Generate Calibration Points (Location Referencing)—ArcGIS Pro

Available with Location Referencing license.

Summary

Generates calibration points for any route shape provided, including complex shapes such as self-closing, self-intersecting, and branched routes.

Usage

An LRS dataset is required to run this tool. To create an LRS dataset, add the calibration point, centerline, and redline layers to a feature dataset; then run the Modify LRS tool with the geodatabase as the input.
Input Polyline Features are the basis for the calibration points that will be generated.
Calibration Point Feature Class must be registered with the LRS.
LRS Network must be registered with the LRS.
Derived LRS Networks are not supported as the LRS Network.
Z-values are considered when calculating the geometric length of the centerlines.
Gap calibration rules are followed when generating calibration points.
Learn more about calibrating routes with physical gaps in ArcGIS Roads and Highways or calibrating routes with physical gaps in ArcGIS Pipeline Referencing.

Syntax

arcpy.locref.GenerateCalibrationPoints(in_polyline_features, route_id_field, from_date_field, to_date_field, in_calibration_point_feature_class, lrs_network, {calibration_direction}, {calibration_method})

Parameter	Explanation	Data Type
in_polyline_features	The features that will be used as the source to calculate the measure values for calibration points.	Feature Layer
route_id_field	The field containing values that uniquely identify each route. The field type must match the Route ID field in the calibration point feature class.	Field
from_date_field	The field containing the From Date values of a route.	Field
to_date_field	The field containing the To Date values of a route.	Field
in_calibration_point_feature_class	The existing calibration point feature class to which new features will be added.	Feature Layer
lrs_network	The LRS Network for which the measure values will be generated in the calibration points feature class.	String
calibration_direction (Optional)	Specifies the direction of increasing calibration on a route when creating new calibration points. DIGITIZED_DIRECTION —The direction of digitization of the Input Polyline Features determines the direction of calibration for the route. This is the default. MEASURE_DIRECTION —The direction of increasing m-values of the Input Polyline Features determines the direction of calibration for the route. If Input Polyline Features does not include m-values, the digitized direction will be used instead.	String
calibration_method (Optional)	The method used to determine the measures on a route when creating calibration points. GEOMETRY_LENGTH —Only geometry length is supported as the calibration method.	String

Derived Output

Name	Explanation	Data Type
out_calibration_point_feature_class	The updated calibration features.	Feature Layer
out_details_file	A text file that details changes made by the tool.	Text File

Code sample

GenerateCalibrationPoints example 1 (Python window)

The following Python window script demonstrates how to use the GenerateCalibrationPoints function in the Python window.

# Name: GenerateCalibrationPoints.py
# Description: Build calibration point features when an LRS already exists in the geodatabase.
# Requires: ArcGIS Location Referencing

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

# Tool variables:
in_polyline_features = "SourceRoutes"
route_id_field = "RouteID"
from_date_field = "FromDate"
to_date_field = "ToDate"
in_calibration_point_feature_class = "Calibration_Point"
lrs_network = "NonLineNetwork"

# Set current workspace
arcpy.env.workspace = r"C:\Data\UPDM.gdb"

# Execute Generate Calibration Points
arcpy.GenerateCalibrationPoints_locref(in_polyline_features, route_id_field, from_date_field, to_date_field, in_calibration_point_feature_class, lrs_network, 'MEASURE_DIRECTION', 'GEOMETRY_LENGTH')

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

GenerateCalibrationPoints example 2 (stand-alone script)

The following stand-alone script demonstrates how to use the GenerateCalibrationPoints function.

# Name: GenerateCalibrationPoints.py
# Description: Build calibration point features when an LRS already exists in the geodatabase.
# Requires: ArcGIS Location Referencing

# Import arcpy module
import arcpy

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

# Local variables:
SourceRoutes = r"C:\Data\SourceData.gdb\LRS\SourceRoutes"
RouteID = "RouteID"
FromDate = "FromDate"
ToDate = "ToDate"
CalibrationPoint = r"C:\\Data\UPDM.gdb\LRS\Calibration_Point"
Network = "EngineeringNetwork"

# Process: Generate Calibration Points
arcpy.GenerateCalibrationPoints_locref(SourceRoutes, RouteID, FromDate, ToDate, CalibrationPoint, Network, 'MEASURE_DIRECTION', 'GEOMETRY_LENGTH')

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

Environments

Current Workspace, Parallel Processing Factor

Parallel Processing Factor: The default value for this environment, if left blank, is 100%. Any absolute value for the environment is always clamped between 0 and the number of logical cores in that machine.

Licensing information

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