Hi Grant,

I don't see any problems with GDA 2020. It will be another datum similar to 

I do see many issues arising after GDA 2020 with a subsequent dynamic datum.

When providing a set of coordinates, in addition to the datum, you will need to 
address the date that the coordinates were captured. Most of our current 
software and data sources cannot currently handle this concept.

There will also be many issues arising out of historical data.

This is at a time that many webAPIs, users, etc ignore the requirement for a 
datum to reflect a location.

It will be interesting to see how this plays out. I suggest watching the 
outcome of the ICSM survey and subsequent work.


From: Qgis-user 
on behalf of Grant Boxer <box...@iinet.net.au<mailto:box...@iinet.net.au>>
Date: Wednesday, 24 August 2016 at 18:00
To: "qgis-user@lists.osgeo.org<mailto:qgis-user@lists.osgeo.org>" 
Subject: [Qgis-user] Australias Dynamic datum

Australia plans to change it datum again. See article here 
 and here http://www.icsm.gov.au/gda2020/gmiwg.html. Does anyone see any QGIS 
projection problems with this change? I would assume there will just be an 
update to the EPSG projection data file.

Grant Boxer
Perth, Western Australia

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