ACT Geographic Data Directory
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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
ANZLIC unique identifier: ANZAC0295000999
Title: Vegetation: Upper Cotter Wilderness Area Vegetation
Custodian: ACT Government, Department of Urban Services, Environment ACT
Jurisdiction: Australian Capital Territory
Abstract:
The Ecological Survey of the Upper Cotter Catchemnt Wilderness Area was provided by WRM. The vegetation survey consisted of 1 hard copy map. The map was supplied by Frank Ingwerson and produced by C.E. Helman, P.M. Gilmour, W.S. Osbourne and K. Green Tjhe map displays a vegetation classification Survey of the Upper Cotter Region
ANZLIC search words:
Spatial domain:
Geographic extent polygon: 148.78 -35.71, 148.78 -35.58, 148.89 -35.58, 148.89 -35.71, 148.78 -35.71,
Beginning date: 1997-10-01
Ending date: Current
Progress: Complete
Maintenance and update frequency: Not Known
Access constraints:
restricted - requests required in writing
Lineage:
The Ecological Survey of the Upper Cotter Catchemnt Wilderness Area was provided by WRM. The vegetation survey consisted of 1 hard copy map. The map was an original and was in very poor condition. The map had been pasted to a cardboard backing and the glue had begun to deteriorate. This created air bubbles on the surface of the map. The air larger air bubbles were pricked with a pin and the whole map was then ironed to reduce the distortion of the map. Due to the cost of scanning and the condition of the map, the map was transferred to a stable drafting film for the scanning process. . The transferred sheet had only the polygon data and tic points for geo-referencing. The transfer sheet was then delivered to AGSO for scanning. The contact for the scanning procedure at AGSO was Brian Pashley. Once the scan was completed, Arc exchange files (.e00) were sent to GISTDA. The Arc Exchange files were then imported into Arc View and converted to a Shape file(.shp). These files can be found in G:/GIS/Projects/Vegmap/Wholproj/Scanned/fupcott/upcott1.shp. ` The shape files were then attributed with the existing legend information from the hard copy maps. Each polygon in the shape file was highlighted individually and attributed with the a map code. This was represented by a number or a string of letters (eg. P = E.pauciflora). The map code was used as the common Arc View field for joining the attributes of an Excel table. An example of the .dbf table with the classifications for the Ecological Survey of the Upper Cotter Catchemnt Wilderness Area Vegetation Map. The Excel table is then saved as a .dbf (IV) and imported into Arc View. Once in Arc View the .dbf table is then joined to the shapefile attribute tables. The existing shapefiles are then converted again to produce the final theme(s)with the appropriate attributes
Positional accuracy:
The Shape file were derived from the original 1:25 000 map sheets. Separation sheets of the original maps were scanned and discrepancies were adjusted by hand digitising (0.004 RMSE) The Shape files were created using the ArcView GIS software.
Attribute accuracy:
Attributes were taken directly off the hard copy map sheets.
Logical Consistency:
All polygon contain labels, any errors from scanning were corrected using hand digitising (0.004 RMSE)
Completeness:
Complete
Metadata date: 2007-12-03
Metadata reference: http://indexgeo.net/asdd/act/ANZAC0295000999.html
This dataset description can be discovered via the Australian Spatial Data Directory (ASDD)