topic Re: field enrichment of multiple attributes based on a spatial query? in ArcGIS GeoEvent Server Questions

field enrichment of multiple attributes based on a spatial query?

BenNadler — Fri, 20 Nov 2015 17:31:16 GMT

what is the recommended service configuration for populating existing fields in a geoEvent based on location?

From the ootb processors I see geofencing + GeoTag+Table Join as the only method. Kinda clunky

Scenario:

I have 2 spatially dependant attributes that exist in the schema but are blank in the incoming geoevent (District,DistrictSupervisor) and want

I would have to first load districts as geofences (possibly many thousands)

Then I have to GeoTag to get the geofence name, then do a separate Join to get the DistrictSupervisor.

Ideally I am looking for a processor that queries a FS layer or shapefile by the location of the geoEvent and populate one or more attributes in the same manner as the join.

Is this something we have sitting around somewhere?

Why is this not a standard processor?

Re: field enrichment of multiple attributes based on a spatial query?

RJSunderman — Sat, 23 Jan 2016 00:28:38 GMT

Hello Ben -

My apologies that your question went so long without an answer or reply.

To the best of my knowledge, GeoEvent does not do anything with Shapefiles, and there is no out-of-the-box processor which will query a map service / feature service based on spatial criteria. The Field Enricher processor is the closest match, and as you know, it only accepts a field on which an attribute join can be performed. Therefore the only workflow available, out-of-the-box, for enriching an event with attribute information from a database table based on spatial coincidence with a Geometry is the one you've used: Load GeoFences, use a GeoTagger processor to determine spatial coincidence (and enrich with the name of a GeoFence), then use a Field Enricher processor to complete the enrichment by performing an attribute join and loading attribute values associated with the GeoFence into the event being processed.

The product team has an issue open in the product backlog ("Allow imported GeoFences to contain both attributes and geometry - Issue #564"). Implementation on this has been deferred because GeoFences, by design, are intentionally light-weight. They are maintained in memory for fast geometric comparisons. There are significant consequences to loading all of the attributes associated with a Geometry into GeoEvent as GeoFence attributes.

I will ask around to see if there is any other advice to offer you, but I think in this case the workflow is by design. A custom processor which provides an event's Geometry to a feature service in order to perform a spatial join is not something I think is being considered.

Esri Technical Support can help you open a case to request product enhancements. If we can get several customers behind a case it will help prioritize the enhancement within the product backlog.

Hope this information is helpful -

Re: field enrichment of multiple attributes based on a spatial query?

BenNadler — Sat, 30 Jan 2016 16:46:03 GMT

A custom processor is ideal. Preferable to modifying geofence functionality. I may look at a workflow solution for this, or perhaps build it out in my spare time 😉

Re: field enrichment of multiple attributes based on a spatial query?

CassidyKillian — Mon, 11 Dec 2017 20:43:46 GMT

RJ Sunderman‌

RJ,

I came across this thread looking for a solution to a question I asked in another thread here:

How to update an attribute of a feature based on a geoevent

I think this sounds like a similar issue. Has there been any updates to this workflow, or can you suggest a workflow for updating the attribute of an underlying polygon?

Thanks!

Re: field enrichment of multiple attributes based on a spatial query?

RJSunderman — Tue, 12 Dec 2017 22:15:59 GMT

Hello Cassidy --

What I think Ben Nadler was originally asking in his post field enrichment of multiple attributes based on a spatial query? is not what you are looking for. If I understand your question, you want to detect when at least two assets are within a work area and update a feature attribute which allows that area to be displayed as "cleared".

In any case, the workflow described in that thread -- use a GeoTagger to obtain an attribute value that can be used as a primary join field, then a Field Enricher to enrich an event record with attribute (or geometry) from a feature record -- is still your only way to detect spatial coincidence and enrich event records with related feature records. The functionality Ben is asking for, a processor that can perform a spatial join, has not been implemented.

I'll reply to your original question, https://community.esri.com/message/727624-how-to-update-an-attribute-of-a-feature-based-on-a-geoevent?sr=search&searchId=19c59ece-a985-4d7d-83db-5e889b5e1520&searchIndex=3‌ as part of its thread.

-- RJ