Finding orphaned road segments

Question

I have a shape file of road network. Some of the roads (polylines) are not connected i.e. they are orphaned. I need to identify those orphaned segments so that I can edit. Is there any tool or ideas that you can help me with? Thank you.

DanLee · Answer

Hey Chris,

I am really glad that it worked for you. Thank you very much for taking the time and letting me and other people know.

ChrisHust · Answer

To find lines not connected on both ends, try:

1. Run Feature Vertices To Points tool (Data Management toolbox - Features) with the DANGLE option to get all dangle points. The output points carry ORIG_FID. Lines not connected on both ends will get two points.
2. Run Frequency tool (Analysis toolbox - Statistics) on the dangle points; specify ORIG_FID field.
3. Run Join Field tool (Data Management toolbox - Join) to join the lines/roads feature class with the Frequency table via OBJECTID and ORIG_FID; specify to transfer FREQUENCY field. Now any lines with FREQUENCY = 2 are orphaned.

Does that work for you?

I'm working on pipeline data checks, and this works perfectly to find any errors when importing multiple data sets from other sources like autoCAD.

DanLee · Answer

To find lines not connected on both ends, try:

1. Run Feature Vertices To Points tool (Data Management toolbox - Features) with the DANGLE option to get all dangle points. The output points carry ORIG_FID. Lines not connected on both ends will get two points.
2. Run Frequency tool (Analysis toolbox - Statistics) on the dangle points; specify ORIG_FID field.
3. Run Join Field tool (Data Management toolbox - Join) to join the lines/roads feature class with the Frequency table via OBJECTID and ORIG_FID; specify to transfer FREQUENCY field. Now any lines with FREQUENCY = 2 are orphaned.

Does that work for you?