Using the Select Source Geometry tool
When constructing or modifying route features, it is important to ensure that the updated alignment is correct and accurate. ArcGIS provides a number of tools for editing line geometry. Esri Roads and Highways provides tools for incorporating the updated line work into the linear referencing system (LRS).
Edits to geometry can also be made outside of ArcGIS as shapefiles and computer-aided design and drafting (CADD) files are supported in addition to ArcGIS feature classes. Source geometry features must be polyline features.
Source geometry is selected using the Select Source Geometry tool on the Roads And Highways Editing toolbar.
Source geometry features do not need to be M- or Z-enabled to work with Roads and Highways.
If your source geometry is a multipart line, you can use core ArcGIS geoprocessing tools to convert the multipart line to singlepart. See Multipart To Singlepart (Data Management). You may prefer to use a singlepart line if you want to flip the direction of the source geometry or reorder each individual part.
If you choose to work with 3D elevation data, the source geometry features support z-enablement. The vertices on your source geometry line features must have z-values to work with elevation. See Working with elevation data for more information.
- Start ArcMap and add an LRS Network and redline feature class to your map.
- Add the feature or feature layers you want to use for your source geometry.
- Start an edit session.
- Set a target LRS Network.
- Click the Select Source Geometry tool and select one or more features to use as the source geometry.
- Draw a bounding box to select multiple features.
- Press and hold the SHIFT key and draw a bounding box around one feature to select individual source geometry features and control the order of the features.
- Press and hold the ALT key and draw a bounding box around one feature to flip the direction of the source geometry.
You can select multiple features as the source geometry in the Create, Extend, or Realign Route activities. You can also integrate features from multiple sources such as CADD, shapefile, or feature class as your source geometry.
Pressing the SHIFT key lets you define the order of the source geometry. When selected individually, the source geometry is labeled in the order selected.
Pressing the ALT key lets you define the direction of the source geometry. This is helpful if you want to flip the current direction, for example, in a roundabout.
When drawing a bounding box around multiple features, the features are highlighted and labeled on the centroid of the feature. The labels may be assigned at random. To control the order of selection, press and hold the SHIFT key and draw a bounding box around individual features.