Calculating Start and End Elevations For Line Segments

JWest1 — Tue, 08 Aug 2023 20:20:24 GMT

I am trying to generate elevation data along lines and I have followed the process below:

Vertices to Points for both start and end points and deleted fields that will not have any impact
Add Surface Information to calculate the z-value for the points based off my raster data
Added fields to my line feature for start and end z-values
Near to calculate the nearest line for both the start and end points

Here is where everything gets messed up. When I do my Join based on the IDs it locating both a start and an end point on the same line with the same distance and is throwing off the tool by giving me an identical elevation. It ends up with my section of 1 intersection of 3 lines looking like this:

Lines

OBJECTID	StartZ	EndZ	START_FID	END_FID
3	181.1	181.1	4	3
19	199.6	199.6	19	247
21	171.1	171.1	3	19

Start_Point

OBJECTID	ORIG_FID	StartZ
19	19	171.1

End_Point

OBJECTID	ORIG_FID	StartZ
3	3	171.1
21	3	171.1

So what I am seeing is that Line 21 is getting both its StartZ and EndZ from the same spatial location even though it should only be getting one or the other. How can I prevent this from happening?

Re: Calculating Start and End Elevations For Line Segments

JWest1 — Tue, 08 Aug 2023 20:34:39 GMT

Nevermind. Trying to use old tools to solve this when I can just calculate the z-values right in the field geometry calculation in the attribute table.

topic Re: Calculating Start and End Elevations For Line Segments in ArcGIS Pro Questions

Calculating Start and End Elevations For Line Segments

Re: Calculating Start and End Elevations For Line Segments