Data.Geo.Geodetic.Haversine

Haversine geodetic distance algorithm.

Documentation

haversine

Arguments

:: (HasCoordinate c1, HasCoordinate c2)

=> Sphere

reference sphere

-> c1

start coordinate

-> c2

end coordinate

-> Double

Haversine algorithm.

>>> fmap (printf "%0.4f") (do fr <- 27.812 ..#.. 154.295; to <- (-66.093) ..#.. 12.84; return (haversine earthMean fr to)) :: Maybe String
Just "15000950.5589"

>>> fmap (printf "%0.4f") (do fr <- (-16.7889) ..#.. 41.935; to <- 6.933 ..#.. (-162.55); return (haversine earthMean fr to)) :: Maybe String
Just "17128743.0669"

>>> fmap (printf "%0.4f") (do fr <- 27.812 ..#.. 154.295; to <- (-66.093) ..#.. 12.84; return (haversine (6350000 ^. nSphere) fr to)) :: Maybe String
Just "14959840.4461"

>>> fmap (printf "%0.4f") (do fr <- (-16.7889) ..#.. 41.935; to <- 6.933 ..#.. (-162.55); return (haversine (6350000 ^. nSphere) fr to)) :: Maybe String
Just "17081801.7377"

haversineD

Arguments

:: (HasCoordinate c1, HasCoordinate c2)

=> c1

start coordinate

-> c2

end coordinate

-> Double

Haversine algorithm with a default sphere of the earth mean.

>>> fmap (printf "%0.4f") (do fr <- 27.812 ..#.. 154.295; to <- (-66.093) ..#.. 12.84; return (haversineD fr to)) :: Maybe String
Just "15000950.5589"

>>> fmap (printf "%0.4f") (do fr <- (-16.7889) ..#.. 41.935; to <- 6.933 ..#.. (-162.55); return (haversineD fr to)) :: Maybe String
Just "17128743.0669"

haversine' :: Optional1 Sphere (Coordinate -> Coordinate -> Double) x => x

Haversine algorithm with an optionally applied default sphere of the earth mean.

>>> fmap (printf "%0.4f") (do fr <- 27.812 ..#.. 154.295; to <- (-66.093) ..#.. 12.84; return (haversine' fr to :: Double)) :: Maybe String
Just "15000950.5589"

>>> fmap (printf "%0.4f") (do fr <- (-16.7889) ..#.. 41.935; to <- 6.933 ..#.. (-162.55); return (haversine' fr to :: Double)) :: Maybe String
Just "17128743.0669"