Returns the OGC API queryables document for a collection – a JSON
Schema describing the filter properties the server exposes (this is
typically used by OGC API Features for CQL2 / property-based
filtering). It is not the right place to look up the data
parameters / observed properties an EDR collection serves; for that,
use edr_parameters().
Arguments
- client
An
edr_client.- collection_id
Collection identifier as advertised by the server – e.g.
"monitoring-locations"or"daily-values".- refresh
If
TRUE, bypass and replace any cached response. Discovery responses otherwise use the client'scache_ttl; seeedr_client().