Frequently asked question

When using the editor toolbar merge command to combine overlapping/coincident features, how are unequal Z values handled?

Last Published: April 25, 2020

Answer

If the X and Y values are the same (vertices are coincidental) but the Z values are different, the larger Z value is always used in the output vertex. See the example workflow below:
Segment 1 of overlapping line feature (note the Z values)

[O-Image]

Segment 2 of overlapping line feature (note the Z values)

[O-Image]

Merging these segments, choosing segment 1

[O-Image]

Result keeps higher Z values

[O-Image]

Merging these segments, choosing segment 2

[O-Image]

Result keeps higher Z values

[O-Image]

Article ID:000011550

Software:
  • ArcMap

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