GEOGRAPHY METADATA PROFORMA
Dataset Custodian
Title
Australian Standard Geographical Classification (ASGC) Digital Boundaries (Intercensal), Australia (cat. no. 1259.0.30.001)
Custodian
ABS Geography Section
Email: geography@abs.gov.au
Description
Abstract
The digital boundaries for this edition of the ASGC are consistent with the spatial units described in the structures of the ASGC 2009. Date of effect of this edition is 1 July 2009. Digital boundaries are for Statistical Local Area (SLA), Statistical Subdivision (SSD), Statistical Division (SD), Local Government Area (LGA), Statistical District (SDIST), Major Statistical Region (MSR), Statistical Region (SR), Statistical Region Sector (SRS) and State/Territory (STE).
Geographic Extent Name
Geographic Australia; including the external territories of Cocos (Keeling) Islands & Christmas Island but excluding all other external territories.
Data Currency
Beginning date: 1 July 2009
End date: Current
Data Status
Progress: Completed dataset
Maintenance and Update Frequency: No further updates are planned
Data Access
Stored Data Format
Digital as separate files for each level of the ASGC 2009 structures represented.
Available Format Type
MapInfo Interchange Format (mid/mif) and ESRI Shapefile Format (.shp)
Access Constraints
Copyright Commonwealth of Australia administered by the ABS.
Data Quality
Lineage
SLA boundaries are aligned to the PSMA digital topographic database. Higher level spatial units are aggregated from the SLA level.
Positional Accuracy
The PSMA topographic database to which boundaries are aligned was captured at scales which vary from 1:4,000 in urban areas to 1:250,000 in remote areas.
Attribute Accuracy
Geographical area codes and labels are 100% validated to the 2009 edition codes and labels of the structures represented. (Reference is cat. no. 1216.0).
Logical Consistency
Spatial units are closed polygons. Polygons are attributed with ASGC 2009 codes and labels. Slivers/bow-ties may be present within or between spatial units. These data include attribute records without spatial objects for administrative purposes.
Completeness
Four structures defined for the ASGC 2009 are represented - all levels of each of those structures are represented. The four structures represented are the Main Structure, Local Government Area Structure, Statistical District Structure and Statistical Region Structure.
Co-ordinate Systems
Datum
Geocentric Datum of Australia 1994 (GDA94)
Projection
Geographical (ie. latitudes and longitudes)
Metadata Date
July 2009
Additional Metadata
Reference: Australian Standard Geographical Classification (ASGC) 2009 (cat. no. 1216.0); Australian Standard Geographical Classification (ASGC) - Electronic Structures 2009 (cat. no. 1216.0.15.001) and Australian Standard Geographical Classification (ASGC) Correspondences 2009 (cat. no. 1216.0.15.002).
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