topic Re: Arcade Expression Combining Multiple Layers For Graph in Dashboard in ArcGIS Dashboards Questions

Arcade Expression Combining Multiple Layers For Graph in Dashboard

Ian_Nelson — Wed, 12 Mar 2025 20:33:10 GMT

Hello, I'm attempting to create an arcade script that combines three layers (point, line, and polygon) with the same schema and then displaying that in a serial chart or pie chart. When I attempt to run the expression below the dashboard expression editor has this as the output. Any help would be greatly apricated! I've been staring at this for hours...

Thanks!

Re: Arcade Expression Combining Multiple Layers For Graph in Dashboard

RPGIS — Thu, 13 Mar 2025 12:23:39 GMT

Your issue is that you have this in your code trying to populate an array but it is set to populate a dictionary.

combinedDict.features[i]

So you want to change it to look like the example below.

for (var m in polygon_field){ var A = { attributes: { CatCode : m["Cat28Code2025"], Notes : m["Notes2025"], Condition : m["Ocondition2025"], Source : "Polygon" } } Push( combinedDict.features , A ) }

I am also throwing this example in here to showcase a simpler manner to write the same code.

function CreateDictValues( InArray , InFeature , Fields , Geometry ){ for( var row in InFeature ){ var Values = iif( !IsEmpty( Geometry ) , { Source : Geometry } , {} ) var Valid = False for( var field in row ){ if( HasKey( Fields , field ) ){ field = Fields[ field ] Values[ field ] = i[ field ] Valid = True } } if( Valid ){ Push( InArray , { attributes: Values } ) } } return InArray } //Loop through each FeatureSet and populate feature array var PopValues = [] var F = {"Cat28Code2025":'CatCode',"Notes2025":'Notes',"Ocondition2025":"Condition","RBU":"BusinessUnit"} CreateDictValues( PopValues , point_field , F , "Point" ) CreateDictValues( PopValues , polyline_field , F , "Point" ) CreateDictValues( PopValues , polygon_field , F , "Point" ) // Return dictionary cast as a feature set var combinedDict = { fields:[ {name : "CatCode",type : "esriFieldTypeSmallInteger"}, {name : "Notes",type : "esriFieldTypeString"}, {name : "Condition",type : "esriFieldTypeDouble"}, {name : "BusinessUnit",type : "esriFieldTypeString"}, {name : "Source", type : "esriFieldTypeString"}, ], 'geometryType':"", 'features':PopValues , } return FeatureSet(Text(combinedDict))

Re: Arcade Expression Combining Multiple Layers For Graph in Dashboard

Ian_Nelson — Mon, 17 Mar 2025 20:14:36 GMT

I was about to get both my expression and the one above to work. My problem was in the FeatureSetByPortalItem. I had the incorrect layerid. The zero needed to be 1