[Therion] Depth seems to be including surface legs

[Stacho Mudrak]

Hmm, but it looks to me, that scale is only up to altitude 481m​, which is
altitude of entrance. No surface centerline taken into account.

S.

On 23 March 2017 at 16:17, Duncan via Therion <therion at speleo.sk> wrote:

> Yes the entrance is marked.
> I've attached the Aven view with entrances highlighted (Therion generated
> 3D file).
> Note that the surface legs have been excluded from the Aven presentation.
>
> Entrance was declared as follows:
>     cs OSGB:XX
>     fix 21 XXXXX XXXXX 480   # Tweaked to match Google Earth
>     station 21 "Old Mine" entrance
> Coordinates blanked out at this time.
>
> Duncan
>
> On 23/03/2017 13:36, Martin Sluka via Therion wrote:
>
> Is there entrance marked?
>
> m.s.
>
> On Mar 23, 2017, at 02:04 PM, Duncan via Therion <therion at speleo.sk>
> <therion at speleo.sk> wrote:
>
> We surveyed the surface above an old mine to get a feel for how thin the
> roof is.
> See attached Loch screenshot.
>
> Unfortunately, the surface legs are being included in the Depth value
> displayed on the Plan PDF (see attached).
> Displayed value is 13m, it should be about 8m. 13m is the maximum
> vertical extent of all our survey legs.
>
> The centerline data for the surface legs has been flagged as "flags
> surface".
> These have been correctly omitted from the cave length, and cave length
> is updated when the surface flag is commented out. However, the vertical
> range does not alter when the surface flag is toggled.
>
> I expected cave depth to be the maximum vertical range of the
> underground data.
> Hope someone can set me straight :)
> Duncan
>
> <OldMineLoch.JPG>
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