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Hi Matt,<br>
<br>
It is possible that the data is based on the Australian National Grid using Clarke 1858. See:<br>
<br>
<a href="http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia/australian-national-grid" target="_blank">http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia/australian-national-grid</a>
<br>
<br>
Bruce
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Qgis-user <qgis-user-bounces@lists.osgeo.org> on behalf of Phil (The Geek) Wyatt <phil@wyatt-family.com><br>
<b>Sent:</b> Monday, 9 May 2016 4:01:01 PM<br>
<b>To:</b> 'Matt Boyd'; 'qgis-user'<br>
<b>Subject:</b> Re: [Qgis-user] Projection / Custom CRS help</font>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Here is a good place to start for information on older datums.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia/australian-map-grid<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">But I would be trying AGD66 first as the most likely contender at that time.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Cheers - Phil<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span lang="EN-US" style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Qgis-user [mailto:qgis-user-bounces@lists.osgeo.org]
<b>On Behalf Of </b>Matt Boyd<br>
<b>Sent:</b> Monday, 9 May 2016 2:07 PM<br>
<b>To:</b> qgis-user<br>
<b>Subject:</b> [Qgis-user] Projection / Custom CRS help<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi QGISer's,<o:p></o:p></p>
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<p class="MsoNormal">I've got some data acquired in Australia in 1967. The acquisition reports mention a false easting and northing and a TM projection.<o:p></o:p></p>
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<p class="MsoNormal">I'm assuming TM means Transverse Mercator.<o:p></o:p></p>
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<p class="MsoNormal">It's early 1967 data and doesn't mention AGD66 anywhere. However a some of the reference docs mention measurements in yards and feet.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">All of the historical analysis of the data that I can find dates back to the early 1980's and late 1970's and these all assume AGD66. <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I would like to be able to create a custom CRS that I can load the original data into (or a smaller portion of it) to confirm that the data has been transformed over the years correctly.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Is anyone familiar with pre-AGD66 projections in Australia and any idea how I'd go down this road?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks<o:p></o:p></p>
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<p class="MsoNormal">Matt<o:p></o:p></p>
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