<div dir="ltr">I'll answer my own question here the data I've got looks like it's related to this..<div><br></div><div><a href="http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia/australian-national-grid">http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia/australian-national-grid</a><br></div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, May 9, 2016 at 5:22 PM, Bruce Bannerman <span dir="ltr"><<a href="mailto:B.Bannerman@bom.gov.au" target="_blank">B.Bannerman@bom.gov.au</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">





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Hi Matt,<br>
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It is possible that the data is based on the Australian National Grid using Clarke 1858. See:<br>
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<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>
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<br>
Bruce
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<div dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Qgis-user <<a href="mailto:qgis-user-bounces@lists.osgeo.org" target="_blank">qgis-user-bounces@lists.osgeo.org</a>> on behalf of Phil (The Geek) Wyatt <<a href="mailto:phil@wyatt-family.com" target="_blank">phil@wyatt-family.com</a>><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.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><a href="http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia/australian-map-grid" target="_blank">http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia/australian-map-grid</a><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><a href="http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia" target="_blank">http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia</a><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></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.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Cheers - Phil<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></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:<a href="mailto:qgis-user-bounces@lists.osgeo.org" target="_blank">qgis-user-bounces@lists.osgeo.org</a>]
<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<u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Hi QGISer's,<u></u><u></u></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.<u></u><u></u></p>
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<p class="MsoNormal">I'm assuming TM means Transverse Mercator.<u></u><u></u></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.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></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. <u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></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.<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></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?<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Thanks<u></u><u></u></p>
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<p class="MsoNormal">Matt<u></u><u></u></p>
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