Arcade: Popups: FeatureSet by URL?

[AlfredBaldenweck]

Working on a popup. I'd like it to reference an item in a portal. Unfortunately, the item I want is a map image service, so while the service itself has an item id, the layers within do not. I can add the individual layers directly to my map using the REST URL, but I can't access them with Arcade, as best I can tell.

Is it possible to access a feature service using its URL, rather than portal id?

[ZachBodenner · Accepted solution]

You're very much on the right track. The function you want is FeaturesetByPortalItem, and then make sure to feed in the layer id parameter.

https://developers.arcgis.com/arcade/function-reference/portal_functions/#featuresetbyportalitem

So for example, if you had a feature/map layer that had Trees, Playgrounds, and Parks, and their layer ids were, respectively, [0], [1], and [2], and you wanted to access Parks, your function would read:

var parks = FeatureSetByPortalItem( Portal('<portal url>'), '<item ID>', 2);

edit: correct name of function.

[AlfredBaldenweck]

Ah, the layer item parameter was what I was missing.

I was expecting to use like, itemID/indexnumber or itemID&sublayer=indexnumber.

Thanks!