d2fdc6cb-369c-40a0-badf-f8384464aea6 urn:uuid en UTF-8 nonGeographicDataset nonGeographicDataset 2025-06-23T05:55:22 creation ISO 19115 2016 Cocos Coast Outline - 2011 d2fdc6cb-369c-40a0-badf-f8384464aea6 A coastline polygon was created from the 2011 digital elevation model (DEM) by Geoscience Australia using ArcMap. First, all the DEM pixels were reclassified using the ‘reclassify’ tool to give the value of zero, then using the ‘raster to polygon tool’ the coastline was generated. When compared to the 1:30,000 coastline, and the 2011 orthophotography, the accuracy is variable. As the LiDAR survey was conducted in some locations at low tide, the 2011 outline may include areas that are not actually considered island, such as sandbanks in shallow lagoon areas. The 2011 coastline does not follow the edge of ‘land’ as closely compared to the 2010 version in areas with extensive sand flats. The zero elevation level for survey used the CKIHD. The closure of the North Keeling lagoon is clear between the datasets. <a href="https://www.infrastructure.gov.au/utilities/disclaimer.aspx">Disclaimer</a> {"type":"MultiPolygon","coordinates":[[[[96.57943725585939,-12.420053979373555],[96.57943725585939,-11.587238828189034],[97.13424682617189,-11.587238828189034],[97.13424682617189,-12.420053979373555],[96.57943725585939,-12.420053979373555]]]]} 96.57943725585939 97.13424682617189 -12.420053979373556 -11.587238828189035 Cocos Coast Outline - 2011 documentDigital A coastline polygon created from the 2011 digital elevation model (DEM) SHP