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Merging events

You can merge two or more line events using the Merge Events tool available in the Event Editor or through the attribute table.

Merging events with the Merge Events tool

Upon successful execution, the Merge Events tool merges multiple adjoining events into an existing target event. All the input events, except the target event, retire. The merged event acquires the lowest value from the From Measure field and highest value of the To Measure field from the input events by default. If a gap exists between the input events, the gap is bridged in the merged event. You can edit the attributes of the merged layer prior to committing the merge.

Merging events

In the following image, if two events are merging and the From Measure of the starting event (EventId A) and the To Measure of the ending event (EventId B) have referent offset values, the resulting merged event (event A) will retain the referent offset values as its From Measure and To Measure.

Merging events with referent offset values

Use the following steps to merge events in the Event Editor.

  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 Merge Events button Merge Events.

    The Merge Events widget appears.

  4. Select the events on the map by drawing a bounding box.

    The events to be merged belong to the event layer selected in the Layer drop-down list.

    The Merge Events widget appears.

    Merge Events widget

    The event's attribute table opens at the bottom with the selected events highlighted in green.

    Event attribute table

    The participating events's EventID is listed in the Target Event drop-down list.

    Choosing the Target Event

  5. Optionally change the From Measure, To Measure, Start Date, and End Date values.

    The start date defaults to today's date. All the records highlighted in green will be merged to the target event.

  6. Optionally edit the characteristic attributes in the table.

    The attributes are from the Target Event by default.

    Note:

    Coded value, range domains, and subtypes are supported when configured for any field in the Attribute-Value table.

  7. Click Save to merge the records.

    A confirmation message appears at the lower right once the edited event is saved.

Merging events from the attribute table

You can also merge events using the records present in the attribute table using the following steps.

  1. Select events using selection tools such as Select by Route, Select by Polygon, Select by attributes, and so forth.

    The attribute table opens with the results.

    Event attribute table

  2. Highlight the events you want to merge by clicking them in the table and pressing and holding the Shift key.

    The selected rows are highlighted in blue.

  3. Click the Merge Events button Merge Events.
    1. The events records to be merged are highlighted in green.
      Merging events from the attribute table
    2. The Merge Events dialog box appears.
      Merge Events dialog box
  4. Optionally change the From Measure, To Measure, Start Date, and End Date values.

    The start date defaults to today's date. All the records highlighted in green will be merged to the target event.

  5. Optionally edit the characteristic attributes in the table.

    The attributes are from the Target Event by default.

    Note:

    Coded value, range domains, and subtypes are supported when configured for any field in the Attribute-Value table.

  6. Click Save to merge the records.

    A confirmation message appears at the lower right once the edited event is saved.