Differentiating splay measures in Aven

[Luc Le Blanc]

Le ven. 7 févr. 2020 à 18:50, Olly Betts <olly at survex.com> a écrit :
>
> On Fri, Feb 07, 2020 at 05:20:54PM -0500, Luc Le Blanc wrote:
> > I export splay measures creating anonymous stations by suffixing the
> > original station name. Here's an excerpt of survey shot BA.0-BA.1, its
> > LRUDs and then its splay measures:
> >
> > *data normal from to length compass  clino
> >          BA.0          BA.1     18.79    60.9      -2.1
> > *data passage station left right up down
> >          BA.1    3.55    3.21    2.14    0.10
> > *flags splay
> > *data normal from to length compass clino
> >          BA.0          BA.0.1    8.42   57.10   -0.90
> >          BA.1          BA.1-2    6.37   41.70    1.10
> >          BA.1          BA.1-3    4.02   97.90    1.50
> >          BA.1          BA.1-4   10.20   73.40    2.10
> >          BA.1          BA.1.5    5.15  254.00    4.10
> > *flags not splay
>
> (Aside: I notice splays get 2 decimal places on the compass and clino
> but normal legs only get 1 decimal place - presumably that's not
> intentional?)

No. I'll fix it :)

> With the above "*alias station - .." isn't relevant as these aren't
> really anonymous stations.  "BA.1-2" is just a normal station called
> "1-2" in survey "BA" and "BA.0.1" is a station called "1" in subsurvey
> "0" in survey "BA".

Correct. When I coded this export, I guess every shot needed a "to"
station, even splay shots.

> But I'd suggest making use of the anonymous station feature Wookey
> described, and then the above would be:
>
> *data normal from to length compass  clino
> *alias - ..
>          BA.0          BA.1     18.79   60.9    -2.1
>          BA.0          .         8.42   57.10   -0.90
>          BA.1          -         6.37   41.70    1.10
>          BA.1          -         4.02   97.90    1.50
>          BA.1          -        10.20   73.40    2.10
>          BA.1          .         5.15  254.00    4.10
> *data passage station left right up down
>          BA.1    3.55    3.21    2.14    0.10

I hadn't realized he meant putting a mere - or ., not just using it as
a suffix separator. To me, these stations were anonymous in that their
name was purely synthetic and produced by appending an order number to
the station name from which the splay shot was taken.

> That gets rid of all the invented station names, and the weirdness
> that BA.0 and BA.1 are each both a station and survey (which Survex
> doesn't actually support but it seems the check to catch it doesn't
> trigger in this case for some reason).

Actually, the whole station name is BA.0; in Auriga, surveys (or
"sessions" as they're called) do not make any assumption about the
station names. So you can survey various passages, naming them as you
wish, during a single survey session. I made this input tool very
generic to accommodate everyone's tastes and every target software's
requirements. In this case, my user is targeting Visual Topo, but I
understand he also uses Aven for its 3D rendering.

> Those legs would then be automatically flagged as splays (so no need to
> toggle the "splay" flag) and the "-" end points marked as being a wall
> (in your current version nothing gets marked as a wall).

I like this simplification.

Thanks for taking the time to clarify.


-- 
Luc Le Blanc
http://www.speleo.qc.ca/Auriga