Snapping

[SLouq]

I have a question about snapping.  

I am working with line features and notice the vertexes of my lines are not snapping to the edges of lines they are intersecting with even though I have edge snapping turned on. The embedded image shows how they are not snapping. Can someone show me what snapping tool has to be on in the snapping settings?

Thanks

[Scott_Harris · Accepted solution]

@SLouq Is it possible that you are zooming in beyond 1:1 for map scale?

[SLouq]

How can you zoom in beyond 1:1? I just zoomed in as much as it would let me. 

I was always under the impression when snapping is on, you should see no gap between the lines

ETA: You are right. I just looked at it again and I see now how you can go past 1:1 with the zoom. 

[Scott_Harris · Accepted solution]

Yes zooming in beyond 1:1 is allowed, but the distances represented in the gap are most likely negligible and within the XY Tolerance of the data. Feel free to contact Esri Technical Support if you need help verifying.

[GISAdminSHN]

@Scott_Harris I'd like some further clarification on why snapping would not place the new vertex at a location on the edge being snapped to, using the XY tolerance of that edge's dataset. In using a snap, the user is asserting their intent to be "topologically pure", snap should respect the intent of the user.

Also, there should be a help document that discusses the relationships between map unit precision settings, snap settings, and XY Tolerance settings of the common "snappable" feature dataset filetypes. It should include guidance on which settings to employ in typical use cases (high-accuracy, moderate-accuracy, low-accuracy), where those settings are found, and anything that overrides or hinders the use or modification of the settings. Feel free to use this thread and it's followers as a guinea pig if you'd like to post the rough draft here! 😄