UTMRef

To represent a Universal Transverse Mercator (UTM) reference.

Documentation

data UTMRef

Constructors

UTMRef

Fields

• easting :: Double

  Easting

• northing :: Double

  Northing

• latZone :: Char

  Latitude zone character

• lngZone :: Int

  Longitude zone number

• datum :: Datum

Instances

Show UTMRef

Methods

showsPrec :: Int -> UTMRef -> ShowS

show :: UTMRef -> String

showList :: [UTMRef] -> ShowS

mkUTMRef

Arguments

:: Double

The easting in metres

-> Double

The northing in metres

-> Char

The latitude zone character

-> Int

The longitude zone number

-> Except String UTMRef

If any of the parameters are invalid. Be careful that a valid value for the easting does not necessarily mean that the UTM reference is well-formed. The current checks do not take into account the varying range of valid values for the easting for different latitudes.

Create a new UTM reference object. Checks are made to make sure that the given parameters are roughly valid, but the checks are not exhaustive with regards to the easting value. Catching an exception does not necessarily mean that the UTM reference is well-formed. This is because that valid values for the easting vary depending on the latitude.

toLatLng :: UTMRef -> Except String LatLng

Convert this UTM reference to a latitude and longitude.

toUTMRef :: LatLng -> Except String UTMRef

Convert latitude and longitude to a UTM reference. If an attempt is made to convert a LatLng that falls outside the area covered by the UTM grid. The UTM grid is only defined for latitudes south of 84°N and north of 80°S.

getUTMLatitudeZoneLetter :: Double -> Char

Work out the UTM latitude zone from the latitude.