topic Fetch an attribute from underlying data layer in Field Maps in ArcGIS Field Maps Questions

Fetch an attribute from underlying data layer in Field Maps

AshlieHildebrand — Wed, 14 Aug 2024 17:14:10 GMT

I am trying to auto populate an attribute field in a layer in Field Maps forms using Arcade. I am placing a point on top of an existing point in Field Maps and I want to auto populate a field from the existing point layer to the feature I just created on top of it. I am using snapping, so they should be exact. I am using the following calculation in forms and it will return "Null" but not the attribute from the underlying layer, which is what I want.

What am I doing wrong.....I used the code from the "Common calculated expressions for ArcGIS Field Maps" document.

Re: Fetch an attribute from underlying data layer in Field Maps

KeizzyA — Fri, 16 Aug 2024 16:55:07 GMT

There could be a number of things but I would like to rule something out.

The second line what if you wrote it like this:

var SiteID = First(Intersects($feature, SiteIDs))

Hope it was that simple!

Re: Fetch an attribute from underlying data layer in Field Maps

AshlieHildebrand — Fri, 16 Aug 2024 20:09:40 GMT

Nope that didn't make a difference...

Update:

The below code works for a polygon feature that is the underlying feature but it gives me "No Data" for a point feature and I am using snapping. Thoughts....

var SiteIDs = FeatureSetByName($map,'Polygon Test',['SiteID'])

var SiteID = First(Intersects($feature, SiteIDs))

if (!IsEmpty(SiteID)) {

return SiteID['SiteID']

} else {

return "No Data"

}