[OSGeo Africa] CRS in use in South Africa

Brighton Chamunorwa chamunorwa.brighton at gmail.com
Thu Dec 14 11:22:02 PST 2017


Anyone who have experiences to share about the *QGIS Indicatrix mapper*. I
wish to use it for illustrating some of the map projections distortions
highlighted in the article.

On Thu, Dec 14, 2017 at 3:37 PM, Zoltan <zoltans at geograph.co.za> wrote:

> Hi Heidi,
> Yes, I also "stumbled across it" during some google researches yesterday.
> It's a good read, and thanks for making the extra effort to tell me about
> it.
> Kind r
> egards,
> Zoltan
>
>
> On 2017/12/14 15:13, Heidi Van Deventer wrote:
>
> Coincidently I stumbled upon this article after you sent this
> communication earlier this week:
>
> Waywell T 2009 The effect of various map projections on surface area.
> PositionIT July: 49 - 55
>
> https://www.ee.co.za/wp-content/uploads/legacy/PositionIT%202009/VisT-The-
> effect-of-various.pdf
>
> Kind regards,
> Heidi
> >>> Zoltan <zoltans at geograph.co.za> <zoltans at geograph.co.za> 12/12/2017
> 16:35 >>>
> > Hi Heidi,
>
> Thanks for the confirmation.
> Regards,
> Zoltan
> On 2017/12/12 15:57, Heidi Van Deventer wrote:
>
> Hi Zoltan
>
> we use the Albers Equal Area conical projection for South Africa with the
> central meridian at 25°E, parallels 24°S and 33° S, spheroid and datum =
> WGS84 for calculating the extent of ecosystems at a national scale in the
> National Biodiversity Assessment for 2018.
>
> Kind regards,
> Heidi
> >>> Zoltan <zoltans at geograph.co.za> <zoltans at geograph.co.za> 12/12/2017
> 14:39 >>>
> > Hi Africa-listers,
>
> I want to set an informal assignment for my candidates, to help them
> recognise common CRSes used in South Africa (South, not Southern).
> Off the top of my head I can think of:
>
>    - Non projected Lat Long
>    - Lo system (North and/or South facing) projected from either Clarke
>    1880 [if very old] or WGS84
>    - UTM33-36S
>
> Are there any others* in common* use?
>
> If so, by whom?
> Thanks and keep well,
> Zoltan
> --
>
> =============================================
> Zoltan Szecsei GPrGISc 0031
> Geograph (Pty) Ltd.
> GIS and Photogrammetric Services
>
> P.O. Box 7, Muizenberg 7950, South Africa.
>
> Mobile: +27-83-6004028 <083%20600%204028>
> Fax:    +27-86-6115323 <086%20611%205323>     www.geograph.co.za <http://pta-smg2.csir.co.za:32224/?dmVyPTEuMDAxJiZkYmFhNDVhZmY3M2JkOGViYz01QTJGRTkxQ18yMDA3OV8xMjI5OF8xJiY5NmFlYmRmYjg0MzNiMWI9MTMzMyYmdXJsPWh0dHAlM0ElMkYlMkZwdGEtc21nMyUyRWNzaXIlMkVjbyUyRXphJTNBMzIyMjQlMkYlM0ZkbVZ5UFRFdU1EQXhKaVk1T1RrM01HWTJZV00xTURjeVpHTTBZajAxUVRKR1JETTRNRjh5TURZNE1GODRNRE00WHpFbUpqbGhZekU1WXpJeU1tWmhPR015TWoweE16TXpKaVoxY213OWFIUjBjQ1V6UVNVeVJpVXlSbmQzZHlVeVJXZGxiMmR5WVhCb0pUSkZZMjhsTWtWNllRJTNEJTNE>
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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 <083%20600%204028>
> Fax:    +27-86-6115323 <086%20611%205323>     www.geograph.co.za <http://pta-smg2.csir.co.za:32224/?dmVyPTEuMDAxJiZkYWFjMWZiY2EyM2E4ZGZkOD01QTJGRTkxQ18yMDA3OV8xMjI5OF8xJiY0MmVmNzhhZWYxODczNTY9MTMzMyYmdXJsPWh0dHAlM0ElMkYlMkZ3d3clMkVnZW9ncmFwaCUyRWNvJTJFemE=>
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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 <083%20600%204028>
> Fax:    +27-86-6115323 <086%20611%205323>     www.geograph.co.za
> =============================================
>
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-- 







*Brighton ChamunorwaM.Sc StudentGIS and Remote Sensing DepartmentUniversity
of Fort HareCell: 079 863 8212*
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