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<div>List,<br/>
<br/>
Continuing this thread because there is still a coordinate conversion bug in Therion 5.4.4<br/>
in coordinate conversion when exporting to KML<br/>
<br/>
I have entered the coordinates in UTM based on a point both from an<br/>
actual GPS and from Google Earth (they are the same) in cs epsg:2154<br/>
(Lambert 93) or epsg:32631 (WGS84 / UTM 31N)<br/>
<br/>
When I look at the output in UTM again, the entrance has shifted<br/>
directly south for 9 meters.<br/>
<br/>
I'm assuming Therion changes the coordinate to something else (more<br/>
assumptions... WGS84?) and then changes it back again to the desired<br/>
output format. This conversion produces the wrong results I think.<br/>
<br/>
As a workaround, maybe I could enter and export in WGS84 lat/long,<br/>
however, when I enter </div>
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<div> cs epsg:4326 # WGS84<br/>
fix E6 43.811399 3.585060 194 10 10 10</div>
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<div>I get</div>
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<div>"can't determine meridian convergence for lat-long systems"</div>
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<div>I can't find the format required for WGS84 lat/long in the manual, can someone<br/>
provide this?<br/>
<br/>
Thanks,<br/>
<br/>
Anton</div>
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<div>can't determine meridian convergence for lat-long systems</div>
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<div style="margin:0 0 10px 0;"><b>Gesendet:</b> Freitag, 18. Januar 2019 um 15:33 Uhr<br/>
<b>Von:</b> "Martin Budaj via Therion" <therion@speleo.sk><br/>
<b>An:</b> "List for Therion users" <therion@speleo.sk><br/>
<b>Cc:</b> "Martin Budaj" <m.budaj@gmail.com><br/>
<b>Betreff:</b> Re: [Therion] Therion 5.4.2. potential bug</div>
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<div>No, we don't modify existing releases. The fix will be included in 5.4.3 eventually, but until then you can use the latest snapshot (<a href="https://therion.speleo.sk/downloads/therion-setup-dev.exe" target="_blank">https://therion.speleo.sk/downloads/therion-setup-dev.exe</a>). </div>
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<div>Martin</div>
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<div class="gmail_attr">On Fri, Jan 18, 2019 at 9:32 AM Michael <<a href="mailto:knollesimage@t-online.de" onclick="parent.window.location.href='mailto:knollesimage@t-online.de'; return false;" target="_blank">knollesimage@t-online.de</a>> wrote:</div>
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<p class="MsoNormal"><font color="#1f497d" face="Calibri" size="2"><span style="font-size: 11.0pt;font-family: Calibri , sans-serif;color: rgb(31,73,125);">Thank you, Martin, for the quick fix.</span></font></p>
<p class="MsoNormal"><font color="#1f497d" face="Calibri" size="2"><span style="font-size: 11.0pt;font-family: Calibri , sans-serif;color: rgb(31,73,125);">Is it also fixed <span class="gmail-m_3315062911662293142GramE">in</span> </span></font></p>
<p class="MsoNormal"><font color="#1f497d" face="Calibri" size="2"><span style="font-size: 11.0pt;font-family: Calibri , sans-serif;color: rgb(31,73,125);"><a href="https://therion.speleo.sk/downloads/therion-setup-5.4.2.exe" target="_blank">https://therion.speleo.sk/downloads/therion-setup-5.4.2.exe</a></span></font></p>
<p class="MsoNormal"><font color="#1f497d" face="Calibri" size="2"><span style="font-size: 11.0pt;font-family: Calibri , sans-serif;color: rgb(31,73,125);">?</span></font></p>
<p class="MsoNormal"><font color="#1f497d" face="Calibri" size="2"><span style="font-size: 11.0pt;font-family: Calibri , sans-serif;color: rgb(31,73,125);">Regards,</span></font></p>
<p class="MsoNormal"><font color="#1f497d" face="Calibri" size="2"><span style="font-size: 11.0pt;font-family: Calibri , sans-serif;color: rgb(31,73,125);">Michael.</span></font></p>
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<p class="MsoNormal"><b><font face="Calibri" size="2"><span style="font-size: 11.0pt;font-family: Calibri , sans-serif;font-weight: bold;">Von:</span></font></b><font face="Calibri" size="2"><span style="font-size: 11.0pt;font-family: Calibri , sans-serif;"> Therion <<a href="mailto:therion-bounces@speleo.sk" onclick="parent.window.location.href='mailto:therion-bounces@speleo.sk'; return false;" target="_blank">therion-bounces@speleo.sk</a>> <b><span style="font-weight: bold;">Im Auftrag von </span></b>Martin Budaj via Therion<br/>
