[Qgis-user] Australias Dynamic datum [SEC=UNCLASSIFIED]

[Bruce Bannerman]

Hi Grant,

I don't see any problems with GDA 2020. It will be another datum similar to GDA94.

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.

Bruce




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

Australia plans to change it datum again. See article here http://www.spatialsource.com.au/2016/08/australias-positioning-crisis-media-storm-continues/ 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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