Replacing events

During roadway replacement, the events that were part of the replaced roadway can be left as is, retired, or retired and replaced using the Event Replacement widget.

The Event Replacement widget provides an interface to replace events in the database. You can also use referent offset data and stationing to add events to routes. The referent offset data is translated to routes and measures for storage.

Before performing event replacement, use the Configure Event Replacement widget to configure the events that can be retired, replaced, or left as is. For more information, see Configuring event replacement.

For this workflow example, you’ll use the event replacement configuration shown in the following image:

An example event replacement configuration for point and line events.

All line events and point events available in the map service are listed in the Available Event Layers list before configuration.

The following are the three event replacement outcomes for events in the map service:

• The events in the Available Event Layers list (section 1 in the previous image) will be left as is.
• The events in the Retire Events list (section 2 in the previous image) will be retired using the date provided in the Event Replacement widget. Retirement is valid for both point and line events.
• The events in the Retire and Replace Events list (section 3 in the previous image) will be retired and created anew using the dates provided in the Event Replacement widget. Only line events can be retired and replaced.

Note:

The events in the three sections of the Configure Event Replacement widget are exclusive.

Use the following steps to replace events:

1. Open Event Editor and, if prompted, sign in to Portal for ArcGIS or ArcGIS Online.
2. Click the Edit tab.
3. In the Edit Events group, click the Event Replacement button .

   The Event Replacement widget appears.

   

4. Click the Network drop-down arrow and choose the network that will serve as a source LRM for defining the input measures for the events that will be retired or replaced.

   Note:

   The network is an LRS Network published as a layer in Event Editor. You can specify the LRS Network to be used as the LRM for defining the start and end measures of the new linear event or for the events to be retired. Event Editor also accepts measures in a network other than the one with which the linear event layer is associated.

5. Choose the Route ID where the replacement's From measure will be located using any of these options:
   • Type the value in the Route ID text box.
   • Click the Select a Route on the Map button to select the route on the map.

   Note:

   If the selected route is not in the active view of the map, click the Zoom to the route extent or center on the route start or end point on the Map button to refresh the map display to zoom in to the entire extent of the selection.
6. In the From section, click the Method drop-down arrow and choose the first option (with the suffix Network).

   Note:

   You can use a combination of any of the following methods to locate the From measure and To measure. For example, you can use the Select a Location on the Map tool to choose the From measure value, and use the reference offset from an intersection to define the To Measure value along the route on the map.

   The methods to locate the From and To measures are the same as those available for the Add Line Events and Add Point Events widgets.

   Methods for locating the measures

   Method	Description	Additional feature classes needed in the map service	Additional information
   Route and measure	The measure is located based on the measure values from the chosen route.	None	Adding linear events by route and measure
   Intersection offset	The measure is located at an offset distance from an intersection at a chosen route.	Intersection layer registered with the chosen network.	Adding linear events by intersection offset
   Point offset	The measure is located at an offset distance from a point event located at a chosen route	Point event registered with the chosen network.	Adding linear events by point event offset
   Creating a starting station, then offset	A temporary engineering station is created on a route with a station value. The measure is located at an offset distance (using a station value) from the station.	None	Adding linear events by creating a starting station and then offset
   Identifying a starting station, then offset	A starting or base station is identified from the stationing points on the map. The start or end of the event is located at an offset distance (using a station value) from the base station.	Stationing event registered with the chosen network.	Adding linear events by identifying a starting station and then offset
   Adding linear events by coordinate location	The measure is located at an offset distance from a coordinate location	None	Adding linear events by coordinate location
   Stationing with equation points	The measure is located at an offset distance (using a station value) from an existing engineering station that has a station equation.	Stationing event registered with the chosen network.	Adding linear events using preexisting stations on the route
   Length	Only available to locate the To measure value. The measure is located at an offset distance from the From measure location.	None	Adding linear events using an offset from the From measure location

7. Choose the From measure for the event replacement along the route using any of the following options:
   • Type the value in the Measure text box.
   • Click the Select a Location on the Map button to select the From measure value along the route on the map.
   • Click the Measure drop-down arrow to select either Use the Route Start or Use the Route End as the From measure value for the event.

   Tip:

   If you type the From measure value, you can choose the unit for that value using the drop-down arrow. The From measure value will be converted to LRS units before saving the newly added events. For example, the LRS is in miles and you typed 5280 feet as the From measure value. The newly added events will have a From measure value of 1 mile, because 5280 feet equals 1 mile.

   A green plus symbol appears at the selected location on the map.

8. Choose the To method by clicking the Method drop-down arrow.

   Note:

   Refer to the Methods for locating the measures table in step 6 to determine which To section method to use with the From section method.

9. Choose the To measure for the event replacement along the route using any of the following options:
   • Type the value in the Measure text box.
   • Click the Select a Location on the Map button to select the To measure value along the route on the map.
   • Click the Measure drop-down arrow to select either Use the Route Start or Use the Route End as the To measure value for the event.

   A red cross symbol appears at the selected location on the map.

   Note:

   The events located between the From measure and To measure will be as follows:

   • Retired—The events in the Retire Events list (section 2 in the example event replacement configuration image)
   • Retired and re-created—The events in the Retire and Replace Events list (section 3 in the example event replacement configuration image)

10. Use one of the following to choose the date that will define the start date of the events that are replaced.
    • Click the Start Date drop-down arrow to choose the start date using a calendar.
    • Type the date in the Start Date text box.

    Note:

    The start date will be used as follows:

    • Retirement Date—For events in the Retire Events list (section 2 in the example event replacement configuration image)
    • Retirement Date—For events in the Retire and Replace Events list (section 3 in the example event replacement configuration image)
    • Start Date—For the replacement events in the Retire and Replace Events list (section 3 in the example event replacement configuration image)

11. Choose the date that will define the end date of the events that are replaced.
    • Click the End Date drop-down arrow to choose the end date using a calendar.
    • Type the date in the End Date text box.

    Note:

    The end date will be used as the end date for the replacement events in the Retire and Replace list (section 3 in the example event replacement configuration image).

12. Click Next.

    The tab showing the attribute fields for the replacement events appears.

    

    Event Replacement attributes are editable.

    Note:

    The Save button appears instead of Next if there are no events configured to replace. Clicking Save will retire the events for the chosen route measures and time.

    If no events are configured to retire or retire and replace, a message appears indicating there's nothing to retire or replace when you click Save.

    For more information, see Configuring event replacement.

13. Type the attribute information for the new events in the tables defined by attribute sets.

    Tip:

    You can use the Copy Attribute Values tool to copy event attributes from another route. Click the tool and click a route on the map to copy the event attributes.

14. Click Save on the Attribute tab to complete the event replacement for the specified route or route segment.

    • The events in the Retire Events list (section 2 in the example event replacement configuration image) are retired.
    • The events in the Retire and Replace Events list (section 3 in the example event replacement configuration image) are retired, created anew, and displayed on the map.