Correct arcade label in AGOL based on if, else if and else

[PeterGill2]

Hi,

I am trying to create an arcade expression for my labels in the map

The following is the expression I have done - but on the second line - when I test - it says if  "assignments not be made in logical tests"

if (!IsEmpty($feature.OPERATIONALID)) {$feature.ASSETID}
else if ($feature.OPERATIONALID = $feature.ASSETID) {$feature.ASSETID}
else {$feature.ASSETID + " (" + $feature.OPERATIONALID + ")"}

What am I doing wrong.

Basic logic is:

If OperationalID is null or empty then label assetID, if operationalID = AssetID, label AssetID, else label a concatenation of assetID + OperationalID

[DavidPike · Accepted solution]

I've only a basic javascript knowledge, but it seems like you have a rogue "!" before isEmpty(),

and $feature.OPERATIONALID = $feature.ASSETID is an attempted assignment without a 'var' etc. I'd say it should be a comparison operator "==" $feature.OPERATIONALID == $feature.ASSETID.

if (IsEmpty($feature.OPERATIONALID)) {$feature.ASSETID}
else if ($feature.OPERATIONALID == $feature.ASSETID) {$feature.ASSETID}
else {$feature.ASSETID + " (" + $feature.OPERATIONALID + ")"}

[PeterGill2]

Thanks David - works perfectly