[Qgis-user] Projection / Custom CRS help [SEC=UNCLASSIFIED]

[Matt Boyd]

I'll answer my own question here the data I've got looks like it's related
to this..

http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia/australian-national-grid



On Mon, May 9, 2016 at 5:22 PM, Bruce Bannerman <B.Bannerman at bom.gov.au>
wrote:

> Hi Matt,
>
> It is possible that the data is based on the Australian National Grid
> using Clarke 1858. See:
>
>
> http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia/australian-national-grid
>
> Bruce
> ------------------------------
> *From:* Qgis-user <qgis-user-bounces at lists.osgeo.org> on behalf of Phil
> (The Geek) Wyatt <phil at wyatt-family.com>
> *Sent:* Monday, 9 May 2016 4:01:01 PM
> *To:* 'Matt Boyd'; 'qgis-user'
> *Subject:* Re: [Qgis-user] Projection / Custom CRS help
>
>
> Here is a good place to start for information on older datums.
>
>
>
>
> http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia/australian-map-grid
>
>
>
>
> http://www.ga.gov.au/scientific-topics/positioning-navigation/geodesy/geodetic-datums/historical-datums-of-australia
>
>
>
> But I would be trying AGD66 first as the most likely contender at that
> time.
>
>
>
> Cheers - Phil
>
>
>
> *From:* Qgis-user [mailto:qgis-user-bounces at lists.osgeo.org] *On Behalf
> Of *Matt Boyd
> *Sent:* Monday, 9 May 2016 2:07 PM
> *To:* qgis-user
> *Subject:* [Qgis-user] Projection / Custom CRS help
>
>
>
> Hi QGISer's,
>
> I've got some data acquired in Australia in 1967. The acquisition reports
> mention a false easting and northing and a TM projection.
>
> I'm assuming TM means Transverse Mercator.
>
> It's early 1967 data and doesn't mention AGD66 anywhere. However a some of
> the reference docs mention measurements in yards and feet.
>
>
>
> 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.
>
>
>
> 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.
>
>
>
> Is anyone familiar with pre-AGD66 projections in Australia and any idea
> how I'd go down this road?
>
>
>
> Thanks
>
> Matt
>
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