bearing

bearing(lat1, lon1, lat2, lon2) → number · Geospatial

Calculate the initial bearing (forward azimuth) from point1 to point2 in degrees (0-360).

• lat1 (required): latitude of origin point

• lon1 (required): longitude of origin point

• lat2 (required): latitude of destination point

• lon2 (required): longitude of destination point

echo '{"from": {"lat": 52.37, "lon": 4.90}, "to": {"lat": 48.86, "lon": 2.35}}' \
  | utlx -e 'bearing($input.from.lat, $input.from.lon, $input.to.lat, $input.to.lon)'
# 210.5 (degrees — roughly southwest)

{
  heading: bearing($input.origin.lat, $input.origin.lon, $input.dest.lat, $input.dest.lon)
}