Creating Network Dataset in ArcGis Pro. Junction fail to be created with edge.

[RogerYLearnGIS]

Hi, I'm trying to create a simple network dataset in Arcgis Pro. I'm running into an issue. The dataset i'm using has no elevation information and assumed to be a flat polyline network.  When I'm creating the network dataset, I have selected No Elevation. The process will run and will create a Edge for ND, but the Junction attributes has no information, No Junctions were created in the process. I ran a few different scenario but every time no Junction were created. Please let me know if anyone has an answer to this. 

[MelindaMorang]

Hi.

Can you provide some more details about your workflow?

• Are you using the Create Network Dataset tool, or are you doing some other procedure? Please describe.
• When you say "The process will run and will create a Edge for ND, but the Junction attributes has no information, No Junctions were created in the process.", what "process" are you referring to? Do you mean you ran the Build Network tool, and it didn't create any junctions? Or something else?

[RogerYLearnGIS]

Hi thanks for helping me with this question. The tool i been using is the
"Create Network Dataset" tool, I'm using ArcGIS Pro 2.7.1

[MelindaMorang]

Okay. I think I understand where the confusion is coming from.

The Create Network Dataset tool just creates the network dataset with some default properties and using the data you provide as sources. The network dataset isn't ready to use at this point. You need to update any of the properties (like adding restrictions or configuring Directions or whatever), and then you need to run the Build Network tool. Build Network takes all the input data and all the properties and cooks it all together into a usable network dataset. At this point, it will auto-generate junctions at the points where edges are connected to each other.

[RogerYLearnGIS]

I just want to confirm that the "Create Network Dataset Tool' should
produce two outputs correct? one is the Edge and the other Junctions.
My issue is that it doesn't create any junctions at the endpoint of each
line segment or where the line connects or intersects.

[MelindaMorang]

No, the Create Network Dataset tool creates a network dataset, which is a specific type of object. That is the only output of the Create Network Dataset tool.

The network dataset contains a set of properties you can configure, and internally it tracks edges, junctions, and turns. However, these edges, junctions, and turns are drawn from separate feature classes. You can specify your own junctions if you have them, but if you don't, when you run Build Network, it will automatically generate junctions at locations where the network edges are connected to each other.