Copyright	(c) Jann Müller 2018
License	MIT
Maintainer	Jann Müller <j.mueller.11@alumni.ucl.ac.uk>
Stability	experimental
Portability	non-portable
Safe Haskell	None
Language	Haskell2010

Data.H3.Geo.Projection

Contents

Description

Scales for projecting geographic coordinates onto a 2D plane.

Synopsis

Projections

Instances

Scalable Mercator (Point Radians) (Double, Double) Source #
Instance details Defined in Data.H3.Geo.Projection Associated Types type Target Mercator :: * -> * # type TargetRange Mercator (Double, Double) :: * # data ScaleOptions Mercator (Point Radians) (Double, Double) :: * # Methods scale :: ScaleOptions Mercator (Point Radians) (Double, Double) -> TargetRange Mercator (Double, Double) -> Point Radians -> Target Mercator (Double, Double) #
type Target Mercator Source #
Instance details Defined in Data.H3.Geo.Projection type Target Mercator = Identity
data ScaleOptions Mercator (Point Radians) (Double, Double) Source #
Instance details Defined in Data.H3.Geo.Projection data ScaleOptions Mercator (Point Radians) (Double, Double) = MercScale (Point Radians, Point Radians) NullMeridian
type TargetRange Mercator (Double, Double) Source #
Instance details Defined in Data.H3.Geo.Projection type TargetRange Mercator (Double, Double) = (Extent Double, Extent Double)

Construct a mercator projection that maps the given "rectangle" of coordinates to the target rectangle

Null meridian used for mercator projection (in degrees)

Constructors

NullMeridian
Fields getNullMeridian :: Degrees

greenwich = NullMeridian 0

Instances

Scalable Albers (Point Radians) (Double, Double) Source #
Instance details Defined in Data.H3.Geo.Projection Associated Types type Target Albers :: * -> * # type TargetRange Albers (Double, Double) :: * # data ScaleOptions Albers (Point Radians) (Double, Double) :: * # Methods scale :: ScaleOptions Albers (Point Radians) (Double, Double) -> TargetRange Albers (Double, Double) -> Point Radians -> Target Albers (Double, Double) #
type Target Albers Source #
Instance details Defined in Data.H3.Geo.Projection type Target Albers = Identity
data ScaleOptions Albers (Point Radians) (Double, Double) Source #
Instance details Defined in Data.H3.Geo.Projection data ScaleOptions Albers (Point Radians) (Double, Double) = AlbScale { alArea :: (Point Radians, Point Radians) alReferencePoint :: Point Radians alPhi1 :: Radians alPhi2 :: Radians }
type TargetRange Albers (Double, Double) Source #
Instance details Defined in Data.H3.Geo.Projection type TargetRange Albers (Double, Double) = (Extent Double, Extent Double)

Arguments

:: (Point Radians, Point Radians)	Area that should be mapped to the target area
-> Point Radians	Reference point
-> Radians	First standard parallel
-> Radians	Second standard parallel
-> ScaleOptions Albers (Point Radians) (Double, Double)

Albers projection (https:/en.wikipedia.orgwiki/Albers_projection). Sensible values for first and second standard parallels are 20°N50°N or 15°N45°N

Arguments

:: (Point Radians, Point Radians)	Area that should be mapped to the target area
-> Point Radians	Reference point
-> ScaleOptions Albers (Point Radians) (Double, Double)

Albers projection (https:/en.wikipedia.orgwiki/Albers_projection) using 15 and 45 degrees for the standard parallels.

Data constructors

data family ScaleOptions (f :: * -> *) a b :: * #

Additional parameters for the scale (other than target range).

Instances

data ScaleOptions Albers (Point Radians) (Double, Double) #
Instance details Defined in Data.H3.Geo.Projection data ScaleOptions Albers (Point Radians) (Double, Double) = AlbScale { alArea :: (Point Radians, Point Radians) alReferencePoint :: Point Radians alPhi1 :: Radians alPhi2 :: Radians }
data ScaleOptions Mercator (Point Radians) (Double, Double) #
Instance details Defined in Data.H3.Geo.Projection data ScaleOptions Mercator (Point Radians) (Double, Double) = MercScale (Point Radians, Point Radians) NullMeridian
data ScaleOptions ((->) a :: * -> *) a b
Instance details Defined in Data.H3.Scalable data ScaleOptions ((->) a :: * -> *) a b = ArrScaleOpts (a -> b)