<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<!-- Template generated by on 11:07:01 Friday, 12 July 2019 -->
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<style type="text/css">P.ImprintUniqueID {
MARGIN: 0cm 0cm 0pt
}
LI.ImprintUniqueID {
MARGIN: 0cm 0cm 0pt
}
DIV.ImprintUniqueID {
MARGIN: 0cm 0cm 0pt
}
TABLE.ImprintUniqueIDTable {
MARGIN: 0cm 0cm 0pt
}
DIV.Section1 {
page: Section1
}
</style>
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:Wingdings;
panose-1:5 0 0 0 0 0 0 0 0 0;}
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman",serif;
color:black;}
h2
{mso-style-priority:9;
mso-style-link:"Heading 2 Char";
mso-margin-top-alt:auto;
margin-right:0cm;
mso-margin-bottom-alt:auto;
margin-left:0cm;
font-size:18.0pt;
font-family:"Times New Roman",serif;
color:black;
font-weight:bold;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0cm;
mso-margin-bottom-alt:auto;
margin-left:0cm;
font-size:12.0pt;
font-family:"Times New Roman",serif;
color:black;}
pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0cm;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";
color:black;}
p.msonormal0, li.msonormal0, div.msonormal0
{mso-style-name:msonormal;
mso-margin-top-alt:auto;
margin-right:0cm;
mso-margin-bottom-alt:auto;
margin-left:0cm;
font-size:12.0pt;
font-family:"Times New Roman",serif;
color:black;}
span.gmaildefault
{mso-style-name:gmail_default;}
span.Heading2Char
{mso-style-name:"Heading 2 Char";
mso-style-priority:9;
mso-style-link:"Heading 2";
font-family:"Calibri Light",sans-serif;
color:#2E74B5;}
span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:Consolas;
color:black;}
span.EmailStyle23
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body bgcolor="white" lang="EN-ZA" link="blue" vlink="purple">
<div class="WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Hi Zoltan.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">Do you know approximately where the shape file is supposed to be relative to other datasets? Can you find common points between this
unknown dataset and the others you have in that area? If there is common data, you could try a helmert transformation which should give you all the various parameters (e.g. scale swing rotation…..) and you could manually input these for your data and see
where it plots. If it matches your data, then you could just manually define it using your known dataset. I assume there’s no metadata/xml file associated with the shapefile that can give a hint as to its origin also…?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US">If not, then happy hunting
</span><span style="font-size:11.0pt;font-family:Wingdings;color:#1F497D;mso-fareast-language:EN-US">J</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Regards<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Abraham Parbhunath<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<div></div>
</div>
<table style="WIDTH: 600px; BORDER-COLLAPSE: collapse" class="ImprintUniqueIDTable" border="0" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td width="600"><a href="http://www.eskom.co.za/sites/idm/Residential/Pages/Residential0602-4556.aspx" target=""><img width="600" height="90" style="border: 0px Solid ; " src="cid:imagef01a7a.JPG@d236f831.46a6b63d"></a></td>
</tr>
<tr>
<td bgcolor="#003896" width="600">
<table style="WIDTH: 100%; BORDER-COLLAPSE: collapse" class="ImprintUniqueIDTable" border="0" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td style="WIDTH: 176px" bgcolor="#003896"><a href="http://www.eskom.co.za" target=""><img width="120" height="30" style="border: 0px Solid ; " src="cid:image380443.JPG@81ec27f6.4fb748d0"></a></td>
<td style="WIDTH: 168px" bgcolor="#003896"><a href="http://www.facebook.com/EskomSouthAfrica" target=""><img width="120" height="30" style="border: 0px Solid ; " src="cid:image4ba5a8.JPG@d88a807a.4eb92dc4"></a></td>
<td bgcolor="#003896"><a href="http://twitter.com/Eskom_SA" target=""><img width="120" height="30" style="border: 0px Solid ; " src="cid:image2c0a61.JPG@63ad5af0.439f0677"></a></td>
<td bgcolor="#003896"><a href="http://www.instagram.com/eskom_hld_soc_ltd/" target=""><img width="120" height="30" style="border: 0px Solid ; " src="cid:imagef03896.JPG@09ed4a42.4390579a"></a></td>
