Spatial filter - Different Geofences depending on a field

DavidVial — Wed, 05 Feb 2014 14:36:52 GMT

Hi,

I would like to associate a different geofence for each feature I have in Input.
Is there a way to match input features and geofences with an ID (so the alert only happen with the geofences assiociated to the feature)?
Or is it possible, when we create a spatial condition (for a filter or an incident detection), to select the geofence in function of an input feature's field value?

Thanks,

David

Re: Spatial filter - Different Geofences depending on a field

RJSunderman — Thu, 06 Feb 2014 00:10:40 GMT

Hello David -

I'd like to make sure I understand your question or scenario. You would like the ability to configure a filter element with an expression similar to GEOMETRY OUTSIDE FlightZones/${ZoneID} rather than naming a specific GeoFence such as GEOMETRY OUTSIDE FlightZones/ZoneA.

This isn't supported in the current release. The spatial expression for a filter element (or Incident Detector processor element) will not substitute a value (e.g. an attribute value) for a variable (e.g. the name of an event field) on-the-fly as the expression is evaluated by the filter / processor when an event is received. The spatial expression must include the GeoFence category and a GeoFence name. Regular expression patterns are accepted, so an expression such as GEOMETRY OUTSIDE FlightZones/.* is valid.

What you can do, at the 10.2.1 release, is combine a GeoTagger with a Filter in order to generate an alert when an asset is tagged outside of its assigned zone. For example, if you configured a GeoTagger processor to enrich events with just the name of the GeoFence they are found INSIDE, you could then configure a filter which checked to see if the name of the asset's assigned zone did not match the name of the zone in which it was most recently tagged. Something like the attached illustration. (Notice that I did not include the name of the GeoFence Category in the GeoTagger's enrichment, so I can use variable-substitution to compare the value from the field ZoneID (where the flight is supposed to be) with the value in the GeoTag field TaggedInZone.

Hope this helps -
RJ

Re: Spatial filter - Different Geofences depending on a field

DavidVial — Mon, 24 Feb 2014 08:16:59 GMT

Hello RJ,

Thank you for the answer.
This is what I needed.

David

topic Re: Spatial filter - Different Geofences depending on a field in ArcGIS GeoEvent Server Questions

Spatial filter - Different Geofences depending on a field

Re: Spatial filter - Different Geofences depending on a field

Re: Spatial filter - Different Geofences depending on a field