GEOGRAPHY METADATA PROFORMA

DATASET CUSTODIAN

Title

1 Australian Standard Geographical Classification (ASGC) Digital Boundaries (Intercensal), Australia (cat. no. 1259.0.30.001)

Custodian

2 ABS Geography Section.
Email: geography@abs.gov.au


DESCRIPTION

Abstract

3 The digital boundaries for this edition of the ASGC are consistent with the spatial units described in the structures of the ASGC 2008. Date of effect of this edition is 1 July 2008. 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

4 Geographic Australia; including the external territories of Cocos (Keeling) Islands & Christmas Island but excluding all other external territories.

Data Currency
5 Beginning date: 1 July 2008
End date: Current

Data Status

6 Progress: Completed dataset
Maintenance and Update Frequency: No further updates are planned

DATA ACCESS

Stored Data Format

7 Digital as separate files for each level of the ASGC 2008 structures represented.

Available Format Type

8 MapInfo Interchange Format (mid/mif) and ESRI Shapefile Format (.shp)

Access Constraints

9 Copyright Commonwealth of Australia administered by the ABS.


DATA QUALITY

Lineage

10 SLA boundaries are aligned to the PSMA digital topographic database. Higher level spatial units are aggregated from the SLA level.

Positional Accuracy

11 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

12 Geographical area codes and labels are 100 % validated to the 2008 edition codes and labels of the structures represented. (Reference is cat. no. 1216.0).

Logical Consistency

13 Spatial units are closed polygons. Polygons are attributed with ASGC 2008 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

14 Four structures defined for the ASGC 2008 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

15 Geocentric Datum of Australia 1994 (GDA94)

Projection

16 Geographical (ie. latitudes and longitudes)

Metadata Date

17 July 2008

Additional Metadata

18 Reference: Australian Standard Geographical Classification (ASGC) 2008 (cat. no. 1216.0); Australian Standard Geographical Classification (ASGC) - Electronic Structures 2008 (cat. no. 1216.0.15.001) and Australian Standard Geographical Classification (ASGC) Concordances 2008 (cat. no. 1216.0.15.002).