I have previously used this Arcade expression with other datasets and haven not had any issues, I tried running this expression today:
var portal = Portal('https://mass-eoeea.maps.arcgis.com');
var features = FeatureSetByPortalItem(portal, 'ed174bb08dc34850ac8d0e719cae0c72', 0, ['*'], true);var open = $feature;
var landid = contains(open, features);var cnt = Count(landid);
var resultado = "This Open-Space parcel contains " + cnt+ " "+ "Land ID Points";
for (var f in landid) {
resultado += TextFormatting.NewLine + "Land Id(s):" + text(f.id)
}return resultado
When I test the expression out in the webmap, I get the expected results:
Result :Value
Result: This Open-Space parcel contains 1 Land ID Points
Land Id(s):10196
Type: String
However, when I try running the expression using the field calculator on a string field (255 characters) in the $feature, I keep getting this error message,
a._known.slice is not a function
Can anyone point me in the right direction as to what I am doing wrong with my syntax?
Hi Francisco Rodriguez ,
I have not seen that error before and to be honest and I don't know why it is happening.
I do see a couple of things:
Something like:
var portal = Portal('https://mass-eoeea.maps.arcgis.com');
var features = FeatureSetByPortalItem(portal, 'ed174bb08dc34850ac8d0e719cae0c72', 0, ['id'], false);
var open = $feature;
var landid = contains(open, features);
var cnt = Count(landid);
var resultado = "This Open-Space parcel contains " + cnt + " Land ID Points";
resultado += TextFormatting.NewLine + " - Land Id: ";
var lst = [];
for (var f in landid) {
lst[Count(lst)] = f.id;
}
resultado += Concatenate(lst, ", ");
return resultado;