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Introduction to Event Editor

Event Editor is a map-centric web app that supports linear referenced event data editing. This app is included with ArcGIS Roads and Highways.


The 11.3 version of Event Editor will be the final release of the app. The app is built on JavaScript API version 3.x, which will be retired in July 2024. Previous versions of the app will continue to be available for download but will have limited support after July 2024. Most of the Event Editor capabilities will transition to Experience Builder widgets at the 11.3 release and later.

Event Editor features

The following are features of Event Editor:

  • Route search—Most event editing workflows are route centric, in which the first step of attributing the route is locating the route on the map.
  • Attribute set-based event attribution—Define groups of event layers and named attribute sets to provide attributes across multiple event layers in a single transaction for a from and to measure pair on a route. The event layers can also be stored and referenced in different linear referencing methods (LRMs). The web app takes care of route and measure translations across LRMs.
  • Quality-control checks—Run quality-control checks for a route to detect event data gaps, overlaps, and invalid measures, and then use the editing capabilities to correct those errors.
  • Event data queries and edits—Query for event data by its route association, by ad hoc queries, by spatial intersecting geometry, or by location proximity. Visualize, browse, and bulk edit the tabular results.
  • Route redline—Communicate required LRS modifications or discrepancies by marking up a route to communicate to the LRS data managers that a route needs to be created, extended, retired, realigned, or reassigned.

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  1. Event Editor features