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<body style="font: 14pt/normal Calibri; font-size-adjust: none; font-stretch: normal;"><div class="GroupWiseMessageBody" id="GroupWiseSection_1513257154000_HvDeventer@csir.co.za_866D0300043C0000A636680E0C43D79B_"><div>Coincidently I stumbled upon this article after you sent this communication earlier this week:</div><div><br></div><div>Waywell T 2009 The effect of various map projections on surface area. PositionIT July: 49 - 55</div><div><br></div><div><a href="https://www.ee.co.za/wp-content/uploads/legacy/PositionIT%202009/VisT-The-effect-of-various.pdf">https://www.ee.co.za/wp-content/uploads/legacy/PositionIT%202009/VisT-The-effect-of-various.pdf</a></div><div><br></div><div>Kind regards,</div><div>Heidi<br></div>
<div class="GroupWiseMessageBody" id="GroupWiseSection_1513257153000_HvDeventer@csir.co.za_866D0300043C0000A636680E0C43D79B_"><span class="GroupwiseReplyHeader">>>> Zoltan <zoltans@geograph.co.za> 12/12/2017 16:35 >>><br></span><div><span style="background-color: rgb(255, 255, 255);" bgcolor="#FFFFFF" text="#000000">>
Hi Heidi,<div><br></div><div>
Thanks for the confirmation.</div><div>
</div><div>
Regards,</div><div>
Zoltan</div><div>
</div>
<div class="moz-cite-prefix">On 2017/12/12 15:57, Heidi Van Deventer
wrote:<br>
</div>
<blockquote cite="mid:5A2FE03F020000D20012B040@pta-imo.csir.co.za" type="cite">
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<div>Hi Zoltan</div>
<div><br>
</div>
<div>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.</div>
<div><br>
</div>
<div>Kind regards,</div>
<div>Heidi<br>
</div>
<div><span class="GroupwiseReplyHeader">>>> Zoltan
<a class="moz-txt-link-rfc2396E" href="mailto:zoltans@geograph.co.za"><zoltans@geograph.co.za></a> 12/12/2017 14:39 >>><br>
</span>
<div><span style="background-color: rgb(255, 255, 255);" bgcolor="#FFFFFF" text="#000000">> Hi Africa-listers,
<div><br>
</div>
<div> I want to set an informal assignment for my
candidates, to help them recognise common CRSes used in
South Africa (South, not Southern).</div>
<div> </div>
<div> Off the top of my head I can think of:</div>
<ul>
<li>Non projected Lat Long</li>
<li>Lo system (North and/or South facing) projected from
either Clarke 1880 [if very old] or WGS84</li>
<li>UTM33-36S</li>
</ul>
Are there any others<u> in common</u> use?
<div><br>
</div>
<div> If so, by whom?</div>
<div> </div>
<div> Thanks and keep well,</div>
<div> Zoltan</div>
<div> </div>
--
<pre class="moz-signature" cols="72">=============================================
Zoltan Szecsei GPrGISc 0031
Geograph (Pty) Ltd.
GIS and Photogrammetric Services
P.O. Box 7, Muizenberg 7950, South Africa.
Mobile: +27-83-6004028
Fax: +27-86-6115323 <a class="moz-txt-link-abbreviated" href="http://pta-smg2.csir.co.za:32224/?dmVyPTEuMDAxJiZkYmFhNDVhZmY3M2JkOGViYz01QTJGRTkxQ18yMDA3OV8xMjI5OF8xJiY5NmFlYmRmYjg0MzNiMWI9MTMzMyYmdXJsPWh0dHAlM0ElMkYlMkZwdGEtc21nMyUyRWNzaXIlMkVjbyUyRXphJTNBMzIyMjQlMkYlM0ZkbVZ5UFRFdU1EQXhKaVk1T1RrM01HWTJZV00xTURjeVpHTTBZajAxUVRKR1JETTRNRjh5TURZNE1GODRNRE00WHpFbUpqbGhZekU1WXpJeU1tWmhPR015TWoweE16TXpKaVoxY213OWFIUjBjQ1V6UVNVeVJpVXlSbmQzZHlVeVJXZGxiMmR5WVhCb0pUSkZZMjhsTWtWNllRJTNEJTNE" moz-do-not-send="true">www.geograph.co.za</a>
=============================================</pre>
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<pre wrap="">_______________________________________________
Africa mailing list
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You can UNSUBSCRIBE at <a class="moz-txt-link-freetext" href="http://pta-smg2.csir.co.za:32224/?dmVyPTEuMDAxJiZkZGY2MDRiZWZmM2FjZmViOT01QTJGRTkxQ18yMDA3OV8xMjI5OF8xJiZhMzViNDhjZTQ1ODc4NGQ9MTMzMyYmdXJsPWh0dHBzJTNBJTJGJTJGbGlzdHMlMkVvc2dlbyUyRW9yZyUyRm1haWxtYW4lMkZsaXN0aW5mbyUyRmFmcmljYQ==">https://lists.osgeo.org/mailman/listinfo/africa</a></pre>
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<pre class="moz-signature" cols="72">--
=============================================
Zoltan Szecsei GPrGISc 0031
Geograph (Pty) Ltd.
GIS and Photogrammetric Services
P.O. Box 7, Muizenberg 7950, South Africa.
Mobile: +27-83-6004028
Fax: +27-86-6115323 <a class="moz-txt-link-abbreviated" href="http://pta-smg2.csir.co.za:32224/?dmVyPTEuMDAxJiZkYWFjMWZiY2EyM2E4ZGZkOD01QTJGRTkxQ18yMDA3OV8xMjI5OF8xJiY0MmVmNzhhZWYxODczNTY9MTMzMyYmdXJsPWh0dHAlM0ElMkYlMkZ3d3clMkVnZW9ncmFwaCUyRWNvJTJFemE=">www.geograph.co.za</a>
=============================================</pre>
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