AnsweredAssumed Answered

Delete duplicate polylines base on geometry

Question asked by 2CQuiker on Dec 16, 2019
Latest reply on Dec 17, 2019 by bixb0012

I have a feature class of polylines that are duplicate, one on top of the other and i would like to delete all except for 1 and it doesn't matter witch one just as long as there is one left. I would like this to be done in arcmap.


I have the following that identifies the duplicates but i am not sure  on how to delete duplicates in the set.


import itertools, arcpy

arcpy.env.overwriteOutput = True
mxd = arcpy.mapping.MapDocument("CURRENT")
df = arcpy.mapping.ListDataFrames(mxd, "Layers")[0]
lyr = arcpy.mapping.ListLayers(mxd, "Parcel_Lines1")[0]

dsc = arcpy.Describe(lyr) 
sr = dsc.spatialReference 
oid_field_name = dsc.oidFieldName 
# get a cursor on the input features 
rows1 = arcpy.SearchCursor(lyr) 
# exclude features already compared once 
exclude = [] 
# iterate through the first coursor 
for row1 in rows1: 
    oid1 = row1.getValue(oid_field_name) 
    shp1 = row1.shape 
    # get a second cursor on the same input features 
    rows2 = arcpy.SearchCursor(lyr) 
    # add the feature to be compared to exclude list 
    # create a set to hold duplicate features 
    group = set() 
    # iterate through the second cursor 
    for row2 in rows2: 
        oid2 = row2.getValue(oid_field_name) 
        shp2 = row2.shape 
        # ignore features already compared 
        if oid2 in exclude: 
        # test equality 
        if shp1.equals(shp2): 
            # add both feature ids to the set of identical features 
            # add the feature just compared to the exclude list 
    if group:  # if the group is not empty 
        print group