[WWW - 2023.07.31]

Data Element Detail

Facility (address)-geocode longitude
Identifying and Definitional Attributes
QH 042757 v1
Data Element
Data Element
Draft
05-Oct-2018		Current
18-May-2021
Standard
Information Management Strategic Governance Committee (IMSGC), Queensland Health
01-Jul-2001
The Geocentric Datum of Australia (GDA94) datum that provides a measure of longitude for a facility.
CRDS facilities
Facility longitude
Longitude
Representational Attributes
Character
Identification Number
X[NN]N[.N(7)]
2
12
Permissible Values

Permissible_values

-
Supplementary Values

Supplemenary_values

-
Collection and Usage Attributes
A datum is a mathematical representation that best fits the shape of the earth. Accurate mapping and coordinate systems are based on a datum. The datum known as Geocentric Datum of Australia (GDA94) ensures Australia is in line with the rest of the world's coordinate systems, and is totally compatible with satellite based navigation systems, for example Global Positioning Systems (GPS).

The 'X' in the longitude format symbolises the designator symbol '+' or '-' and should be placed prior to the first number.

The designator symbol for longitudes east of Greenwich are positive and shall be designated by use of the plus sign (+), while longitudes west of Greenwich are negative and shall be designated by use of the minus sign (-). The Prime Meridian shall be designated by use of the plus sign (+). The 180th meridian shall be designated by use of the minus sign (-).

The format X[NN]N[.N(7)] allows for 1, 2 and 3 digit longitudes (i.e. degrees) with the option of 0 to 7 decimal places (i.e. decimal degrees).

Usage examples:
+149.0913605
+2
+152.95151
Corporate Reference Data System (CRDS) Facility Data Set:
Attribute type is GEOLONG (Geocode longitude). Geocoding is being progressively actioned and at this point in time is completed for hospitals, public community health facilities, public residential aged care services, primary health centres that were previously declared hospitals, and public young disabled residential care service facilities.

Geocoding information for a facility is maintained in CRDS by Statistical Services Branch (SSB) using the geocoding service Property Location Service Plus (PLS Plus)-Public provided by the Department of Natural Resources, Mines and Energy (DNRME) or Google Maps as the source for the information. For Queensland Health facilities in remote areas where location details are not available on Google Maps, geocoding data provided by Department of Health (DoH) is used as the source.

The following process is followed to assign geocoding information to facilities,

Step 1
The facility addresses are first parsed through the PLSPlus-Public geocoding service.

Step 2
Results with low confidence (confidence < 100) are then compared with results from Google maps to determine if greater accuracy can be reached.
If there is a difference of more than 0.00001 decimal degrees between the geocoding returned by PLSPlus-Public and by Google maps, Google Maps is used as the source.

Step 3
For facilities in remote areas where geocoding information is not available on PLSPlus-Public version or Google Maps, the geocoding provided by Department of Health (DoH) is used as the source.

Refer to data element Facility (CRDS)-geocode data source for more information.
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.
Relational Attributes
Related Metadata References

Related Metadata References_IR

  • 1 - 8
ViewRelationshipMetadata Item TypeMetadata Item SubtypeNameIdentifier & VersionApproval Status
Is used in conjunction withData ElementData ElementFacility (CRDS)-attribute assigned to facility end dateQH 041879 Version 1Current
Is used in conjunction withData ElementData ElementFacility (CRDS)-attribute assigned to facility start dateQH 041878 Version 1Current
Relates toData ElementData ElementFacility (address)-Google Maps geocode locationQH 042759 Version 1Current
Relates toData ElementData ElementFacility (address)-geocode data sourceQH 042758 Version 1Current
Relates toData ElementData ElementFacility (address)-geocode latitudeQH 042756 Version 1Current
Relates toData ElementData Element ConceptFacilityQH 041826 Version 2Current
Relates toData ElementData Element ConceptFacilityQH 041826 Version 1Superseded
Relates toData ElementData Element ConceptFacility attributeQH 041858 Version 1Current
Implementation in Metadata Sets

Implemented

  • 1 - 2
ViewMetadata Item TypeMetadata Item SubtypeNameIdentifer & VersionObligationApproval StatusEffective FromEffective To
Information AssetData CollectionCorporate Reference Data System (CRDS) - Facility Data SetQH 020271 Version 2ConditionalCurrent01-Jul-2019
Information AssetData CollectionCorporate Reference Data System (CRDS) - Facility Data SetQH 020271 Version 1ConditionalSuperseded01-Jul-200130-Jun-2019
Source and Reference Attributes
Standards Australia
Queensland Government, Department of Natural Resources and Mines
Australian Standard AS 4590-2006 Interchange of client information
Address; GDA; Geocode; Location; Long; Longitude;