Creating an LRS Network

Each LRS Network is created by combining centerline features with route definitions and attributes. Calibration points are used to apply the measures to the routes in the LRS Network. Centerlines and calibration points are registered with the LRS when it is created. The next step is to create your LRS Network. The network feature class can be modeled in advance or created when you create your LRS Network. The steps to create your first LRS Network using both workflows are listed below.

To create an LRS Derived Network, you can also use the LRS Network wizard.

Create an LRS Network with the create feature class option

If your network feature class has not been created in advance, the Create new LRS Network wizard can create it while simultaneously registering the network with the LRS. Follow the steps below to create the network feature class while registering it with the LRS.

1. Start ArcMap.
2. Browse to the target geodatabase in the Catalog window.
3. Right-click the LRS in the target geodatabase and click New > LRS Network.

   If you clicked Yes on the Do you wish to create a new Network? dialog box after creating an LRS, the Create new LRS Network wizard appears.

   

4. Choose the Create a new feature class option.

   Note:

   If the network feature class is already present in the geodatabase with the LRS, follow the steps in the Create an LRS Network using an existing feature class section.

5. Give the new network a name by typing a name in the Feature class name text box and an alias by typing an alias in the Feature class alias text box.
6. Click the Unit of measure drop-down arrow and choose the unit of measure for the network.

   You can choose a different unit of measure for your network than your source polyline route feature class unit of measure. During the update calibration points step of the creation process, you can specify the unit of measure for the source polyline route feature class, and the measures will automatically be converted.

7. Click the Tolerance and Resolution button to view the tolerance properties.

   

   Note:

   These properties are read-only as they are inherited from the centerline feature class. Keeping the tolerance settings the same for the centerline feature class and network feature class ensures routes and measures stay in alignment in ArcGIS Pipeline Referencing.

8. Click Close.

   The General Network Properties appear.

   

9. Click Next.
   
10. If the network will support lines, check the Include columns to support route lines check box.

    The line fields appear in the table of fields in the network.

    

11. Populate the Field Name for the fields in the network feature class.

    Note:

    Default names are provided for the fields, but they can be changed by selecting the cell and typing the new field name.

12. Click Next.

    The LRS Network is created.

    

13. Click Finish to exit the wizard. Click Yes on the Do you wish to load routes? dialog box to load routes, or click No to return to ArcMap.

    

Create an LRS Network using an existing feature class

The network feature class can be created in advance of registering the network with the LRS. In Pipeline Referencing, the spatial reference, tolerance, and resolution settings for the network feature class must align with those of the centerline feature class. The m tolerance and resolution of the network feature class will be determined based on the spatial reference of the centerline feature class, the x,y tolerance and resolution of the centerline feature class, and the desired LRM units of measure. For more information on determining the tolerance and resolution for the network feature class, see LRS data model. Once the spatial reference, tolerance, and resolution are verified to be in alignment with the centerline feature class, follow the steps below to register the LRS Network.

1. Start ArcMap.
2. Browse to the target geodatabase in the Catalog window.
3. Right-click the LRS in the target geodatabase and click New > LRS Network.

   If you clicked Yes on the Do you wish to create a new Network? dialog box after creating an LRS, the Create new LRS Network wizard appears.

4. Choose the Use an existing feature class option.

   Note:

   If the network feature class has not been created, follow the steps in the previous section with the Create a new feature class option.

   

5. Click the browse button to browse to and select your network feature class in your geodatabase.
6. Give the network an alias by typing an alias in the Feature class alias text box.
7. Click the Unit of measure drop-down arrow and choose the unit of measure for the network.

   You can choose a different unit of measure for your network than your source polyline route feature class unit of measure. During the update calibration points step of the creation process, you can specify the unit of measure for the source polyline route feature class, and the measures will automatically be converted.

8. Click the Tolerance and Resolution box to view the tolerance properties.

   

   Note:

   These properties are read-only as they are inherited from the centerline feature class. Keeping the tolerance settings the same for the centerline feature class and network feature class ensures routes and measures stay in alignment in Pipeline Referencing.

9. Click Close.
10. Click Next.
11. If the network will support lines, check the Include columns to support route lines check box.

    The line fields appear in the table of fields in the network.

    
12. Map the network feature class fields in the Field Name columns using the drop-down arrows.
13. Click Next.

    The LRS Network is created.

    

14. Click Finish to exit the wizard.
15. Click Yes on the Do you wish to load routes? dialog box to load routes, or click No to return to ArcMap.