jord-0.4.1.0: Geographical Position Calculations

Copyright	(c) 2018 Cedric Liegeois
License	BSD3
Maintainer	Cedric Liegeois <ofmooseandmen@yahoo.fr>
Stability	experimental
Portability	portable
Safe Haskell	Safe
Language	Haskell2010

Data.Geo.Jord.Earth

Contents

Reference ellipsoids.
Spherical models dervived from reference ellipsoids.

Description

Ellipsoidal and derived spherical earth models.

Synopsis

data Earth
- = Ellipsoidal Ellipsoid
- | Spherical Length
data Ellipsoid = Ellipsoid {
- equatorialRadius :: Length
- inverseFlattening :: Double
}
eccentricity :: Earth -> Double
meanRadius :: Earth -> Length
polarRadius :: Earth -> Length
spherical :: Earth -> Earth
wgs84 :: Earth
grs80 :: Earth
wgs72 :: Earth
s84 :: Earth
s80 :: Earth
s72 :: Earth
r84 :: Length
r80 :: Length
r72 :: Length

Documentation

data Earth Source #

Earth model: ellipsoidal or spherical.

Constructors

Ellipsoidal Ellipsoid
Spherical Length

Instances

Eq Earth Source #
Instance details Defined in Data.Geo.Jord.Earth Methods (==) :: Earth -> Earth -> Bool # (/=) :: Earth -> Earth -> Bool #
Show Earth Source #
Instance details Defined in Data.Geo.Jord.Earth Methods showsPrec :: Int -> Earth -> ShowS # show :: Earth -> String # showList :: [Earth] -> ShowS #

data Ellipsoid Source #

Primary ellipsoid parameters.

Constructors

Ellipsoid
Fields equatorialRadius :: Length equatorial radius or semi-major axis (a). inverseFlattening :: Double inverse flattening.

Instances

Eq Ellipsoid Source #
Instance details Defined in Data.Geo.Jord.Earth Methods (==) :: Ellipsoid -> Ellipsoid -> Bool # (/=) :: Ellipsoid -> Ellipsoid -> Bool #
Show Ellipsoid Source #
Instance details Defined in Data.Geo.Jord.Earth Methods showsPrec :: Int -> Ellipsoid -> ShowS # show :: Ellipsoid -> String # showList :: [Ellipsoid] -> ShowS #

eccentricity :: Earth -> Double Source #

Computes the eccentricity of the given Earth model.

meanRadius :: Earth -> Length Source #

Computes the mean radius of the given Earth model.

This radius can be used for geodetic calculations assuming a spherical earth model.

polarRadius :: Earth -> Length Source #

Computes the polar radius or semi-minor axis (b) of the given Earth model.

spherical :: Earth -> Earth Source #

Spherical model derived from given model.

Reference ellipsoids.

wgs84 :: Earth Source #

World Geodetic System WGS84 ellipsoid.

grs80 :: Earth Source #

Geodetic Reference System 1980 ellipsoid.

wgs72 :: Earth Source #

World Geodetic System WGS72 ellipsoid.

Spherical models dervived from reference ellipsoids.

s84 :: Earth Source #

Spherical earth model derived from wgs84.

s80 :: Earth Source #

Spherical earth model derived from grs80.

s72 :: Earth Source #

Spherical earth model derived from wgs72.

r84 :: Length Source #

Mean earth radius derived from the wgs84 ellipsoid.

r80 :: Length Source #

Mean earth radius derived from the grs80 ellipsoid.

r72 :: Length Source #

Mean earth radius derived from the wgs72 ellipsoid.