On 14 December 2020 20:03:00 GMT, Martin Budaj <m.bu...@gmail.com> wrote: >On Mon, Dec 14, 2020 at 8:51 PM Andrew > > >Check https://www.gnu.org/software/gama/ > >BTW, how did you get the azimuth (compass column in the data you sent) >from >the theodolite data? > We set up a leg some distance outside the cave using gps. Then every time the target is swapped with the main unit, you have to align it with the back leg. It is a tedious process, but lets splays be recorded easily. The paid surveyors tried triangulation down the tunnel, but there is not really enough room, further round the loop it gets to one person wide with metal everywhere.
In places where we haven't been able to get GPS we have used a distox to set up the leg Andrew -- _______________________________________________ Therion mailing list Therion@speleo.sk https://mailman.speleo.sk/listinfo/therion
