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Enable COGO


Enables COGO on a line feature class and adds COGO fields and COGO-enabled labeling to a line feature class. COGO fields store dimensions that are used to create line features in relation to each other.


  • Adds the following COGO fields to the selected line feature class: Arc Length, Direction, Distance, Radius, and Radius2. All fields are of type Double.

  • Adds COGO-related labeling and symbology to the selected line feature class. Lines are drawn with added COGO symbology, and a label expression labels each line with its COGO dimensions if they exist.

  • Run the Disable COGO geoprocessing tool to disable COGO on the line feature class. The COGO fields can be deleted.
  • If one or more of the COGO fields already exist and are of the correct type, only the remaining, missing COGO fields are added.

  • If a line feature class is COGO enabled, the Traverse tool Traverse populates the COGO fields with the entered dimensions.

    Learn more about the Traverse tool

  • If a line feature class is COGO enabled, creating lines with the 2 Point Line tool 2-Point Line using editing constraints populates the COGO fields with the constraint dimensions.
  • The Direction field stores the direction (bearing) of the line from its start point to its endpoint.

  • The Distance field stores the distance (length) of the line.

  • The ArcLength field stores the arc distance between the start point and endpoint of a curved line.

  • The Radius field stores the distance between the curve center point and the curve line.

  • The Radius2 field stores the second radius for a spiral curve. This radius can be set to infinity.


EnableCOGO_management (in_line_features)
ParameterExplanationData Type

The line feature class that will be COGO enabled.

Feature Layer

Derived Output

NameExplanationData Type

The COGO enabled dataset.

Table View

Code sample

EnableCOGO example 1 (Python window)

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

import arcpy
arcpy.env.workspace = "E:\ArcGISXI\Mont\Montgomery.gdb"
EnableCOGO example 2 (stand-alone script)

The following stand-alone script demonstrates how to check for and enable COGO on a line feature class.

import arcpy

# Variable to contain the path of the feature class that is to be COGO Enabled
lineFeatureClass = r"d:\test.gdb\myLineFC"

# Check to see if the feature class is already enabled by using .isCOGOEnabled on a Describe
if arcpy.Describe(lineFeatureClass).isCOGOEnabled == False:
    # If it returns False, run EnableCOGO_management and pass the feature class
    print("{} is already COGO Enabled".format(lineFeatureClass))


This tool does not use any geoprocessing environments.

Licensing information

  • Basic: No
  • Standard: Yes
  • Advanced: Yes

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