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GEODATA TOPO 2.5M 2003Note: This metadata describes the dataset in accordance with the ANZLIC (Australia New Zealand Land Information Council) Core Metadata Guidelines Version 2. Dataset citationANZLIC unique identifier: ANZCW0703005761 Title: GEODATA TOPO 2.5M 2003 CustodianCustodian: Geoscience Australia Jurisdiction: Australia DescriptionAbstract: The GEODATA TOPO 2.5M 2003 product is a national seamless data product aimed at regional or national applications. It is a vector representation of the Australian landscape as represented on the Geoscience Australia 1:2.5M general reference maps and is suitable for GIS applications. It superscedes the TOPO 2.5M 1998 product by being developed according to GEODATA standards. It has also been derived from GEODATA TOPO 250K Series 2 data where it was available (else GEODATA TOPO 250K Series 1). All features have also been revised in 2003 and have double precision accuracy. The product consists of eleven layers, including: built-up areas; contours; drainage; framework; localities; offshore; rail transport; road transport; sand ridges; Spot heights; and waterbodies. ANZLIC search words:
Spatial domain:
Geographic extent name: AUSTRALIA EXCLUDING EXTERNAL TERRITORIES - AUS - Australia - Australia Geographic extent polygon: 112 -9, 154 -9, 154 -44, 112 -44, 112 -9, Note: The format for each Geographic extent name is: Name - Identifier - Category - Jurisdiction (as appropriate) See GEN Register
Data currencyBeginning date: Not Known Ending date: 2003-05-01 Dataset statusProgress: Complete Maintenance and update frequency: Irregular Access
Access constraints: The data are subject to Copyright. Data files may be downloaded from Geoscience Australia's website at http://www.ga.gov.au/download/. A licence agreement is required. Free Data DownloadData qualityLineage: Data for the Contours, Offshore, and Sand ridge layers was captured from 1:2.5 million scale mapping by scanning stable base photographic film positives of the original map production material. The key source material for Built-up areas, Drainage, Spot heights, Framework, Localities, Rail tranport, Road transport and Waterbodies layers was GEODATA TOPO 2.5M 2003. Positional accuracy: GEODATA 2.5M 2003 data comply with the following statement of planimetric accuracy: `Not more than 10% of well-defined points are in error by more than 1400 metres?. Attribute accuracy: For this product, attribute accuracy is a measure of the degree to which the attribute values of a feature agree with the information on the source material. The allowable error in attribute accuracy ranges between 0% and 5%. Where less than 1% of errors are permissible, the entire population is tested. A full description of the checks on the data, the test sample size and the allowable error are provided in the product user guide of GEODATA TOPO 2.5M 2003. Logical Consistency: Logical consistency is a measure of the degree to which the data complies with the technical specification. The data was tested using a mixture of ArcInfo and UNIX programs. This included checking of the naming of tables and files and graphical tests to check intersections, polygon closures, and minimum size of polygons and topological relationships. Completeness: All instances of a feature and its attribute values that appear on the source material are captured unless otherwise indicated. The completeness was tested by assessing the data against the supplied and quoted source material, carrying out visual comparisons and data comparisons as required Contact information
Metadata informationMetadata date: 2008-09-01 Additional metadataMetadata reference XHTML: http://www.ga.gov.au/meta/ANZCW0703005761.html Metadata reference XML: http://www.ga.gov.au/meta/ANZCW0703005761.xml Size of dataset: 21.9-41.4 MB depending on the format Scale/resolution: 1:2.5 million |
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SPATIAL INFORMATION FOR THE NATION
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