Definition
Components
-
Data Element ConceptAddress—geocode longitude
-
Object ClassAddress
-
PropertyGeocode longitude
-
-
Value DomainNone
Comments
Standards Australia 2006. AS 4590—2006 Interchange of client information. Sydney: Standards Australia.Comments:
Geographical coordinates (latitudes and longitudes) are the universal system for defining spatial position. A set of geographic coordinates on a datum is complete and unique, worldwide.
Positions of geographic features can be defined in space by a set of coordinates. In order for coordinates to be unique, the coordinate reference system needs to be fully defined.
A coordinate reference system is realised by a reference frame, which comprises a datum and a coordinate system.
Longitudes can also be expressed in degrees, minutes and seconds (e.g. 150° 54' 45".98), see METeOR for this related item. A conversion to decimal degrees from the degrees, minutes and seconds format can be calculated with the following formula: Decimal Degrees = Degrees + ((Minutes / 60) + (Seconds / 3600)). (REF:
https://www2.landgate.wa.gov.au/slip/portal/home/
Graticule.html)
Usage example: -75° 59' 32.483" converts to -75.992356389 in decimal degrees (rounded up to 9 decimal places).