[QGIS-ZA-user] Coordinate conversion from Cape Datum Lo27? to EGS 84

[j.fouche9 at gmail.com]

Thank you FC, what software did you use to do the transformation?

 

Could you explain in a bit more detail?

 

Jordaan Fouche

Portion 11

Van Reenen Country Estate

Van Reenen

3372

Republic of South Africa

 

Tel: +27 (0)82 555 4227

 

From: FC Basson <FC.Basson at westerncape.gov.za> 
Sent: Thursday, March 21, 2024 8:26 PM
To: qgis-za-user at lists.osgeo.org
Cc: j.fouche9 at gmail.com
Subject: Re: [QGIS-ZA-user] Coordinate conversion from Cape Datum Lo27? to
EGS 84

 

Just a slight edit to the Google Maps link:

https://maps.app.goo.gl/VVS9XDfhjp88dXw97

 

And if you prefer OSM:

https://www.openstreetmap.org/?mlat=-26.82808180999955
<https://www.openstreetmap.org/?mlat=-26.82808180999955&mlon=28.591287809999
518#map=12/-26.8281/28.5913>
&mlon=28.591287809999518#map=12/-26.8281/28.5913

 

 

  _____  

From: qgis-za-user <qgis-za-user-bounces at lists.osgeo.org
<mailto:qgis-za-user-bounces at lists.osgeo.org> > on behalf of FC Basson via
qgis-za-user <qgis-za-user at lists.osgeo.org
<mailto:qgis-za-user at lists.osgeo.org> >
Sent: 21 March 2024 20:09
To: qgis-za-user at lists.osgeo.org <mailto:qgis-za-user at lists.osgeo.org>
<qgis-za-user at lists.osgeo.org <mailto:qgis-za-user at lists.osgeo.org> >
Cc: FC Basson <FC.Basson at westerncape.gov.za
<mailto:FC.Basson at westerncape.gov.za> >; j.fouche9 at gmail.com
<mailto:j.fouche9 at gmail.com>  <j.fouche9 at gmail.com
<mailto:j.fouche9 at gmail.com> >
Subject: Re: [QGIS-ZA-user] Coordinate conversion from Cape Datum Lo27? to
EGS 84 

 

I was able to locate the farm and can confirm that the coordinate should be
in LO 29.  



For GIS purposes, we use the rotated coordinate system, so the coordinates
should be X: -40600, Y: -2968350, which converts to geographic coordinate of
Lat: -26.828082, Lon: 28.591288, if you assume the input datum is Cape.  And
here is a link to the location in Google Maps:
https://maps.app.goo.gl/bEwU4pMa35Db2gpNA

 

Regards

 

FC Basson

 

 

  _____  

From: qgis-za-user <qgis-za-user-bounces at lists.osgeo.org
<mailto:qgis-za-user-bounces at lists.osgeo.org> > on behalf of Jordaan Fouche
via qgis-za-user <qgis-za-user at lists.osgeo.org
<mailto:qgis-za-user at lists.osgeo.org> >
Sent: 21 March 2024 17:14
To: qgis-za-user at lists.osgeo.org <mailto:qgis-za-user at lists.osgeo.org>
<qgis-za-user at lists.osgeo.org <mailto:qgis-za-user at lists.osgeo.org> >
Cc: j.fouche9 at gmail.com <mailto:j.fouche9 at gmail.com>  <j.fouche9 at gmail.com
<mailto:j.fouche9 at gmail.com> >
Subject: [QGIS-ZA-user] Coordinate conversion from Cape Datum Lo27? to EGS
84

 

Have a set of old borehole data that I wish to plot in QGIS.

 

They were clearly drilled pre 1994 (Hartebeesthoek) and I am really
struggling to plot them on QGIS. I suspect they may be Cape Datum.

 

The example that I am including is on the farm Rietvley 600 in the Balfour
district.

 

The coordinates are legible as X:2968350;Y: 40600.

 

Can somebody please help me.

 

 

Jordaan Fouche

Portion 11

Van Reenen Country Estate

Van Reenen

3372

Republic of South Africa

 

Tel: +27 (0)82 555 4227

 

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