geographic_unique_stations: Return a vector of geographically unique NERR Stations
Description
Creates an alphabetically sorted, vector of geographically unique stations for mapping
Usage
geographic_unique_stations(nerr_site_id)
Arguments
nerr_site_id
chr vector of valid NERR stations
Value
returns a vector of NERR stations
Details
This function is intended for internal use with the NERRS reserve level reporting scripts and is used along with res_local_map. It takes a vector of NERR site ids and only returns geographically unique locations.