Authors / CoAuthors
Abstract
Externally sourced data. Based on the statewide 1:25,000 conrours coverage (10m contours) with additional processes forcing drainage. Additional processes performed on the completed DEM so metadata does not totally mirror the 10m contour dataset. Accuracy remains at half a contour interval (+-5m). Cell size is 25m. Supplied by TAS Dept. of Primary Industries, Water and Environment (DIPWE)
Product Type
dataset
eCat Id
66161
Contact for the resource
Custodian
Owner
Custodian
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
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- DEM topographic
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- AU-TAS
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Topology
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- Published_Internal
Publication Date
2007-01-01T00:00:00
Creation Date
Security Constraints
Legal Constraints
Special, MOU, etc.
Access - restricted
Use - license
Status
Purpose
Maintenance Information
continual
Topic Category
elevation
Series Information
Lineage
Some data was captured directly from aerial photography by digital photogrammetric plotters using 3DD software with recorded X, Y, Z coordinates. This data was then converted to Microstation DGN format. For the majority of information, the data was captured from aerial photography by graphical photogrammetric plotters. For the majority of lines, the components of the printed maps were then scanned, vectorised and georeferenced. The data was then taken into Arcinfo and attributed before being stored in the LIST Database. Revisions of data are acquired in Microstation DGN format using a softcopy photogammetrical workstation capturing 3D data. The data has been converted to ArcInfo and attributed before being stored in the LIST Database. Lineage mirrors that of the 10m contours data up to this point. The 25m DEM incorporates additional drainage information to force contours. Additional processes were also performed. Accuracy remains at 5m (or half a contour interval).
Parent Information
Extents
[-44.0, -39.2, 143.5, 149.0]
Reference System
GDA94 / MGA zone 55 (EPSG:28355)
Spatial Resolution
Service Information
Associations
Downloads and Links
Source Information
This edition has been created because the previous editions were generated from contour data which contained numerous elevation attribute errors plus some spatial conflicts with the coastline and other waterbody features. These errors had not been identified at that time but have now been corrected for processing the 3rd Edition DEM