For example, when I have a geometry change on a point, I would like to update the X and Y fields to the new current location, I understand how to make the code, but not where do I set or put it to be triggered/called

  • are you asking how to set a field to update automatically when the point is moved without having to run a stand alone script to update it or use a field calculator?
    – crld
    Commented Jun 21, 2016 at 21:11
  • looks like you can at least label the feature with dynamic text (support.esri.com/technical-article/000011568), and apparently arc 9.3 had this functionality (webhelp.esri.com/arcgisdesktop/9.3/…)
    – crld
    Commented Jun 21, 2016 at 21:19
  • 2
    We schedule our updates, rather than having them trigger on edit. Have scheduled tasks run once a day (usually at night) to perform automatic updates.
    – Midavalo
    Commented Jun 21, 2016 at 21:46

1 Answer 1


Use label expression:

def FindLabel ( [OID]  ):
  mxd = arcpy.mapping.MapDocument("CURRENT")
  with arcpy.da.UpdateCursor(lr, ('Shape@','POINT_X','POINT_Y'),r'"OID"='+str( [OID] )) as cursor:
      for row in cursor:
  return '%i\n%i' %(int(row[1]),int(row[2]))
  • Nice! Using an existing event saves wiring a new one. Trust me FeatureModified triggers are a pain to work with - updating the feature with the new X and Y triggers the event then you go cyclic from there, after you've solved that the update of the X and Y becomes the last action so the Undo buffer is increased by one and the user can Undo the update (BAD). The more I think about it the more I like this solution. Commented Jun 21, 2016 at 22:01
  • @MichaelMiles-Stimson this is just a slight modification to this answer to your Q gis.stackexchange.com/questions/124398/…
    – FelixIP
    Commented Jun 21, 2016 at 22:03

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