[Therion] Joining old and new surveys

Filippo Gregori fgregori at inventati.org
Tue Feb 17 08:13:32 CET 2015

Hi, I would think to create an auxiliary point and fictitious in the
plan and in elevation map, so would put the new section is from there.

On 17/02/2015 07:15, Steven Tucker wrote:
> Hi,
> I have an old survey from the 80s and I have new sections that I want to
> add with Therion. The old survey has no centerline data.
> I have redrawn the old survey in a th2 file and allocated 3 points which
> correspond to 3 different entrances. In the th file I have given
> coordinates to all 3 of those points. This works perfectly.
> I am struggling to connect the new section with this old section. The new
> section starts in a deep section of the cave and is far away from any of my
> currently defined points.
> What is the easiest way to connect the new and old sections?
> Thanks,
> Steven
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> Therion at speleo.sk
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