topic Re: create attribute rules to copy a field value from intersecting polygon in ArcGIS Pro Questions

create attribute rules to copy a field value from intersecting polygon

kazzie — Wed, 09 Nov 2022 21:35:32 GMT

I'm trying to create an arcade intersect expression for attribute rule in arcgis pro which will populate the attribute field 'Habitat_SiteName' in my Habitat_Patches layer when I create new polygons. The underlying polygon field name in the Habitat_Polygons layer is 'SiteName', within a file geodatabase.

Feature class 1: Habitat_Patches

Feature class 2: Habitat_Polygons

Triggers I would like to use are Insert and update.

Re: create attribute rules to copy a field value from intersecting polygon

JohannesLindner — Thu, 10 Nov 2022 06:41:33 GMT

// load the habitat polygons var habitats = FeaturesetByName($datastore, "Habitat_Polygons") // get the first intersecting habitat var habitat = First(Intersects(habitats, $feature)) // no intersecting habitat? -> abort if(habitat == null) { return null } // else return the habitat's site name return habitat.SiteName

Re: create attribute rules to copy a field value from intersecting polygon

kazzie — Thu, 10 Nov 2022 10:18:11 GMT

Thanks Johannes, that worked a treat. sorry another question im trying to get my head around arcade. How would it work if you had multiple fields to copy.

Re: create attribute rules to copy a field value from intersecting polygon

JohannesLindner — Thu, 10 Nov 2022 11:37:41 GMT

In that case, you would leave the field parameter empty and return a dictionary instead of a value.

var habitats = FeaturesetByName($datastore, "Habitat_Polygons") var habitat = First(Intersects(habitats, $feature)) if(habitat == null) { return null } return { "result": { "attributes": { "Field1": habitat.Field1, "Field2": habitat.Field2 }} }

Re: create attribute rules to copy a field value from intersecting polygon

kazzie — Thu, 10 Nov 2022 14:07:35 GMT

Thanks again Johannes, the link was really helpful and will have a play with the other options.

Have a great day too

Kazzie