F6717F9EC57FC643E0532144CD9B3C4EEnglishData Requests OfficerDepartment of Lands, Planning and EnvironmentGeospatial Services Unit (on behalf of department)Datarequests.DLPE@nt.gov.au2023-03-09AS/NZS ISO 19115 Geographic Information - Metadata, ANZLIC Metadata Profile1.0 Land Units of an area of Coolibah Station, Victoria River District1989-01-01 This polygon spatial dataset provides information on the land unit boundaries of Coolibah Station Victoria River District, Victoria River District and describes dominant landform, soils and vegetation. The survey area of 225.6 km2 is located approximately 53 km east of Timber Creek and 184 km south west of Katherine. The original field survey was undertaken in 1989 at a mapping scale of 1:50,000. Core attributes describing the land units, as defined by this department, were added to the spatial dataset in February 2023. You are licensed to use the geospatial products on the terms and conditions set out in: Creative Commons Attribution 4.0 International Public License (CC BY 4.0) at: https://creativecommons.org/licenses/by/4.0/legalcode. If you do not agree to the terms and conditions you must not use the geospatial products. You are free to copy, communicate and adapt the licensed material, provided that you abide by the licence terms (including Attribution) and attribute the licensed material using the statement: Supplied by the Department of Environment, Parks and Water Security. Copyright Northern Territory Government. English-15.521-15.384130.93131.0711989-01-012023-01-24datasetnot knownComplete0not knownGIS editing tools were used to rectify all overshoots and undershoots in line work. Polygon topology rules applied are; must not overlap, must not have gaps and each polygon has only one label.0not knownPOLYGON DATA Scanned map georeferenced using control points marked on original hardcopy maps. Control points include creek lines, drainage systems and other topographic features. Depending on the nature of the landscape (the number of control points) positional accuracy may vary. Positional accuracy generally considered moderate. POINT DATA Survey teams navigated during field operations with topographic maps, aerial photographs and prismatic compass. Point source locations marked on aerial photography in the field. Positional accuracy considered within 300m but generally below 200m depending on the terrain. Site coordinates derived by transferring site locations from aerial photographs to topographic maps and coordinates calculated. In some cases, sites have been georeferenced directly from aerial photography to Google Earth Web Map Server in MapInfo or ArcGIS. 0not knownAttributes assigned according to the dominant feature. For example, where ten sites have been grouped to describe a particular map unit and two different soils described from these sites then the dominant soil is chosen. The department has assigned a list of core attribute values, described in the Data Dictionary below, to each polygon. The attribute naming format uses 10 characters with no spaces to be suitable for an ESRI shape-file format. An alias attribute name is applied to an ESRI file geo-database format. 0Original map unit boundaries delineated from aerial photographs and stereoscope interpretation. Map units transferred to clean dyeline sheets via a Mapograph reflector projector and were interpreted by a land assessment officer in 2023 at 1:50,000. Original maps were hardcopy only. With the advent of geographic information systems polygons were digitised by rectifying the original hard copy maps. Original dyeline sheet was scanned as a one bit TIFF file. Within ARCMAP the raster data was then cleaned up using ARCSCAN. The cleaned raster was georeferenced then vectorized. Field data (site data) described and classified according to national standards at the time of capture. Map unit polygons collected via geographic information system (ESRI ArcGIS). Core landform and soil attributes attached to map units with additional attributes unique to individual surveys.