<b><span style="font-weight: bold;">Gesendet:</span></b> Donnerstag, 17. Januar 2019 19:26<br/>
<b><span style="font-weight: bold;">An:</span></b> List for Therion users <<a href="mailto:therion@speleo.sk" onclick="parent.window.location.href='mailto:therion@speleo.sk'; return false;" target="_blank">therion@speleo.sk</a>><br/>
<b><span style="font-weight: bold;">Cc:</span></b> Martin Budaj <<a href="mailto:m.budaj@gmail.com" onclick="parent.window.location.href='mailto:m.budaj@gmail.com'; return false;" target="_blank">m.budaj@gmail.com</a>><br/>
<b><span style="font-weight: bold;">Betreff:</span></b> Re: [Therion] Therion 5.4.2. potential bug</span></font></p>
<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12.0pt;"> </span></font></p>
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<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12.0pt;">Hi, it's fixed in d98a0a6.</span></font></p>
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<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12.0pt;">Martin</span></font></p>
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<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12.0pt;"> </span></font></p>
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<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12.0pt;">On Tue, Jan 15, 2019 at 7:28 PM Martin Budaj <<a href="mailto:m.budaj@gmail.com" onclick="parent.window.location.href='mailto:m.budaj@gmail.com'; return false;" target="_blank">m.budaj@gmail.com</a>> wrote:</span></font></p>
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<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12.0pt;">On Sat, Jan 12, 2019 at 10:51 AM Michael <<a href="mailto:knollesimage@t-online.de" onclick="parent.window.location.href='mailto:knollesimage@t-online.de'; return false;" target="_blank">knollesimage@t-online.de</a>> wrote:</span></font></p>
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<p class="MsoNormal"><font color="#1f497d" face="Calibri" size="2"><span style="font-size: 11.0pt;font-family: Calibri , sans-serif;color: rgb(31,73,125);">I have now attached a minimal cave sample <span class="gmail-m_3315062911662293142gmail-m-1089282816476888490gmail-m3661294253689636535grame">produced with</span> 5.4.1. <span class="gmail-m_3315062911662293142gmail-m-1089282816476888490gmail-m3661294253689636535grame">and</span> one produced with 5.4.2. <span class="gmail-m_3315062911662293142gmail-m-1089282816476888490gmail-m3661294253689636535grame">to</span> demonstrate the displacement.</span></font></p>
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<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12.0pt;">Hi,</span></font></p>
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<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12.0pt;">the problem is that EPSG:31467 projection uses the "potsdam" datum and the PROJ library used by Therion changed the way how to transform potsdam datum to the standard WGS84 datum – it switched from a simple string parameter (towgs84) to using external grid file (see <a href="https://proj4.org/resource_files.html#transformation-grids" target="_blank">https://proj4.org/resource_files.html#transformation-grids</a> for examples). </span></font></p>
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<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12.0pt;"> </span></font></p>
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<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12.0pt;">No grid files are currently included in the windows Therion distribution, so the transformation is not correct in 5.4.2. Therion needs to be modified to include and use those files – hopefully soon.</span></font></p>
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<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12.0pt;"> </span></font></p>
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<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12.0pt;">Best regards</span></font></p>
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<p class="MsoNormal"><font face="Times New Roman" size="3"><span style="font-size: 12.0pt;">Martin</span></font></p>
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