Using the Identify LRS Route Locations tool

The Identify LRS Route Locations tool is accessible from the Roads And Highways Editing toolbar and is used to discover measure value information from LRS Networks. You can use this tool to discover m-values from interpolated linear referencing methods (LRM) or offsets from referent locations. See Advanced linear referencing—Multiple linear referencing methods to learn more about LRMs.

Clicking the Identify LRS Route Locations tool and clicking a map location displays the Identify LRS Route Locations dialog box. This dialog box shows information about the route features available in the map.

Feature	Description
Layer filter	Allows you to view information about a single route layer.
Layer list	Shows a list of all available route layers in the map. This includes polyline shapefiles and feature classes as well as LRS Network layers.
Options button	Allows you to set referent offsets.
NetworkId	The name of the LRS Network, if applicable.
RouteId	The unique identifier of the route feature at the target map location.
Measure	The measure value of the route feature at the target map location.
Min	The minimum measure value of the route feature at the target map location.
Max	The maximum measure value of the route feature at the target map location.
Length	The total length of the route.*

Note:

* The total length of the route may not be the same as the difference between Min and Max.

You can set referent offsets by clicking Options. The Options dialog box also lets you set the number of decimal places you want to see in your measure values.

Steps:

1. Start ArcMap and add an LRS Network to your map.
2. Click the Identify LRS Route Locations tool and click a location on your map.
3. Choose an LRS Network layer in the Layers column of the Identify LRS Route Locations dialog box.
4. Right-click the route layer to find out more information about it.

   View Measures from All Networks	Removes the layer filter
   Identify	Shows attribute information about the selected route
   Draw Route Location	Places a map marker at the selected location
   Flash Route Location	Flashes the selected location temporarily so you can see where you clicked
   Zoom to Route Location	Zooms the map to the selected location

5. Click Options to bring up the Options dialog box.
6. Use the Number of decimal digits drop-down menu to set the number of decimal places you would like to see on the Identify LRS Route Locations dialog box.
7. Check the Display Reference Offset check box to see route locations as a distance from a known location.
   1. Choose the referent with the Offset Layer drop-down menu.
   2. You can filter your referents by clicking the browse button next to Where Clause or typing an expression in the text box.

      Show referent offsets from traffic count sites that are currently active.