Hi Anton, Here is what I have for the event de la coudoulière : cs epsg:2154 #Lambert 93 fix E6 747080.000 6301550.000 194.000 10 10 10 if you convert it to with GDAL you should have : cs EPSG:4326 # code WGS84 fix E6 3.58505 43.81139 194 10 10 10 longitude should be first. Best, Phil
On 27 Jul 2019, at 22:37, Anton van Rosmalen <A.M.vanRosmalen@gmx.net> wrote:
List,
Continuing this thread because there is still a coordinate conversion bug in Therion 5.4.4 in coordinate conversion when exporting to KML
I have entered the coordinates in UTM based on a point both from an actual GPS and from Google Earth (they are the same) in cs epsg:2154 (Lambert 93) or epsg:32631 (WGS84 / UTM 31N)
When I look at the output in UTM again, the entrance has shifted directly south for 9 meters.
I'm assuming Therion changes the coordinate to something else (more assumptions... WGS84?) and then changes it back again to the desired output format. This conversion produces the wrong results I think.
As a workaround, maybe I could enter and export in WGS84 lat/long, however, when I enter
cs epsg:4326 # WGS84 fix E6 43.811399 3.585060 194 10 10 10
I get
"can't determine meridian convergence for lat-long systems"
I can't find the format required for WGS84 lat/long in the manual, can someone provide this?
Thanks,
Anton
can't determine meridian convergence for lat-long systems
Gesendet: Freitag, 18. Januar 2019 um 15:33 Uhr Von: "Martin Budaj via Therion" <therion@speleo.sk> An: "List for Therion users" <therion@speleo.sk> Cc: "Martin Budaj" <m.budaj@gmail.com> Betreff: Re: [Therion] Therion 5.4.2. potential bug 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 (https://therion.speleo.sk/downloads/therion-setup-dev.exe <https://therion.speleo.sk/downloads/therion-setup-dev.exe>).
Martin
On Fri, Jan 18, 2019 at 9:32 AM Michael <knollesimage@t-online.de <mailto:knollesimage@t-online.de>> wrote: Thank you, Martin, for the quick fix.
Is it also fixed in
https://therion.speleo.sk/downloads/therion-setup-5.4.2.exe <https://therion.speleo.sk/downloads/therion-setup-5.4.2.exe> ?
Regards,
Michael.
Von: Therion <therion-bounces@speleo.sk <mailto:therion-bounces@speleo.sk>> Im Auftrag von Martin Budaj via Therion Gesendet: Donnerstag, 17. Januar 2019 19:26 An: List for Therion users <therion@speleo.sk <mailto:therion@speleo.sk>> Cc: Martin Budaj <m.budaj@gmail.com <mailto:m.budaj@gmail.com>> Betreff: Re: [Therion] Therion 5.4.2. potential bug
Hi, it's fixed in d98a0a6.
Martin
On Tue, Jan 15, 2019 at 7:28 PM Martin Budaj <m.budaj@gmail.com <mailto:m.budaj@gmail.com>> wrote:
On Sat, Jan 12, 2019 at 10:51 AM Michael <knollesimage@t-online.de <mailto:knollesimage@t-online.de>> wrote:
I have now attached a minimal cave sample produced with 5.4.1. and one produced with 5.4.2. to demonstrate the displacement.
Hi,
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 https://proj4.org/resource_files.html#transformation-grids <https://proj4.org/resource_files.html#transformation-grids> for examples).
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.
Best regards
Martin
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