Salut, I think you can use the "flag" directive : (extract from the THBook) *flags ▷ set flags for following shots. The supported flags are: surface (for surface measurements), duplicate (for duplicated surveys), splay (for short side legs that are hidden in maps and models by default). These are excluded from length calculations. All shots having one of the stations named either ‘.’ or ‘-’ are splay shots by default (see also data command). If flag is set to approx[imate], it is included to total length calculations, but also displayed separately in survey statistics. It should be used for shots, that were not surveyed properly and need to be resurveyed. Also “not” is allowed before a flag.* Example : survey XXXX -title "Blablabla" centerline date 2017.10.01 team "zzz ZZZZ" notes team "tttt TTTTT" clino compass tape units length meters units compass clino degrees data normal from to length compass clino flags duplicate 0 - 1.39 30.0 -0.8 0 - 2.56 344.8 -3.6 0 - 3.46 313.9 -2.2 0 - 2.13 270.4 1.5 0 - 2.56 339.4 45.3 0 - 2.43 276.2 26.0 0 1 10.47 336.5 -46.1 # .... # all the shots you xwant to exclude from cave total length # .... flags not duplicate # ... # the normal shots # ... endcenterline endsurvey When you export a survey-list, you can see the total of each length type (surveyed, explored, duplicate, surface...). Bonnes explos ! Bertrand 2017-10-11 7:46 GMT+02:00 Matthieu Egels via Therion <therion@speleo.sk>:
I am currently work on a large topographic project of a hypogenic cave in the south of the france. Is it possible to define secondary stations or to define shoot which are not take ino account for the length of the cave. Thanks for your help. _______________________________________________ Therion mailing list Therion@speleo.sk https://mailman.speleo.sk/listinfo/therion