topic Re: Returning attributes from another layer via Arcade intersect? in ArcGIS Online Questions

Returning attributes from another layer via Arcade intersect?

DaveK — Wed, 19 Jul 2023 13:42:07 GMT

Hello!

I'm creating an Acrade expression that will allow me to return attribute information from another layer via an intersect. In this case wetland information will be returned when a parcel is clicked on. My current expression works but I cant seem to figure out how to return text that says "No Wetland" when there is no intersecting wetland. Any help is appreciated.

Arcade Expression:

var points =FeatureSetByName($map,"WetlandsLayer"); var countp = Intersects(points,$feature); var result = ""; for (var item in countp){ var id = item["LABEL12"]; result += id + ' ' } return result

Thanks!

Re: Returning attributes from another layer via Arcade intersect?

jcarlson — Wed, 19 Jul 2023 14:10:46 GMT

Easy enough! You can check to see how many features are in the intersection, and return a different value when it's 0.

var points =FeatureSetByName($map,"WetlandsLayer"); var countp = Intersects(points,$feature); if (Count(countp) < 1) { return 'No Wetlands' } var result = ""; for (var item in countp){ var id = item["LABEL12"]; result += id + ' ' } return result

Re: Returning attributes from another layer via Arcade intersect?

drWood — Wed, 19 Jul 2023 20:36:27 GMT

The below code is what I recently put together to achieve the same outcome with use of an Attribute Rule. Josh's suggestion is also valid.

var basins = FeatureSetByName ($datastore, "Watersheds_2017", ["WATERSHED_CODE"],true); var matchedBasin = First(Intersects(basins, Geometry($feature))); if(matchedBasin == null) {return null} else {return matchedBasin.WATERSHED_CODE};