What you've got is a good start. In order to other features associated with the intersected boundary, you'll need to interact with that boundary feature directly.
While using a for loop like that does work, it's not the best approach when you know that you've only got a single intersected feature to work with. Consider instead using First, which will take the top record of a FeatureSet and return it as a feature object.
Once you have your catchment, you can use one of its attributes to Filter the associated table. And then once you have the nursery schools, you need some way of taking values out of that FeatureSet and returning them. I've made a few assumptions about layer names and whatnot, but here's what an expression might look like.
var catchments = FeatureSetByName($map, 'School Catchment Areas')
var nursery_schools = FeatureSetByName($map, 'Nursery Schools')
// get the first intersecting catchment
var the_catchment = First(Instersects(catchments, $feature))
// filter nursery schools
var matching_schools = Filter(nursery_schools, `catchment_id = '${the_catchment['id']}'`)
// create array of nursery school names
var schools = []
for (var s in matching_schools){
Push(schools, s['name'])
}
// concatenate array items with newline characters
return Concatenate(schools, '\n')
- Josh Carlson
Kendall County GIS
