Is it possible to create a point feature class for junctions using an SDC network dataset?

341
2
Jump to solution
07-31-2019 07:08 AM
YaseminAlgur
New Contributor

Hi, I'm working with an SDC network dataset contained in Data and Maps for ArcGIS (2013) I downloaded on MyEsri. I was under the impression that this prebuilt network dataset can be used for network analysis. However, when I load the dataset (street4.rs) and all the feature classes it contains, I'm only seeing Edges, and not Junctions. It contains a 'SDC Junction Source' but a junction feature class is missing.

I've realized that a network dataset needs to be 'built' in order to create 'a point feature class containing all the system junctions'. However, I also came across the following information:  'SDC-based network datasets cannot be built'. 

My goal is to compute intersection density using a network dataset (ideally a prebuilt one as I need to compute it for the entire contiguous US)

In light of all of this, I would like to know:

- Can I still somehow create junctions using this prebuilt network dataset to compute intersection density? 

- If the prebuilt network dataset cannot be built and used to establish connectivity, what are its capabilities/what is it good for? For example, can I use it to find & save the shortest distance between two destinations?

I'd appreciate any help, thank you!

0 Kudos
1 Solution

Accepted Solutions
JaySandhu
Esri Regular Contributor

The SDC is a highly compressed read-only format. So it is not possible to edit/re-build that network. 

If all you want to are intersection points, then one way could be create points at the start and end of each line. Use the GP tool Feature Vertices to Points with the option to write out both ends (for the streets.sdc file). More help here:

https://desktop.arcgis.com/en/arcmap/latest/tools/data-management-toolbox/feature-vertices-to-points...

This should account for most of the intersection points. Some will be duplicated and you could remove the duplicates with the GP Delete Identical tool.

Here are some links to previous discussion on intersections and SDC data that might come in handy.

https://www.esri.com/arcgis-blog/products/arcgis-desktop/analytics/more-adventures-in-overlay-creati...

https://community.esri.com/thread/21850

Regards,

Jay Sandhu

View solution in original post

2 Replies
JaySandhu
Esri Regular Contributor

The SDC is a highly compressed read-only format. So it is not possible to edit/re-build that network. 

If all you want to are intersection points, then one way could be create points at the start and end of each line. Use the GP tool Feature Vertices to Points with the option to write out both ends (for the streets.sdc file). More help here:

https://desktop.arcgis.com/en/arcmap/latest/tools/data-management-toolbox/feature-vertices-to-points...

This should account for most of the intersection points. Some will be duplicated and you could remove the duplicates with the GP Delete Identical tool.

Here are some links to previous discussion on intersections and SDC data that might come in handy.

https://www.esri.com/arcgis-blog/products/arcgis-desktop/analytics/more-adventures-in-overlay-creati...

https://community.esri.com/thread/21850

Regards,

Jay Sandhu

YaseminAlgur
New Contributor

Thank you!

0 Kudos