Those fixed positions would need to be calculated, by something. Errors do occur which are better distributed about the loops. Most none surveying software doesn't really do this. There is a data type that is for theodolite, however it is for a data type where all distances are horizontal, which appears to be for really old theodolites. Theodolites are not really set up for doing traverses, for a loop of a few hundred metres we have an mis-closure of about 1m. I would be disappointed if I was using a disto X. It seems to be par for the course. The show cave owners paid for a traverse when they where tunnelling. They claimed millimetre accuracy however were metres out. Lead to a bit of an arguement between the caver surveyors and the paid surveyors about Which direction to dig the tunnel. It was resolved when the tunnel broke through. Luckily the tunnelers listen to the cavers. đ Andrew On 14 December 2020 18:47:11 GMT, Martin Sluka via Therion <therion@speleo.sk> wrote:
Nor Survex, nor Therion support theodolite, as I know. Isnât better to input such measurements as fix points?
Martin
OdeslĂĄno z iPhonu
14. 12. 2020 v 19:09, Stacho Mudrak <lists@group-s.sk>:
Hello,
could you please try the latest commit? I do not think that even a warning for 270 (=-90) to 360 (=level) degrees clino is necessary. An error can occur if you manually type a comma in the wrong place, but the same may happen with compass & tape and there is no warning.
S.
On Mon, 14 Dec 2020 at 09:43, Andrew Atkinson <andrew@wotcc.org.uk> wrote: We have now used 3 different 'Total stations' all by different manufacturers
All seem to give a choice between
270 as down 0 as level and 90 as up
or
0 as down 90 as level and 180 as up
None of them have given the choice for negative clino (all the machines we have use are old, but digital.
So it does seem normal for theodolites!
With hindsight I should have chosen the latter,then I could have just calibrated with a calibrate clino 90
But it was difficult to get your head round, plus I was using pockettopo (and sexytopo) to draw the survey in the cave, so it was easier to use the 270 as down version
It would be really useful to be able in a centreline-endcentreline nest to be able to suppress the out of range error and use the 270 to 360 readings, but still have the error/warning for the more normal surveys
thanks
Andrew
On 14/12/2020 08:24, Martin Sluka via Therion wrote:
Are you sure those data are ânormalâ?
Martin
OdeslĂĄno z iPhonu
14. 12. 2020 v 1:10, alastair gott <alastairgott@hotmail.com>:
Hi Andrew, if you can get deg,mins,secs to work in survex then you can use the .3d file with the surveys use command. (But I think from your careful wording, you already know this).
import use.3d -surveys use
Not ideal afaik for âmixing local and global coordinatesâ so tricky if your going for a kml output if you have to use with mixed .3d and normal .th files.
It would be good if you could select a lookup file for the Clino, then you could easily create a translation file in excel and save that as a .th for your total station .th file to lookup to. But no idea if this is feasible or even an idea at all.
Al.
Sent from my iPhone
On 13 Dec 2020, at 18:15, Andrew Atkinson <andrew@wotcc.org.uk> wrote:
Hello
I thought that there was a way I could stop the out of range error, but I cannot now find it. It would be an a useful command to have as instead of negative readings we got readings between 270 and 359, which although strange is valid. In survex readings over 90 are just a warning, which seems far more sensible, the problem is that I don't think that I can enter the data in survex either without conversion as I don't think that degrees minutes and seconds can be entered.
So I'm stuck with data that I have to convert, for different reasons depending on whether I use survex of therion.
Here is part of the file, I have quiet a few
survey
centreline data normal from to clino compass tape ignoreall 1 2 1:08:25 83:37:40 17.88 2 3 00:00:00 -:-:- 0.055 3 - 02:39:00 266:49:00 3.206 3 - 314:28:20 299:57:45 2.02 3 - 16:32:25 312:13:20 1.246 3 - 06:22:35 84:16:10 1.17 3 - 309:16:45 84:15:50 1.846 3 - 55:00:10 122:44:50 0.77 3 - 325:02:55 249:55:45 1.014 3 5 359:30:50 338:07:25 16.674 5 - 306:52:00 262:23:20 1.402 5 - 59:29:30 343:51:30 1.076 5 - 305:08:25 358:34:30 1.274 5 - 315:26:20 90:51:35 1.632 5 - 29:12:45 77:01:35 1.891 5 - 19:55:50 33:02:00 3.071 5 - 348:22:35 31:08:25 3.707 5 - 350:35:20 15:31:25 4.292 5 - 13:29:35 15:31:20 4.202 5 - 12:24:50 30:20:20 7.919 5 6 17:29:05 31:28:50 6.444 6 - 307:24:35 149:47:35 1.738 6 - 344:44:40 149:45:30 1.426 6 - 77:05:35 149:36:05 1.523 6 - 306:05:00 314:12:10 0.84 6 - 353:47:50 94:54:35 2.091 6 - 00:42:00 219:31:40 5.446 6 - 18:33:50 230:03:05 4.468 6 7 12:26:05 241:13:00 4.272
.....etc
Anyone got a solution that does not mean I have to convert in a spreadsheet?
thanks
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