[Therion] Duplicates including adding splays?

[Bruce]

Hi Andrew
Yes, when splay shots to an unlabelled station such as '-' are included in a
dataset, such as when using a distoX or similar, the statistics do not make
that much sense to me. I think it still works the way you describe in 5.3.7.

To my way of thinking, splay shots are not part of the survey length (and
therefore should not be duplicate either), they are analogous to LRUD.  IF
they are to be reported, they should be separately reported as 'total splay
length' and 'number of splay stations' (could be further broken down into
'surface splays' and 'cave splays' if one was being picky).

If there were to be a compromise for the sake of simplicity I would prefer
that therion exclude splay information from all the reported statistics (as
it ignores LRUD, which are really just special splay shots), rather than the
apparently selective way the splay shots are currently included. 

Regards
Bruce

-----Original Message-----
From: therion-bounces at speleo.sk [mailto:therion-bounces at speleo.sk] On Behalf
Of Andrew Atkinson
Sent: Monday, 13 June 2011 6:10 a.m.
To: List for Therion users
Subject: [Therion] Duplicates including adding splays?

Hello

Therion 5.3.5 ubuntu 10.04

In the attached file the following information is given about the survey

title: RhinoPassage
length: 189.07m (surface 0.00m, duplicated 24.58m)
vertical range: 20.51m (from 1.27 at RhinoPassage at 20.38m to 
1.3 at RhinoPassage at -0.13m)
north-south range: 92.47m (from 1.27 at RhinoPassage at 33.43m to 
1.53 at RhinoPassage at -59.04m)
east-west range: 66.67m (from 1.53 at RhinoPassage at 66.67m to 
1.0 at RhinoPassage at 0.00m)
number of shots: 281
number of stations: 282

The duplicate figure got me wondering, it seems to be counting the 
splays but the length does not. As the duplicate none splays are only 
about 10m.
Maybe this is what is wanted, but I personally think that the duplicate 
value should be the amount taken off the length by the duplicate flag? 
Ie why is length treated differently to duplicate (something to do with 
the way survex treated splays and duplicate as different, I think that 
splays are not included in extend in survex)

Maybe 2 figures would be better, duplicate length and duplicate splays.

{probably best to ignore this next bit}
Oh this leads to all sorts of thinks that are really not important, like 
maybe giving the length of all the splays, and the number of stations, 
is it really 282 or really 54. All depends on your definition I guess

Andrew