<div dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif"><span style="font-family:Arial,Helvetica,sans-serif">> BTW, I do not know that do you mean with epsg:27000 (there is no such a crs).</span><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif"><span style="font-family:Arial,Helvetica,sans-serif">sorry; iam working in the UK atm so got a bit confused. Meant to say <b>epsg:2100</b> (</span><span style="font-family:Arial,Helvetica,sans-serif"><a href="https://epsg.io/2100">https://epsg.io/2100</a>)</span></div><div class="gmail_default" style="font-family:tahoma,sans-serif"><span style="font-family:Arial,Helvetica,sans-serif"><br></span></div><div class="gmail_default" style="">Have not been involved in 3D measurements for a very long time so my vertical knowledge is a bit rusty, but the name rings some bells.</div><div class="gmail_default" style=""><br></div><div class="gmail_default" style="">I'll try to ask around, but my feeling is as above: they are trying to keep it dynamic, and for each big project they declare technical specifications according to their needs but the final deliverables should always be transformed epsg/2100 (EGSA'87 or GGRS87 or Greek Grid); which we can say currently and for the foreseeable future is the de facto coordinate system of greece.</div><div class="gmail_default" style=""><br></div><div class="gmail_default" style="">n</div><div class="gmail_default" style=""><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 9, 2024 at 10:46 AM Javier Jimenez Shaw <<a href="mailto:j1@jimenezshaw.com">j1@jimenezshaw.com</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 dir="ltr"><div dir="auto"><div>Hi Nikos</div><div dir="auto"><br></div><div dir="auto">Thanks for your answer. </div><div dir="auto">Yes, more digging would be really appreciated. Every country and agency works different... and also they change along time.</div><div><br></div><div>In Greece there is a vertical CRS in EPSG, "Piraeus-heigh" <a href="https://epsg.org/crs_5716/Piraeus-height.html" target="_blank">https://epsg.org/crs_5716/Piraeus-height.html</a><br></div><div><br></div><div>BTW, I do not know that do you mean with epsg:27000 (there is no such a crs).</div><div><br></div><div>Cheers</div><div>Javier.</div><div><br></div><div dir="auto"><div class="gmail_quote" dir="auto"><div dir="ltr" class="gmail_attr">On Mon, 8 Apr 2024, 17:54 Nikolaos Ves, <<a href="mailto:vesnikos@gmail.com" target="_blank">vesnikos@gmail.com</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 dir="ltr"><div class="gmail_default" style="font-family:tahoma,sans-serif">Hi Javier,</div><div class="gmail_default" style="font-family:tahoma,sans-serif"><br></div><div class="gmail_default" style="font-family:tahoma,sans-serif">This is an interesting one; I have not found a law that declares the official Greek coordinate system as the one described at epsg:27000. </div><div class="gmail_default"><font face="tahoma, sans-serif">Interestingly enough at this moment, </font>greece<font face="tahoma, sans-serif"> is trying to complete </font>it's<font face="tahoma, sans-serif"> cadastre, and as a basis to it, everything is using the </font>GRS80 ellipsoid as well.</div><div class="gmail_default"><font face="tahoma, sans-serif">My take is that if this one was developed by the </font>Hellenic Military Geographical Service, we could very well start seeing it being used for applications in the mid/far future, but for now it's not used in any official civil projects that I am aware of.</div><div class="gmail_default"><br></div><div class="gmail_default">Happy to dig a bit more to find a more authoritative answer somewhere if that is not sufficient,</div><div class="gmail_default">Let me know,</div><div class="gmail_default">Nikos </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Apr 8, 2024 at 4:14 PM Javier Jimenez Shaw via PROJ <<a href="mailto:proj@lists.osgeo.org" rel="noreferrer" target="_blank">proj@lists.osgeo.org</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 dir="ltr"><div>Hi</div><div><br></div><div>I found recently that there is a new geoid model in Greece "HELLAS GEOID 2023" (HG2023) </div><div><a href="https://www.researchgate.net/publication/372604538_Geoid_model_determination_for_the_Hellenic_area_Hellas_Geoid_2023" rel="noreferrer" target="_blank">https://www.researchgate.net/publication/372604538_Geoid_model_determination_for_the_Hellenic_area_Hellas_Geoid_2023</a> <br></div><div><br></div><div>In case it is the official one in Greece, it would be nice to include it in PROJ (and EPSG).</div><div>Has anybody here contacts in Greece? I already wrote a couple of emails to the authors, but probably I ended up in the spam folder. No useful info in the webpage (or I couldn't find it).</div><div><br></div><div>Thank you.</div><div><br></div><div>Regards,</div><div>Javier.<br></div><div><div><div dir="ltr" class="gmail_signature"><div dir="ltr"><div>.___ ._ ..._ .. . ._. .___ .. __ . _. . __.. ... .... ._ .__</div></div></div></div></div></div>
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