[Therion] Fix station point using only 2D

[markus.boldt at gmx.net]

Hi Adam, "normally" you have coordinates of your radio location point at the surface from GPS. You know, I do so. What a kind of coordinates you have? Give them simply a thought depth for example.
Best regards to Poland and greetings to Agnieska :-).
Markus 

-----Ursprüngliche Nachricht-----
Von: "Adam Pyka via Therion" <therion at speleo.sk>
Gesendet: Dienstag, 21. August 2018 11:41
An: therion at speleo.sk
Cc: adampyka at gmail.com
Betreff: [Therion] Fix station point using only 2D

Hi all,

How to 'fix' the survey station point (to morph the cave plan) having
only 2D coordinates?

Using the radiolocation we get (with quite good accuracy) the station
point position which is about 150m beyond the estimated location we
get from surveying. So now I wanted to use this position to make a
correction to the main polygon. But the 'fix' command need a 3D coords
so how should I do that (no, there is no point to measure the depth by
radiolocation by some reasons).

Thanks in an advice,
Adam
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