Generate Edgematch Links (Editing)

License Level:BasicStandardAdvanced


Finds matching but disconnected line features along the edges of the source data's area and its adjacent data's area, and generates edgematch links from the source lines to the matched adjacent lines.

Learn more about edgematching


Generate Edgematch Links



GenerateEdgematchLinks_edit (source_features, adjacent_features, out_feature_class, search_distance, {match_fields})
ParameterExplanationData Type

Line features as edgematching source features. All edgematch links start at source features.

Feature Layer

Line features adjacent to source features. All edgematch links end at matched adjacent features.

Feature Layer

Output feature class containing lines representing edgematch links.

Feature Class

The distance used to search for match candidates. A distance must be specified and it must be greater than zero. You can choose a preferred unit; the default is the feature unit.

Linear unit
[[source_field, target_field],...]

Fields from source and target features, where target fields are from the adjacent features. If specified, each pair of fields are checked for match candidates to help determine the right match.

Value Table

Code Sample

GenerateEdgematchLinks example 1 (Python window)

The following Python window script demonstrates how to use the GenerateEdgematchLinks function in immediate mode.

import arcpy
arcpy.env.workspace = "C:/data"
                                  "countyB_Roads.shp", "em_Links.shp"
                                  "25 Feet")
GenerateEdgematchLinks example 2 (stand-alone Python script)

The following stand-alone script is a simple example of how to apply the GenerateEdgematchLinks function in a scripting environment.

# Name:
# Description: Generates links for rubbersheeting spatial adjustment. The links go
#              from base road data to newly updated road data. The links are then
#              analyzed for potential errors; they are finally used to adjust the
#              base roads (a copy is made) to better align with the updated roads.
# Author:      Esri
# -----------------------------------------------------------------------

# Import system modules
import arcpy
from arcpy import env

# Set environment settings
env.overwriteOutput = True
env.workspace = r"D:\conflationTools\ScriptExamples\data.gdb"

# Set local variables
sourceFeatures = "baseRoads"
targetFeatures = "updateRoads"
grlOutput = "grlinks_out"
grlOutputPts = "grlinks_out_pnt"

search_distance = "300 Feet"
match_fields = "FULLNAME RD_NAME"

qaLocations = "qa_locations"

# Generate rubbersheet links
arcpy.GenerateRubbersheetLinks_edit(sourceFeatures, targetFeatures, grlOutput, search_distance, match_fields)

# ====================================================================================
# Note 1:  The result of GenerateRubbersheetLinks may contain errors; see tool reference.
#          Inspection and editing may be necessary to ensure correct links before using
#          them for rubbersheeting.
#          One of the common errors are intersecting or touching links. Their locations 
#          can be found by the process below.
# ====================================================================================

# Find locations where links intersect or touch; the result contains coincident points
arcpy.Intersect_analysis(grlOutput, qaLocations, "", "", "POINT")

# Delete coincident points
arcpy.DeleteIdentical_management(qaLocations, "Shape")

# ====================================================================================
# Note 2:  At this point you can manually inspect locations in qaLocations; delete or
#          modify links as needed.
# ====================================================================================

# Make a copy of the sourceFeatures for rubbersheeting
arcpy.CopyFeatures_management(sourceFeatures, "sourceFeatures_Copy")

# Use the links for rubbersheeting
arcpy.RubbersheetFeatures_edit("sourceFeatures_Copy", grlOutput, grlOutputPts, "LINEAR")


Related Topics

Licensing Information

ArcGIS for Desktop Basic: No
ArcGIS for Desktop Standard: No
ArcGIS for Desktop Advanced: Yes