[Therion] Therion] Get shortest route

[Benedikt Hallinger]

I think, when we would have some option to compile the shortest path 
between two statoins, this could easily leveraged to the multi-station 
approach (I would even do that manually if its not easily to be 
automated).

Further wishes could be to be able to specify constraints as options, so 
for example to assign more path-cost to steep inclinations (shafts/pits) 
or sumps.

The big question is, how this needs to be coded up, and more important, 
who can code it?


Am 2021-11-29 9:21, schrieb Bruce Mutton:
> This was discussed in 2008 in Therion circles.
> https://www.mail-archive.com/therion@speleo.sk/msg02037.html
> To be really useful, the user should be able to specify multiple 
> stations,
> with the algorithm finding the shortest centreline distance along the
> centreline network that passes through all of the specified points.
> 
> Outputs to list as noted by Benedikt below, pdf and aven/Loch models.
> 
> Bruce
> 
> -----Original Message-----
> From: Therion <therion-bounces at speleo.sk> On Behalf Of Olly Betts
> Sent: Sunday, 28 November 2021 07:57
> To: Benedikt Hallinger <beni at hallinger.org>
> Cc: therion at speleo.sk
> Subject: Re: [Therion] Get shortest route
> 
> On Fri, Nov 26, 2021 at 05:10:18PM +0100, Benedikt Hallinger wrote:
>> i would want to get some advanced statistics regarding lengths in a 
>> very
> big cave (130km/Hirlatz).
>> 
>> Basicly i want to supply two stations and get the following data for 
>> the
> shortest path:
>> - length of shots
>> - cumulated height for shots going upwards
>> - cumulative depth for shots going downwards
>> - optionally it would be cool to be able to somehow visualize the
>> route in aven/loch, or in a therion map output
>> 
>> Is this possible already?
> 
> I don't think so.
> 
> Someone was working on it, but I guess it didn't come to anything as 
> that
> was 2016:
> 
> https://lists.survex.com/pipermail/survex/2016-October/002082.html
> 
> Cheers,
>     Olly
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