Arcade Expression works in Map Viewer but not Field Maps

[ChrisJRoss13]

I have an arcade expression that works perfectly fine in Map Viewer but when I access the map in Field Maps it always returns "No closest weather station was found within the search distance".

Any help on why this is would be greatly appreciated.

The expression is below:

var searchDistance = 50; // Search distance in kilometers

var weatherStations = FeatureSetByPortalItem(Portal('https://www.arcgis.com'),

  '38406bada3104e258fc8b42a2a96581a',

  0,

  ['Temperature_C'],

  True

);

var proximityWeatherStations = Intersects(weatherStations, Buffer($feature, searchDistance, "kilometers"));

var minDistance = Infinity;

var closestWeatherStationTemp;

for (var f in proximityWeatherStations){

 var weatherDist = Round(Distance(f, $feature, "kilometers"),2);

 if (weatherDist < minDistance) {

     closestWeatherStationTemp = f["Temperature_C"];

     minDistance = weatherDist;

 }

}

// Check if a closest individual weather station was found before accessing its property

if (closestWeatherStationTemp != null) {

    return "Closest Weather Station Temperature is: " + closestWeatherStationTemp + " degrees C and is located approximately " + Round(minDistance,0) + " km away.";

} else {

    return "No closest weather station was found within the search distance.";

}

[ChrisJRoss13]

I modified the code slightly and checked into a few things.

• The null check doesn't make any impact.
• closestWeatherStationTemp grabs the temperature of the specific station.
• I tested adding the hosted feature layer to the map and comparing FeatureSetByName and FeatureSetByPortalID. The FeatureSetByName option works in Field Map. I've attached the same selected feature in AGOL map viewer and field maps showing reference to ByPortalID and ByName.

My most recent code is:

// Define search parameters

var searchDistanceKm = 50; // Search distance in kilometers

// Access weather stations from the Living Atlas

// Source: Environment Canada dataset

var weatherStationsFS = FeatureSetByPortalItem(

  Portal("https://www.arcgis.com"),

  "38406bada3104e258fc8b42a2a96581a", // Item ID for the dataset

  0, // Layer index

  ["Temperature_C"], // Attributes to include

  true // Spatial filtering flag

);

// Find weather stations within the search distance

var nearbyWeatherStations = Intersects(

  weatherStationsFS,

  Buffer($feature, searchDistanceKm, "kilometers")

);

// Initialize variables to track the closest station

var minDistance = Infinity;

var closestStationTemperature = null;

// Iterate through nearby stations to find the closest one

for (var station in nearbyWeatherStations) {

  var distanceToStation = Round(Distance(station, $feature, "kilometers"), 2);

  if (distanceToStation < minDistance) {

    closestStationTemperature = station["Temperature_C"];

    minDistance = distanceToStation;

  }

}

// Output the result based on whether a close station was found

if (closestStationTemperature != null) {

  return "Closest Weather Station Temperature is " + closestStationTemperature + "°C and is located approximately " + Round(minDistance, 0) + " km away.";

} else {

  return "No closest weather station was found within the search distance.";

}

[AlexHogan]

Hi @ChrisJRoss13 

To confirm using the FeatureSetByName resolved the issue for you?

I am seeing a similar issue that I am troubleshooting now,

Thanks

Alex