unique values

[schmity]

Hi,
in my organisation there is a need to get unique values for a specific property from an OGC API Features collection. Is this already supported in OGC API Features, part 3 or planned?

E.g. like so:
GET /collections/mycollection/items?property=myproperty&unique=true

Best,
Sebastian

[cportele]

@schmity - There is no concrete plan for such a capability. It would have to be its own resource (e.g. /collections/mycollection/properties/myproperty) since the items resource returns a FeatureCollection, but this request would return an array of values or some kind of statistics for a property.

[schmity]

@cportele , thanks for the insight. Unique values for properties might also fit in the collection resource, /collections/mycollection/, being similar to spatial and temporal extent in a way.
The simple use case of our web developers (Masterportal) is to create a drop-down for filtering without having to parse the entire dataset. How would one adress that in a standardized way, if the dataset comes without code lists?

[schmity]

#799 (comment) provides a feasible approach for our use case.