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<font face="Arial">Hmmm....Ja.</font><br>
<font face="Arial">But querying the source of the data might save
all of us from getting a hard-earned 'Sherlock Holmes' badge :-)</font><br>
<br>
<div class="moz-cite-prefix">On 2019/07/12 10:02, Hermanus Brynard
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAPNO_6QQmP4h4rgAYdYnA6XckPU8a_q131e+NziKPyigs5SWxg@mail.gmail.com">
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<div class="gmail_default" style="font-size:small">Zoltan</div>
<div class="gmail_default" style="font-size:small">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.</div>
<div class="gmail_default" style="font-size:small"><br>
</div>
<div class="gmail_default" style="font-size:small">Can you send
me the shapefile.</div>
<div class="gmail_default" style="font-size:small">Manie</div>
<div class="gmail_default" style="font-size:small"><br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Fri, Jul 12, 2019 at 8:57
AM Zoltan Szecsei <<a href="mailto:zoltans@geograph.co.za"
moz-do-not-send="true">zoltans@geograph.co.za</a>> wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF"> <font face="Arial">Hi Manie,</font><br>
<font face="Arial">Thanks for the idea.<br>
</font><br>
<font face="Arial">The current system in use is QND95 - the
one you are suggesting (I see) is from 1976, and its
origin is "too close".</font><br>
<font face="Arial">(Yes, I still tried it)<br>
</font><br>
<font face="Arial">Looking at the numeric values of the
coords, I am expecting something with an origin some 500Km
West of Doha, and on the Equator.</font><font face="Arial"><br>
</font><br>
<font face="Arial">And then of course I also need to
consider the possibility that the coords in the shapefile
are non-sensical, so </font><font face="Arial">I'm trying
to find out its source....</font><br>
<font face="Arial"><br>
</font><br>
<font face="Arial">Thanks and keep well,</font><br>
<font face="Arial">Zoltan</font><br>
<br>
<div class="gmail-m_-1508674156475193765moz-cite-prefix">On
2019/07/12 09:23, Hermanus Brynard wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div class="gmail_default" style="font-size:small">Zoltan</div>
<div class="gmail_default" style="font-size:small">Have
you tired the </div>
<div class="gmail_default" style="font-size:small"><br>
</div>
<div class="gmail_default" style="font-size:small"><a
href="https://epsg.io/28600" title=""
target="_blank" moz-do-not-send="true"><span
class="gmail_default" style="font-size:small">Quatar
National Grid </span></a><br>
</div>
<h2 id="gmail-m_-1508674156475193765gmail-crs-title"><span
style="color:rgb(157,164,180)"><a
href="https://epsg.io/28600" title=""
target="_blank" moz-do-not-send="true">EPSG:28600</a><span
class="gmail_default" style="font-size:small"></span></span></h2>
<div><span><br>
</span></div>
<div><span><span class="gmail_default"
style="font-size:small"></span></span><span
class="gmail_default"></span><span>M</span><span
class="gmail_default">anie Brynard</span></div>
<div><span><span class="gmail_default"
style="font-size:small"></span></span></div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Thu, Jul 11, 2019
at 6:33 PM Zoltan Szecsei <<a
href="mailto:zoltans@geograph.co.za" target="_blank"
moz-do-not-send="true">zoltans@geograph.co.za</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px
0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div bgcolor="#FFFFFF"> <font face="Arial">Hi
Listers,</font><br>
<font face="Arial">I've been asked o help a
school-going daughter of a friend of mine in Doha
(yes, this is "AfricaList" :-/ )</font><br>
<font face="Arial">She has been given a shapefile
without a projection file. The area is Al Wakrah,
just South of Doha airport.<br>
</font><br>
<font face="Arial">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</font><br>
<font face="Arial">The scaling seems wrong, and it
does not align with the coastline (QND95)
shapefile I have.<br>
</font>(I also tried EPSG:27039)<br>
<font face="Arial"><br>
</font><br>
<font face="Arial">As you can see,
projection-sleuthing is not one of my strengths.</font><br>
<font face="Arial">Can anyone point me in a
direction to try and solve this?<br>
</font><br>
Thanks in advance.<br>
<br>
Kind regards,<br>
Zoltan
<p><br>
</p>
<pre class="gmail-m_-1508674156475193765gmail-m_1437261785791129865moz-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
Qatar: +974 5083 2722 <a class="gmail-m_-1508674156475193765gmail-m_1437261785791129865moz-txt-link-abbreviated" href="http://www.geograph.co.za" target="_blank" moz-do-not-send="true">www.geograph.co.za</a>
=============================================
</pre>
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<pre class="gmail-m_-1508674156475193765moz-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
Qatar: +974 5083 2722 <a class="gmail-m_-1508674156475193765moz-txt-link-abbreviated" href="http://www.geograph.co.za" target="_blank" moz-do-not-send="true">www.geograph.co.za</a>
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<pre class="moz-quote-pre" wrap="">_______________________________________________
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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
Qatar: +974 5083 2722 <a class="moz-txt-link-abbreviated" href="http://www.geograph.co.za">www.geograph.co.za</a>
=============================================
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