Using a field as a measure without aggregation

[Megs]

Like the title suggests, I'm trying to use a field(column) from a table as a measure without aggregating the data. Is this possible?

[Or]

If you were to do that, it would simply be the equivalent of using Only(Field), except implicitly rather than explicitly.

[Megs]

I tried using Only but the issue is I keep getting the error "The chart is not displayed because it contains only undefined values". I checked the data already and it seems fine. Any thoughts?