[Therion] Therion/Survex <=> COMPASS conversion

Evaristo Quiroga eqr at ecgracia.com
Mon Nov 2 18:37:31 CET 2020


Hi,

I have been a COMPASS user the last two decades. Four years ago I have 
switched to Therion for the mainly tasks, but I need also powerful 
COMPASS  tools like:

  * Blunder and gross errors detection:
    https://www.fountainware.com/compass/HTML_Help/Project_Manager/findblunders.htm
  * Complex Plotting:
    https://www.fountainware.com/compass/HTML_Help/Compass_Viewer/complexplot.htm
  * Graph Tools:
    https://www.fountainware.com/compass/HTML_Help/Compass_Viewer/graphtools.htm

To can use this tools and need to convert files: " .th" --> " .dat"  and 
Export from Therion to ".plt"

To use  "COMPASS Viewer", where are the graph and complex plotting 
tools,  I need ".plt" files.

Therion export directly to ".plt" but don't use Compass surveys and 
sections.  A  Therion survey is equivalent to Compass section. And 
Therion centerline is equivalent to Compass survey. All the data  
exported from Therion to .plt are in only one Compass Section/survey.

And the export option  "-disable splay-shots" do anything, the ".plt" 
have  always the splay shots.

An other approach is to export to ".3d". From AVEN I can disable the 
splays an export to ".plt". The files have the same problem, don't 
export the data by surveys.

Actually I am exporting to ".3d". In AVEN  I disable splay shoots, and 
select one survey and export. I repeat for all surveys. After I 
copy&paste all the data to one only file, and do two tweaks to have a 
good ".plt" to work with "Compass Viewer tools".

It would be much more efficient to be able to export Therion models 
directly to .plt files, with Compass section and survey.
I really only need to export in one of the concepts (section or survey) 
the Therion surveys to be able to use the tools.

To import Compass ".dat" files to Therion ".th" I use Auriga or 
Topodroid. It's fine.

Searching in the mail Archive I have found Torsten have made a excel 
macro tool too.

https://www.mail-archive.com/therion@speleo.sk/msg07339.html

The inverse conversion is more problematic. Topodroid do a similar 
Therion/Survey approach, and put all the data in only one survey. Here 
is very important to have all the data in surveys (centerline) and 
sections (survey), with its survey date  and fix station or declination. 
To be able to use the Blunder detection tool I will have to reconstruct 
by hand all the header information of the survey (date and fix station 
or declination).

I'm doing tests with Auriga, but for now I don't have good results either.

Regards,

Evaristo.

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