I am not sure if I am just blind, but. In Mapbox you can filter your dataset.
So what I want is to display all lines of a given class, that have a certain attribute NOT set. I see options for Exists
, Is
and Is Not
. But there is no Does not exist
, right? Is there a way to define that? Or do I have to do that when exporting my dataset beforehand?
You will want to wrap your expression in the logical negation operator:
["!",{{your expression here}}]
In Mapbox Studio, after creating the filter, you can switch from the UI editor to the JSON editor at the bottom of the pane: