Attribute Rule Arcade Intersect and Copy Attribute from Feature A to B Error: Indexable type expected

Ed_ — Wed, 18 Sep 2024 21:49:48 GMT

Hello all,

Hope all is well, so i need some Arcade help 🙂

Let's say I have a point feature class which is empty and will be digitized via Field Maps.
The map will also contain a polygon layer ,and one of its attribute is say "attribute_ABC" and has values.
The point layer will also have attribute "attribute_ABC" which would initially be empty, so i am trying to create an attribute rule for it.
whenever the point intersects the polygon layer, it copies the respective attribute_ABC value from the polygon layer to the point layer attribute_ABC.
Basically the idea is to auto populate some of the attributes of the point feature class from other existing layers based on their intersection.

So I finally got the code working to the point that code block says that "Expression is valid" but when I try to add a point to the map, I get the following error

Error:

Failed to create Pt. Failed to evaluate Arcade expression. [ Rule name: Poly, Triggering event: Insert, Class name: Pt, GlobalID: {4E52CA0C-099D-4593-80AF-292A5CFE51CF}, Arcade error: Indexable type expected, Script line: 11]

Code:

// Read the polygon layer var poly = FeatureSetByName($datastore, "poly"); // Intersect var int = Intersects(poly, $feature); // Check if there is an intersection if (Count(int) > 0) { // Get the first intersecting polygon's ABC value var firstPoly = First(int); return int.ABC; } else { // if there's no intersection then retain the original ABC value or return null return $feature.ABC; }

PS the map is being created in Pro 3.3.1 which will then published to AGOL and then that map will be used in Field Maps.

Re: Attribute Rule Arcade Intersect and Copy Attribute from Feature A to B

Ed_ — Wed, 18 Sep 2024 21:24:19 GMT

@jcarlson @KenBuja @XanderBakker can any of you you please help?

Re: Attribute Rule Arcade Intersect and Copy Attribute from Feature A to B Error: Indexable type expected

KenBuja — Thu, 19 Sep 2024 13:00:17 GMT

Line 10 should be

return firstPoly.ABC;

Re: Attribute Rule Arcade Intersect and Copy Attribute from Feature A to B Error: Indexable type expected

Ed_ — Thu, 19 Sep 2024 14:57:35 GMT

Good morning Ken, hope all is well 🙂

Yup that did it, thank you so much and have a great day!

topic Re: Attribute Rule Arcade Intersect and Copy Attribute from Feature A to B Error: Indexable type expected in ArcGIS Pro Questions

Attribute Rule Arcade Intersect and Copy Attribute from Feature A to B Error: Indexable type expected

Re: Attribute Rule Arcade Intersect and Copy Attribute from Feature A to B

Re: Attribute Rule Arcade Intersect and Copy Attribute from Feature A to B Error: Indexable type expected

Re: Attribute Rule Arcade Intersect and Copy Attribute from Feature A to B Error: Indexable type expected