[OSGeo Africa] Kathu coordinate system
walter.s at sa-solutions.co.za
Thu Jan 30 05:00:02 PST 2014
I agree with Gavin...since it is from a surveyor and from pre-1999...
From: africa-bounces at lists.osgeo.org [mailto:africa-bounces at lists.osgeo.org]
On Behalf Of Gavin Fleming
Sent: 30 January 2014 02:18 PM
To: africa at lists.osgeo.org
Subject: Re: [OSGeo Africa] Kathu coordinate system
Looks like it's south-oriented transverse mercator with a central meridian
of 23 and an offset of some nice round number > 3000000 on the SO x axis (or
a local reference latitude) and it would likely be on the Cape datum. A bit
of playing around these parameters will hopefully position it right.
Does searching on the khathu system not turn up anything?
On 30/01/2014 13:56, Hanlie Pretorius wrote:
> I a hand-drawn survey diagram that I need to reproduce in QGIS. The
> area is in the Northen Cape, close to the 23° E longitude.
> The diagram was done in 1968 and its coordinate system is specified as
> 'Kathu System'. The y coordinates are given first, are all positive
> and they range from about 23 000 to 49 000. The x coordinates are
> given second and they range from +31 000 to -153 000.
> Can anyone tell me what the specifications for this coordinate system
> would be? I.e. the information I would need to create a WKT or proj4
> specification for the CRS.
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> Africa at lists.osgeo.org
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