¿Por qué mi expresión de Arcade no devuelve una etiqueta en ArcGIS Online (aunque la prueba se realice correctamente)?

Question

Escribí la expresión de etiquetado de abajo para comprobar la longitud de la tubería y la forma de la sección transversal, y determinar si se genera una etiqueta para una tubería y cómo se genera. Funciona perfectamente en ArcGIS Pro y, cuando pego la expresión en ArcGIS Online, el código se valida y devuelve una cadena de prueba, tal como se esperaba (para ambas funciones de etiquetado de la expresión). Sin embargo, no se muestran etiquetas en el mapa. Tengo una función similar (y más sencilla) que funciona perfectamente. function ChooseLabelFormat(ML,PL,Sec){ //Llama a la función de etiquetado según la forma de la tubería return When( PL >= ML && Sec == 'Circular', GetMainLabel ($feature.NominalDiameter,$feature.Material), PL >= ML && Sec != 'Circular', GetMainLabelNC ($feature.Material,$feature.BoxHeight,$feature.BoxWidth), "") }; function GetMainLabel(Dia,Mat){ //Devuelve el diámetro y/o el material, excepto los valores -999 y Unk return When( Dia !=-999 && Mat != "Unk", Dia + "'' " + Mat, Dia !=-999 && Mat == "Unk", Dia + "''", Dia ==-999 && Mat != "Unk", Mat, "") }; function GetMainLabelNC(Mat,BH,BW){ //Devuelve la altura x el ancho y/o el material, excepto los valores -999 y Unk return When( BH !=-999 && Mat != "Unk", BH + "'' x " + BW + "'' " + Mat, BH !=-999 && Mat == "Unk", BH + "'' x " + BW + "'' ", BH ==-999 && Mat != "Unk", Mat, "") }; //Define las variables y llama a la función para etiquetar var Section = DomainName($feature, 'CrossSectionShape'); // Establece MinLabel como la longitud mínima del elemento que se etiquetará: var MinLabel = 50; var PipeLen = $feature.SHAPE__Length; //var PipeLen = Length(Geometry($feature), 'feet') return ChooseLabelFormat(MinLabel,PipeLen,Section);‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

XanderBakker · Answer

OK, so for some reason it does not like the functions (I guess). If I use this expression it seems to work: var Sec = DomainName($feature, 'CrossSectionShape'); var ML = 50; var PL = $feature.SHAPE__Length; var Dia = $feature.NominalDiameter; var Mat = $feature.Material; var BH = $feature.BoxHeight; var BW = $feature.BoxWidth; var GetMainLabel = When( Dia !=-999 && Mat != "Unk", Dia + "'' " + Mat, Dia !=-999 && Mat == "Unk", Dia + "''", Dia ==-999 && Mat != "Unk", Mat, ""); var GetMainLabelNC = When( BH !=-999 && Mat != "Unk", BH + "'' x " + BW + "'' " + Mat, BH !=-999 && Mat == "Unk", BH + "'' x " + BW + "'' ", BH ==-999 && Mat != "Unk", Mat, ""); var result = When( PL >= ML && Sec == 'Circular', GetMainLabel, PL >= ML && Sec != 'Circular', GetMainLabelNC, ""); return result;‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

XanderBakker · Answer

That is indeed very strange behavior. When I use the label expression and use it in the pop-up, it validates correctly with every feature. However, it does not return something in the pop-up or label. Very strange. I tried to rewrite the code and this resulted in the same behavior. function ChooseLabelFormat(ML,PL,Sec){ //Calls the label function based on pipe shape if (PL >= ML) { if (Sec == 'Circular') { return GetMainLabel($feature.NominalDiameter,$feature.Material); } else { return GetMainLabelNC($feature.Material,$feature.BoxHeight,$feature.BoxWidth); } } else { return ""; } } function GetMainLabel(Dia,Mat){ //Returns Diameter and/or material excluding -999 and Unk values if (Dia !=-999) { if (Mat != "Unk") { return Dia + "'' " + Mat; } else { return Dia + "''"; } } else { if (Mat != "Unk") { return Mat; } else { return ""; } } } function GetMainLabelNC(Mat,BH,BW){ //Returns HeightxWidth and/or material excluding -999 and Unk values if (BH !=-999) { if (Mat != "Unk") { return BH + "'' x " + BW + "'' " + Mat; } else { return BH + "'' x " + BW + "'' "; } } else { if (Mat != "Unk") { return Mat; } else { return ""; } } } //Set variables and call function for labeleling var Section = DomainName($feature, 'CrossSectionShape'); // Set MinLabel value as the minimum feature length to be labeled: var MinLabel = 50; var PipeLen = $feature.SHAPE__Length; //var PipeLen = Length(Geometry($feature), 'feet') return ChooseLabelFormat(MinLabel,PipeLen,Section);‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ Maybe something for support? If I retrieve the WKID of the geometry it will return 102100 (Web Mercator Auxiliary Sphere): return $feature.OBJECTID; // returns 306 return Geometry($feature).spatialReference["wkid"]; // returns 102100 which is (Web Mercator Auxiliary Sphere) return Length($feature, "meter"); // returns 22.8405.... return Length($feature, "feet"); // returns 74.9362.... return $feature["Shape__Length"]; // returns 57.2223.... return LengthGeodetic($feature, "meter"); // returns 17.4116.... return LengthGeodetic($feature, "feet"); // returns 57.1249.... ‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ So the Shape__Length represents the length in feet (Geodetic). I will try one last thing to see if it works...

RobBlash · Answer

Thanks Xander Bakker‌ See example here: http://arcg.is/1Tzjiq There is one layer with the code in my original post, which does not produce a label. There is a second layer with the code shown below that does produce a label. //Returns Diameter and/or material excluding -999 and Unk values function GetMainLabel(Dia,Mat) { return When(Dia !=-999 && Mat != "Unk", Dia + "'' " + Mat, Dia !=-999 && Mat == "Unk", Dia + "''", Dia ==-999 && Mat != "Unk", Mat,"") } // Set MinLabel value as the minimum feature length to be labeled: var MinLabel = 50; var PipeLen = $feature.SHAPE__Length; //var PipeLen = Length(Geometry($feature), 'feet'); iif (PipeLen >= MinLabel, GetMainLabel ($feature.NominalDiameter,$feature.Material),'');‍‍‍‍‍‍‍‍‍ Regarding the length, that's actually commented out and the length is taken from Shape__Length. However, the data was in NJ State Plane when published, and it's my understanding that it stays that way and gets projected on the fly in AGOL. Is this not correct? The spatial reference WKID is 102711 (NJ state plane NAD83)per the json (see screen shot)