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As Australia moves towards the adoption of the new Geocentric Datum of Australia (GDA94), each State and Territory will have to implement a process for the transformation of digital spatial data. Using a detailed distortion model, the Tasmanian Office of the Surveyor General has developed a transformation grid that will allow data to be moved from the current to the new datum in a simple, accurate and efficient manner.
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Collier et al. (1999) studied this question.
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