# Find Routes for Supersonic Aircraft

## Documentation for package ‘himach’ version 1.0.1

- DESCRIPTION file.
- User guides, package vignettes and other documentation.
- Package NEWS.

## Help Pages

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
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
profile_routes | Profile a set of routes
st_window | Version of 'st_transform' with view window to avoid dateline
summarise_routes | Summarise a set of routes