[Therion] Distance between two survey station

eric georges zar2 at wanadoo.fr
Sun Sep 7 16:50:08 CEST 2025


Hello,

Thank you for your replies.
I was familiar with the "Survex Aven" method, but it was "Distance along 
the survey legs between these points" that I was looking for.
The method proposed by Benedikt Hallinger (shortestPath.py) works very well.
I'm currently unable to compile "survex-dist" (I get an error), the 
method proposed by Alastair Gott.

Eric Georges

Le 05/09/2025 à 09:26, Benedikt Hallinger a écrit :
> Hi,
> I once found a GPL2 library called "survex.py" from Thomas Holder.
> Using that it is possible to find the shortest path (as you walk) 
> between two points.
> Survex itself just shows the shortest path as the crow flies.
>
> I made a convinience wrapper "shortestPath.py" for the task, call 
> example (linux):
> $ ./shortestPath.py Hirlatzhoehle.Zubringer.1.1.0 
> Hirlatzhoehle.Alter_Teil.2.1.55
> ('Shortest route length:', 2214.546790435116, 'm')
> ('Cumulated height going upwards:', 354, 'm')
> ('Cumulated depth going downwards:', -196, 'm')
>
> I hope its useful,
> greetings, Beni
>
>
> Am 2025-09-04 22:28, schrieb eric georges via Therion:
>> Hello,
>>
>> I'd like to know if there's a method for calculating the distance
>> between two survey station, and also for identifying the shortest
>> path, or even for determining all possible paths.
>> I think this should be possible using the .slq file.
>>
>> thanks
>>
>> Eric Georges
>> _______________________________________________
>> Therion mailing list
>> Therion at speleo.sk
>> https://mailman.speleo.sk/listinfo/therion



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