topic Extracting non-endpoint vertices from lines in ArcGIS Pro Questions

Extracting non-endpoint vertices from lines

Markbe_utco — Thu, 19 Sep 2024 14:50:20 GMT

I'm looking for a way to extract non-endpoint vertices from a line. I know there is a tool called Feature Vertices to Points but this tool only extracts vertices using either the All Vertices, Start Vertex, or End Vertex point types. I'm looking for a way to extract the all vertices between the starting and ending vertices.

Any suggestions?

Note: The Feature Vertices to Points tool has an option to select Midpoint as the point type. Using this option creates a point at the midpoint of the line, even if no actual vertex exists at that point of the line.

Re: Extracting non-endpoint vertices from lines

DavidSolari — Thu, 19 Sep 2024 16:27:14 GMT

You can use Python to read the geometry field using Cursors, then extract the in-between vertices using methods on the Polyline objects the cursor returns, then use another cursor to write the results where you need it.

Re: Extracting non-endpoint vertices from lines

Markbe_utco — Thu, 19 Sep 2024 18:08:41 GMT

How is this done within Model Builder?

Re: Extracting non-endpoint vertices from lines

DavidSolari — Thu, 19 Sep 2024 18:16:22 GMT

You might be able to use the Calculate Value utility to run all the Python code you need, but I think that just overcomplicates things. You're better off writing this as a script tool. If you're not comfortable with that then hopefully someone with more Modelbuilder experience can help.

Re: Extracting non-endpoint vertices from lines

DuncanHornby — Tue, 24 Sep 2024 15:28:49 GMT

If you want to do this in model builder do this:

Extract all vertices
Extract start vertices
Extract end vertices
Use start vertices to select intersecting all vertices
Use end vertices to add to selection intersecting all vertices
Delete selection from all vertices.

This can very easily be done in modelbuilder.

Re: Extracting non-endpoint vertices from lines

DavidSolari — Thu, 26 Sep 2024 16:55:39 GMT

You can even do start & end in one pass, something like:

Re: Extracting non-endpoint vertices from lines

DuncanHornby — Fri, 27 Sep 2024 12:05:54 GMT

Fine tuned to perfection, nice! 🙂