates how to use the EnableDerivedMeasureFields tool in a stand-alone Python script.

# Name: EnableDerivedMeasureFields_ex2.py
# Description: Enables fields to store the derived network route id, route name and measure fields.
# Requires: ArcGIS Location Referencing

# Import arcpy module
import arcpy

# Check out license
arcpy.CheckOutExtension("LocationReferencing")

# Local variables:
in_feature_class = r"c:\EnableDerivedMeasureFields\Py\APR.gdb\LRS\LineEventFeatureClass"
Derived_route_id_field = "DerivedRouteId"
Derived_route_name_field = "DerivedRouteName"
Derived_from_Measure_field = "DerivedFromMeasure"
Derived_to_Measure_field = "DerivedToMeasure"

# Execute the tool
arcpy.EnableDerivedMeasureFields_locref(in_feature_class, Derived_route_id_field, Derived_route_name_field, Derived_from_Measure_field, Derived_to_Measure_field)

# Check in license
arcpy.CheckInExtension('LocationReferencing')

Environments

This tool does not use any geoprocessing environments.

Licensing information

• Basic: Requires ArcGIS Location Referencing
• Standard: Requires ArcGIS Location Referencing
• Advanced: Requires ArcGIS Location Referencing