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Label in Arcade based on domain value?

Brian_McLeer

I am trying to label a feature based on if it is in particular criteria. There are address points where we want to label the Situs Number (SitusNum) based only if the Description of the address is 'SINGLE'. The code below is obviously basic but I am wondering how I can apply a when or if statement to below. We will be using multiple expressions in the same label class, so applying a SQL filter will not be enough.

$feature.SitusNum

SQL Statement to make it so it labels only where the description is NULL:

Description = 'SINGLE'

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Accepted answers

jcarlson

A straight "translation" of that code might look like this:

var d = $feature.Description
var s = $feature.SitusNum
var u = $feature.myUnitVal

if(d == 'SINGLE'){
    return s
} else if(d == 'DUPLEX'){
    if(IsEmpty(u)){
        return s
    } else{
        return s + ' - ' + u
}

Note the function IsEmpty returns True if the value is null or an empty string.

All comments

Brian_McLeer

Thank you both for your assistance on this, greatly appreciated.

kenbuja

There's a missing "}" before the "else"

Brian_McLeer

So when I enter that, it shows that there is a reserved keyword on line 10.

else{

jcarlson

A straight "translation" of that code might look like this:

var d = $feature.Description
var s = $feature.SitusNum
var u = $feature.myUnitVal

if(d == 'SINGLE'){
    return s
} else if(d == 'DUPLEX'){
    if(IsEmpty(u)){
        return s
    } else{
        return s + ' - ' + u
}

Note the function IsEmpty returns True if the value is null or an empty string.

Brian_McLeer

Thanks, Josh,

To clarify, I am looking to label the Situs Number of the address where the description of the address is single. We label different addresses in different ways that we are trying to convert from VB Script into Arcade. The example below shows how we labeled single addresses, then how we labeled duplexes in the same label class.

Function FindLabel ([Description], [SitusNum], [BuildingNum], [UnitNum])
myDescrip = [Description]
myBldgVal = [BuildingNum] 
myUnitVal = [UnitNum] 

  Select Case myDescrip
    Case "SINGLE"
        FindLabel = [SitusNum]
    Case "DUPLEX"
        if isNull(myUnitVal) or myUnitVal = "" or myUnitVal = " " then
           FindLabel = [SitusNum]      
           else
            FindLabel = [SitusNum] & " - " &  [UnitNum]

jcarlson

Maybe it's just me, but it's not entirely clear what your end goal is here based on the code you've shared. Can you elaborate on what the "multiple expressions" are, and give an example of what the expected output might be?

If you're just looking for how to implement a series of "if... else if... else" statements, the Arcade guide details this thoroughly.

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