<td bgcolor="#003896"><a href="http://www.youtube.com/user/EskomOfficialSite" target=""><img width="120" height="30" style="border: 0px Solid ; " src="cid:imagedfe85b.JPG@57a0c08b.47a07736"></a></td>
</tr>
</tbody>
</table>
</td>
</tr>
</tbody>
</table>
<br>
<br>
<div class="WordSection1">
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext">From:</span></b><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:windowtext"> Africa <africa-bounces@lists.osgeo.org>
<b>On Behalf Of </b>Zoltan Szecsei<br>
<b>Sent:</b> Friday, 12 July 2019 09:12<br>
<b>To:</b> africa@lists.osgeo.org<br>
<b>Subject:</b> Re: [OSGeo Africa] Identify coordinate system<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Arial",sans-serif">Hmmm....Ja.</span><br>
<span style="font-family:"Arial",sans-serif">But querying the source of the data might save all of us from getting a hard-earned 'Sherlock Holmes' badge :-)</span><o:p></o:p></p>
<div>
<p class="MsoNormal">On 2019/07/12 10:02, Hermanus Brynard wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<div>
<p class="MsoNormal">Zoltan<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">You mention 500k makes me think there could be a UTM transformation which usully adds a 500000m easting or westing and 10 000 000m northing to avoid negative numbers.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">Can you send me the shapefile.<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Manie<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal">On Fri, Jul 12, 2019 at 8:57 AM Zoltan Szecsei <<a href="mailto:zoltans@geograph.co.za">zoltans@geograph.co.za</a>> wrote:<o:p></o:p></p>
</div>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-family:"Arial",sans-serif">Hi Manie,</span><br>
<span style="font-family:"Arial",sans-serif">Thanks for the idea.<br>
</span><br>
<span style="font-family:"Arial",sans-serif">The current system in use is QND95 - the one you are suggesting (I see) is from 1976, and its origin is "too close".</span><br>
<span style="font-family:"Arial",sans-serif">(Yes, I still tried it)<br>
</span><br>
<span style="font-family:"Arial",sans-serif">Looking at the numeric values of the coords, I am expecting something with an origin some 500Km West of Doha, and on the Equator.<br>
</span><br>
<span style="font-family:"Arial",sans-serif">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....</span><br>
<span style="font-family:"Arial",sans-serif"><br>
</span><br>
<span style="font-family:"Arial",sans-serif">Thanks and keep well,</span><br>
<span style="font-family:"Arial",sans-serif">Zoltan</span><o:p></o:p></p>
<div>
<p class="MsoNormal">On 2019/07/12 09:23, Hermanus Brynard wrote:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<div>
<div>
<p class="MsoNormal">Zoltan<o:p></o:p></p>
</div>
<div>
<p class="MsoNormal">Have you tired the <o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal"><a href="https://epsg.io/28600" target="_blank"><span class="gmaildefault">Quatar National Grid
</span></a><o:p></o:p></p>
</div>
<h2 id="gmail-m_-1508674156475193765gmail-crs-title"><span style="color:#9DA4B4"><a href="https://epsg.io/28600" target="_blank">EPSG:28600</a></span><o:p></o:p></h2>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<p class="MsoNormal">M<span class="gmaildefault">anie Brynard</span><o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal">On Thu, Jul 11, 2019 at 6:33 PM Zoltan Szecsei <<a href="mailto:zoltans@geograph.co.za" target="_blank">zoltans@geograph.co.za</a>> wrote:<o:p></o:p></p>
</div>
<blockquote style="border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm">
<div>
<p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Hi Listers,</span><br>
<span style="font-family:"Arial",sans-serif">I've been asked o help a school-going daughter of a friend of mine in Doha (yes, this is "AfricaList" :-/ )</span><br>
<span style="font-family:"Arial",sans-serif">She has been given a shapefile without a projection file. The area is Al Wakrah, just South of Doha airport.<br>
</span><br>
<span style="font-family:"Arial",sans-serif">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</span><br>
