Note: this dataset description is metadata (data about data) which describes the actual dataset in accordance with the ANZLIC (Australia New Zealand Land Information Council) Core Metadata Guidelines Version 2 (February 2001)
ANZLIC unique identifier: ANZNS0404000873
Title: NEW SOUTH WALES DTDB TRANSPORTATION THEME
Custodian: Department of Information Technology and Management (LPI)
Jurisdiction: New South Wales
The digital Tramsportation Theme is contained within the NSW DTDB Cultural Layer. There are 1105 Digital cultural data partitions covering the area of New South Wales. This theme contains the transport network as displayed on the NSW topographic map archive. The partitions correspond to 1:25000, 1:50000 and 1:100000 mapping areas represented on the Australian National Map Sheet Breakdown System.
- GEOSCIENCES Mapping
- LAND Geography Management
- LAND Topography
- TRANSPORTATION Land
- Geographic extent name:
- NEW SOUTH WALES - State or Territory - New South Wales
- Geographic extent polygon:
- 141 -37.5, 154 -37.5, 154 -28, 141 -28, 141 -37.5
Note: The format for each Geographic extent name is: Name - Identifier - Category - Jurisdiction (as appropriate)
Geographic bounding box:
The bounding box encloses the maximum extents of the dataset. There may be voids or gaps within the bounding box, depending on the defined coverage of the dataset. Outer bounding rectangle as Latitude/Longitude coordinates based on the WGS84 datum (expressed as both Degrees Minutes Seconds and as decimal Degrees):
- North bounding latitude: 28 00 00.0 S (-28)
- South bounding latitude: 37 30 00.0 S (-37.5)
- East bounding longitude: 154 00 00.0 E (154)
- West bounding longitude: 141 00 00.0 E (141)
Lineage:
Topographic line features captured from photogrammetric compilations prepared from Aerial Photography, Field Completion and Cartographic Enhancement by the Land Information Centre. Scanned and vectorised on Optigraphics 3100 to ODF files for editing using MEWS software then translated to Genamap Import files for final editing. Data Quality Assured and progressively upgraded through comparison with current maps, directories and aerial photography by the Land Information Centre. Limited update to country towns with populations exeeding 400 persons utilising 1996 colour aerial photography at a nominal photo scale of 1:16000, and through locally dervied information where possible. Upgrade program commenced in 1998 utilising scanned orthophoto imagery produced at a scale of 1:50000 and a small amount of mobile GPS entry.
Positional accuracy:
Initial digital collection is within 0.3mm of map transparency at scales of 1:25000, 1:50000 and 1:100000.
HORIZONTAL ACCURACY - Ten percent of well defined points tested will not be in error by more than 0.5mm of the scale of the source document.
Subsequent data alterations or additions are reflected by their capture code ranging from orthophoto trace or mobile GPS fixation for recent updated data with an accuracy of 12.5 metres to an estimate of true position with an accuracy of up to 100 metres.
Attribute accuracy:
Tag syntax is checked against the Surveyor-General's Department Digital Topographic Codes for the Cultural Layer comprising the Miscellaneous Cultural Facility, Transport and Utillity Themes.
Logical consistency:
All features are labelled
Lines intersect at nodes
Lines do not unintentionally cross
All lines exist
All duplications are elliminated
Lines do not undershoot or overshoot
All features are labelled
All polygons are closed
Data partitions are edge matched against adjoining partitions
Completeness:
Data content is generally consistent with the topographic map archive . Spatial data is complete for the entire data set and no data thresholds are used.
This dataset description complies with ANZLIC Core Metadata Guidelines Version 2 (February 2001) and XML DTD ANZMETA NSW NRIMS Page 1 v1.0 which extends ANZMETA 1.3 (metadata validation date: 2004-07-11)