[Therion] Therion 5.4.2. potential bug

[Michael]

Thank you, Martin, for the quick fix.
Is it also fixed in 
https://therion.speleo.sk/downloads/therion-setup-5.4.2.exe
?
Regards,
Michael.
 
Von: Therion <therion-bounces at speleo.sk> Im Auftrag von Martin Budaj via Therion
Gesendet: Donnerstag, 17. Januar 2019 19:26
An: List for Therion users <therion at speleo.sk>
Cc: Martin Budaj <m.budaj at 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 at gmail.com <mailto:m.budaj at gmail.com> > wrote:
On Sat, Jan 12, 2019 at 10:51 AM Michael <knollesimage at t-online.de <mailto:knollesimage at 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 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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