<span style="font-family:"Arial",sans-serif">The scaling seems wrong, and it does not align with the coastline (QND95) shapefile I have.<br>
</span>(I also tried EPSG:27039)<br>
<span style="font-family:"Arial",sans-serif"><br>
</span><br>
<span style="font-family:"Arial",sans-serif">As you can see, projection-sleuthing is not one of my strengths.</span><br>
<span style="font-family:"Arial",sans-serif">Can anyone point me in a direction to try and solve this?<br>
</span><br>
Thanks in advance.<br>
<br>
Kind regards,<br>
Zoltan <o:p></o:p></p>
<p><o:p> </o:p></p>
<pre>-- <o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>=============================================<o:p></o:p></pre>
<pre>Zoltan Szecsei GPrGISc 0031<o:p></o:p></pre>
<pre>Geograph (Pty) Ltd.<o:p></o:p></pre>
<pre>GIS and Photogrammetric Services<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>P.O. Box 7, Muizenberg 7950, South Africa.<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Mobile: +27-83-6004028<o:p></o:p></pre>
<pre>Qatar: +974 5083 2722 <a href="http://www.geograph.co.za" target="_blank">www.geograph.co.za</a><o:p></o:p></pre>
<pre>=============================================<o:p></o:p></pre>
</div>
<p class="MsoNormal">_______________________________________________<br>
Africa mailing list<br>
<a href="mailto:Africa@lists.osgeo.org" target="_blank">Africa@lists.osgeo.org</a><br>
You can UNSUBSCRIBE at <a href="https://lists.osgeo.org/mailman/listinfo/africa" target="_blank">
https://lists.osgeo.org/mailman/listinfo/africa</a><o:p></o:p></p>
</blockquote>
</div>
<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>Africa mailing list<o:p></o:p></pre>
<pre><a href="mailto:Africa@lists.osgeo.org" target="_blank">Africa@lists.osgeo.org</a><o:p></o:p></pre>
<pre>You can UNSUBSCRIBE at <a href="https://lists.osgeo.org/mailman/listinfo/africa" target="_blank">https://lists.osgeo.org/mailman/listinfo/africa</a><o:p></o:p></pre>
</blockquote>
<pre>-- <o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>=============================================<o:p></o:p></pre>
<pre>Zoltan Szecsei GPrGISc 0031<o:p></o:p></pre>
<pre>Geograph (Pty) Ltd.<o:p></o:p></pre>
<pre>GIS and Photogrammetric Services<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>P.O. Box 7, Muizenberg 7950, South Africa.<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Mobile: +27-83-6004028<o:p></o:p></pre>
<pre>Qatar: +974 5083 2722 <a href="http://www.geograph.co.za" target="_blank">www.geograph.co.za</a><o:p></o:p></pre>
<pre>=============================================<o:p></o:p></pre>
</div>
<p class="MsoNormal">_______________________________________________<br>
Africa mailing list<br>
<a href="mailto:Africa@lists.osgeo.org" target="_blank">Africa@lists.osgeo.org</a><br>
You can UNSUBSCRIBE at <a href="https://lists.osgeo.org/mailman/listinfo/africa" target="_blank">
https://lists.osgeo.org/mailman/listinfo/africa</a><o:p></o:p></p>
</blockquote>
</div>
<p class="MsoNormal"><br>
<br>
<o:p></o:p></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>Africa mailing list<o:p></o:p></pre>
<pre><a href="mailto:Africa@lists.osgeo.org">Africa@lists.osgeo.org</a><o:p></o:p></pre>
<pre>You can UNSUBSCRIBE at <a href="https://lists.osgeo.org/mailman/listinfo/africa">https://lists.osgeo.org/mailman/listinfo/africa</a><o:p></o:p></pre>
</blockquote>
<pre>-- <o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>=============================================<o:p></o:p></pre>
<pre>Zoltan Szecsei GPrGISc 0031<o:p></o:p></pre>
<pre>Geograph (Pty) Ltd.<o:p></o:p></pre>
<pre>GIS and Photogrammetric Services<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>P.O. Box 7, Muizenberg 7950, South Africa.<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Mobile: +27-83-6004028<o:p></o:p></pre>
<pre>Qatar: +974 5083 2722 <a href="http://www.geograph.co.za">www.geograph.co.za</a><o:p></o:p></pre>
<pre>=============================================<o:p></o:p></pre>
</div>
<br>
<br>
<font color="#ffffff" size="1">Signature Version dd/mm/yyyy hh:mm</font> <br>
NB: This Email and its contents are subject to the Eskom Holdings SOC Ltd EMAIL LEGAL NOTICE which can be viewed at http://www.eskom.co.za/Pages/Email_Legal_Spam_Disclaimer.aspx
</body>
</html>