[OSGeo Africa] Identify coordinate system
Zoltan Szecsei
zoltans at geograph.co.za
Thu Jul 11 23:56:45 PDT 2019
Hi Manie,
Thanks for the idea.
The current system in use is QND95 - the one you are suggesting (I see)
is from 1976, and its origin is "too close".
(Yes, I still tried it)
Looking at the numeric values of the coords, I am expecting something
with an origin some 500Km West of Doha, and on the Equator.
And then of course I also need to consider the possibility that the
coords in the shapefile are non-sensical, so I'm trying to find out its
source....
Thanks and keep well,
Zoltan
On 2019/07/12 09:23, Hermanus Brynard wrote:
> Zoltan
> Have you tired the
>
> Quatar National Grid <https://epsg.io/28600>
>
>
> EPSG:28600 <https://epsg.io/28600>
>
>
> Manie Brynard
>
> On Thu, Jul 11, 2019 at 6:33 PM Zoltan Szecsei <zoltans at geograph.co.za
> <mailto:zoltans at geograph.co.za>> wrote:
>
> Hi Listers,
> I've been asked o help a school-going daughter of a friend of mine
> in Doha (yes, this is "AfricaList" :-/Â )
> She has been given a shapefile without a projection file. The area
> is Al Wakrah, just South of Doha airport.
>
> The numeric values of the geometry coords are around 560000,
> 2782000 - the second value looked like a distance from the
> Equator, so I tried UTM 39N
> The scaling seems wrong, and it does not align with the coastline
> (QND95) shapefile I have.
> (I also tried EPSG:27039)
>
>
> As you can see, projection-sleuthing is not one of my strengths.
> Can anyone point me in a direction to try and solve this?
>
> Thanks in advance.
>
> Kind regards,
> Zoltan
>
>
> --
>
> =============================================
> Zoltan Szecsei GPrGISc 0031
> Geograph (Pty) Ltd.
> GIS and Photogrammetric Services
>
> P.O. Box 7, Muizenberg 7950, South Africa.
>
> Mobile: +27-83-6004028
> Qatar: +974 5083 2722www.geograph.co.za <http://www.geograph.co.za>
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--
=============================================
Zoltan Szecsei GPrGISc 0031
Geograph (Pty) Ltd.
GIS and Photogrammetric Services
P.O. Box 7, Muizenberg 7950, South Africa.
Mobile: +27-83-6004028
Qatar: +974 5083 2722 www.geograph.co.za
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