Arcade Error: Dictionary Type Expected

JoshSaad1

I wrote an Arcade expression to calculate the zip code of an address point from its intersecting zip code polygon, and it works just fine: 

var fsZip = FeatureSetByName($datastore, "ZipCodes", ["Zip_Code"])
var fsZipIntersect = Intersects(fsZip, $feature)
var zip = First(fsZipIntersect)

return zip.Zip_Code

I use a similar expression to calculate the municipality from the zip codes feature class with no problems:

var fsZip = FeatureSetByName($datastore, "ZipCodes", ["PO_NAME"])
var fsZipIntersect = Intersects(fsZip, $feature)
var city = First(fsZipIntersect)

return city.PO_NAME

But when I try to do essentially the same process to calculate the intersecting neighborhood or building footprint I get an error, "Dictionary Type Expected".

var fsBuilding = FeatureSetByName($datastore, "BuildingFootprint", ["bldngid"]
var fsBuildingIntersect = Intersects(fsBuilding, $feature)
var Building = First(fsBuildingIntersect)

return Building.bldngid

var fsNeighborhood = FeatureSetByName($datastore, "Neighborhood", ["nbrhdid"])
var fsNeighborhoodIntersect = Intersects(fsNeighborhood, $feature)
var Neighborhood = First(fsNeighborhoodIntersect)

return Neighborhood.nbrhdid

All of my feature classes are in the same file geodatabase that I'm using for testing, so they're all in the same data store.  Does anyone know why this might be happening?

XanderBakker

Hi Josh Saad ,

I don't think it is what is causing the error, but the line:

var fsBuilding = FeatureSetByName($datastore, "BuildingFootprint", ["bldngid"]

... is missing a bracket at the end of the line.

I also notice that you don't check if the Intersects is returning any results. In theory it could result a featureset with 0 features and when you apply First on that, this would cause an error (although I think a different one).

I assume you are using the exact names of how these items are named in your FGBD ($datastore), right?

Have you tried with writing messages to the Console on which line this error is occurring and to check that the items used are valid and the expression has access to them?