Hi Preparing a talk for FOSS4G Europe in Tartu (see you there if you come!), I found that the 3 transformations in EPSG from WGS 84 to GDA2020 (2, 3 and 4) they all have 3m accuracy. That is not giving a clue to PROJ about which one is better.
(2) is a null Helmert transformation. (3) is a Helmert with 7 numbers (4) uses a grid. Is there anybody from the Australian agency here? Is there any reason why the three transformations have the same accuracy? I would expect different values. I looks like a copy-paste issue. The same happens with the transformation from WGS 84 to GDA94. Thanks, Javier .___ ._ ..._ .. . ._. .___ .. __ . _. . __.. ... .... ._ .__
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