[OSGeo Africa] Fwd: Identify coordinate system - SOLVED

[Tim Sutton]

Hi

Great discussion anyway and very nice that you posted the solution too so we didn’t all toss and turn at night wondering what the answer was :-)

Regards

Tim

> On 13 Jul 2019, at 10:40, Zoltan Szecsei <zoltans at geograph.co.za> wrote:
> 
> HI List/Tim,
> Thanks to all who responded.
> 
> My first guess, UTM39N, based on the numeric value of the coordinates and the fact that the area was somewhere in Doha, was correct.
> But, when I looked at the result, the polygons did not match nicely with the Qatar coastline.
> 
> Today I get confirmation from the original source, that it is in fact UTM39N, and.....wait for it...(drum-roll).......the polygons represent CLOUD COVER.    (Doh! of course they don't follow the coastline)
> 
> So, it is obviously never too late to learn that asking what the vectors represent, might be key to solving your problem.
> 
> Big thanks again to all who responded.
> Kind regards,
> Zoltan
> 
> 
> On 2019/07/12 21:30, Tim Sutton wrote:
>>> 
>> Hi
>> 
>> Also consider that some countries (e.g. UK) use a false easting and northing so that the CRS origin starts from 0,0 just outside the sovereign territory….
>> 
>> Regards
>> 
>> Tim
>> —
>> 
>> 
>> <KartozaNewLogoThumbnail.jpg>
>> 
>> 
>> 
>> 
>> 
>> 
>> Tim Sutton
>> 
>> Co-founder: Kartoza
>> Ex Project chair: QGIS.org <http://qgis.org/>
>> 
>> Visit http://kartoza.com <http://kartoza.com/> to find out about open source:
>> 
>> Desktop GIS programming services
>> Geospatial web development
>> GIS Training
>> Consulting Services
>> 
>> Skype: timlinux 
>> IRC: timlinux on #qgis at freenode.net <http://freenode.net/>
>> 
>> I'd love to connect. Here's my calendar link <https://calendly.com/timlinux> to make finding time easy.
>> 
>> 
>> 
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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 <http://www.geograph.co.za/>
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—









Tim Sutton

Co-founder: Kartoza
Ex Project chair: QGIS.org

Visit http://kartoza.com <http://kartoza.com/> to find out about open source:

Desktop GIS programming services
Geospatial web development
GIS Training
Consulting Services

Skype: timlinux 
IRC: timlinux on #qgis at freenode.net

I'd love to connect. Here's my calendar link <https://calendly.com/timlinux> to make finding time easy.

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