coordinate and mapping

Coordinate Transformations and Geoid Heights For this assignment you will need to download the Geoscience Australia Excel spreadsheets. These have been placed on the unit Blackboard site for your convenience, in Unit Materials > Software. The software is basically an interpolation routine, which needs a “gridfile” to interpolate from. The gridfiles contain shifts (in easting/northing or latitude/longitude) to convert between coordinates in the old and new Australian systems. Two gridfiles are provided. You will need to choose whichever one you think is most appropriate for each question. It is strongly recommended that you read the GDAy user guide before first use.