To Split Or Not To Split…The Line?

A common validation rule is to check if a point feature splits the line it is connected to. This is essential for proper network analysis. For example,

  • Electric utility – switch must split primary conductor
  • Water utility – valve must split water main
  • Transportation – bridge must split the road

Do you have a similar rule for your GIS? You can validate it using Data Reviewer’s Geometry on Geometry check.

Let’s take the water utility example from above. I’ve used the local government water utilities editing template to illustrate the valve must split water main business rule.

  1. In the Geometry on Geometry Check Properties dialog, select wSystemValve (point features) for Feature Class 1.
  2. For Feature Class 2, select wMain (line features).
  3.  For Spatial Relation Check Type, select Touches.
  4.  Check on the Not – find features not in this relationship option.
  5.  Optionally, you can populate the Check Title, Notes, and Severity in the Geometry on Geometry Check Properties dialog.

Do you need to apply this business rule for your industry?  Leave a comment and tell us what that rule is.

Happy validating!

Content contributed by Michelle Johnson

This entry was posted in Editing, Electric & Gas, Local Government, Transportation, Water Utilities and tagged . Bookmark the permalink.

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2 Comments

  1. jupitergis says:

    Hi,
    We’ve used the geometric capabilities with our water distribution network for years. As many valves are close to tees, and other valid reasons, we go with just vertexes to snap most of our valves to. Valve isolation traces have always worked, with the use of complex features when building the network. Is the use of complex features for valves not supported moving forward?

  2. DataReviewerTeam says:

    Valve isolation trace will work fine whether you split the main at the valve location or not. However, for other applications such as hydraulic modeling software, there may be a requirement to split the mains at junctions like normally closed valves, pressure zone valves, reducer fittings, etc.