| crs_120E | Asia-centred coordinate reference system |
| crs_Atlantic | Atlantic-centred coordinate reference system |
| crs_longlat | Lat-long coordinate reference system |
| crs_N | Arctic-centred coordinate reference system |
| crs_Pacific | Pacific-centred coordinate reference system |
| crs_S | Antarctic-centred coordinate reference system |
| find_leg | Find best non-stop route between 2 airports |
| find_route | Find best route between 2 airports |
| find_routes | Find best routes between airport-pair & aircraft combinations |
| GridLat-class | A grid and lattice combination |
| himach | himach: A package for computing supersonic aircraft routes |
| hm_clean_cache | Clean the route and SID-STAR cache. |
| hm_get_test | Get test data |
| hm_load_cache | Load route and SID/STAR cache |
| hm_save_cache | Save route and SID/STAR cache to file |
| mach_kph | Speed of sound, for Mach to km conversion |
| make_aircraft | Make aircraft data from minimum dataset |
| make_airports | Make or load airport data |
| make_AP2 | Make airport-pair dataset |
| make_route_envelope | Make range-constrained envelope between 2 airports |
| make_route_grid | Make lat-long grid for route finding |
| map_routes | Map a set of routes |
| st_window | Version of 'st_transform' with view window to avoid dateline |
| summarise_routes | Summarise a set of routes |