It is another "entrance" "station 0 entrance" means, that this station is reference point from which is altitude calculated and centerline flipped for extended elevation. For list of caves it is "entrance 0" in survey section. Or should be. m. On Jan 09, 2017, at 04:03 PM, Pavel Herich via Therion <therion@speleo.sk> wrote: "not enough data readings" - because it´s written under command data normal from to ... Proper way to use it is following: survey -title "Cave name" ... centerline station 0 "Cave name" entrance ... data normal from to compass clino ... ... endcenterline ensurvey Then things works well. Pavel Dňa 2017-01-09 15:52 Andrew Atkinson via Therion napísal(a): The Therion book states it has to be in survey, I tried entrance 0 in centreline, then you get an error, not enough data readings. Yes I know what it is meant to do, but it is not working, I will post examples when I am back in the UK, not easily done from rural Myanmar.... Andrew On 9 Jan 2017 20:57, "Pavel Herich via Therion" <therion@speleo.sk> wrote: Definition of entrance has to be inside centerline. Then "export cave-list -location on -o cave.html" gives you coordinates and lenght and depth of your surveys compiled, conected with defined entrances. If you have a index.th [1], which connects all your caves (every cave has to be at least in one or more surveys; and more surveys connected under one general cave survey), then you have list of all caves with one or more defined entrances. Pavel Dňa 2017-01-09 15:14 Andrew Atkinson via Therion napísal(a): Yes, that is what I said, and it gives an error Andrew On 9 Jan 2017 19:04, "Martin Sluka via Therion" <therion@speleo.sk> wrote: Definition of entrance is part of survey-endsurvey m.s. On Jan 09, 2017, at 12:55 PM, Andrew Atkinson via Therion <therion@speleo.sk> wrote: Page 17 of the Therion hook states that station <station name> Under the context survey should be used as the entrance identifier for a cave to be used in cave-list export. However, this gives an error unknown command -- entrance Now I can sort of get round it using Station 0 "" entrance in the centerline, but this does not define a cave so the list is a bit weird. Am I missing something? V 5.3.16 on windows 10 Andrew _______________________________________________ Therion mailing list Therion@speleo.sk https://mailman.speleo.sk/listinfo/therion [2] [1] _______________________________________________ Therion mailing list Therion@speleo.sk https://mailman.speleo.sk/listinfo/therion [2] [1] Links: ------ [1] https://mailman.speleo.sk/listinfo/therion [2] _______________________________________________ Therion mailing list Therion@speleo.sk https://mailman.speleo.sk/listinfo/therion [2] _______________________________________________ Therion mailing list Therion@speleo.sk https://mailman.speleo.sk/listinfo/therion [2] Links: ------ [1] http://index.th [2] https://mailman.speleo.sk/listinfo/therion _______________________________________________ Therion mailing list Therion@speleo.sk https://mailman.speleo.sk/listinfo/therion _______________________________________________ Therion mailing list Therion@speleo.sk https://mailman.speleo.sk/listinfo/therion