Problem using IIf in Arcade label expression to check if field is Null

MattSmithCarto

Trying to label this feature class on it's Name field. If the Name field is Null then I want to place custom text.

This is what I have:  

var name = $feature.name

IIf(IsEmpty(name) == False, name, 'landing ground')

But it only seems to label the True part of the statement and not the False, so I see the name, but not the text "landing ground" (image 2).

This seems really basic stuff, so can't work out why it's not working like I think it should.

 

jcarlson

IsEmpty evaluates to a boolean, and "!" negates a condition, so you can re-write that as

Iif(!IsEmpty(name), name, 'landing ground')

 But what you're essentially doing is replicating the function DefaultValue. Try this:

DefaultValue(name, 'landing ground')