Calculate great circle distance and bearing between coordinates

Calculate great circle distance and bearing between spatial coordinates, defined by longitude and latitude of both origin and destination points.

lonlat_to_bearing(origin_lon, origin_lat, dest_lon, dest_lat)

Arguments

origin_lon, origin_lat	the origin longitude and latitude.
dest_lon, dest_lat	the destination longitude and latitude

Examples

# one degree longitude should equal approximately 111km at the equator
lonlat_to_bearing(0, 0, 1, 0)
#> $bearing
#> [1] 90
#> 
#> $gc_dist
#> [1] 111.1949
#>