Recent content by andrew

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    Paper survey to digital tool

    Not sure if this was meant for me or the OP. I don't believe the CSG has the skill set needed to deliver GIS at the moment. The field meet at the end of the month is likely to spend time on it, however most of us are still at the learning stage of having cave data displayed in GIS. Personally...
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    Paper survey to digital tool

    That would be really excellent. I did try, nine years ago, it turns out, and was thinking technology had moved on and would be worth another go. However someone else doing it would be even better. What I learnt, in the hope it will give you a start. The tracing was not good enough by any...
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    Entrance has moved on survey

    I still think that you should be able to use the node editor (I don't really use compass) to fix the station again. It appears from The web site https://fountainware.com/compass/ that compass has gone to a more text based .dat file than it use to type it in again. Or maybe you are stay you now...
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    Entrance has moved on survey

    I'm confused, isn't it just data? Which can be edited. If we could look at the files it's likely that it can be fixed. Most survey data is editable, although compass I've found one of the hardest. What do you mean by redo the whole survey? To me that would involve going underground. This is a...
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    Cave Surveying Group meeting at the Wessex, weekend of November 30th/December 1st

    There will be Cave Surveying Group meeting at SWCC the weekend of November 30th/December 1st. We can do whatever people think is interesting, but suggestions so far have been: 1) a GIS session 2) An extended elevation session (therion) 3) Testing SAP6 and and any other devices people have 4)...
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    BCRA Cave Surveying Group and Annual Review

    The Cave Surveying Group is alive and well, although more people welcome. The report I sent in said that the CSG continues to run the Cave Registry Data Archive which has continued to expand. The Cave Survey Salon was run at HE, however I did not have details as I had COVID. The person who...
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    Therion - Calculating altitude for labels from a previous station

    It has to be said for many year I and most other people didn't. I suspect the zero error on fixed points by definition is a historic anomaly, leading to lots of data sets, mine included having many in them. For single entrance caves, with only one point fixed, it hardly matters As soon as there...
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    Therion - Calculating altitude for labels from a previous station

    The above fix assumes the information you give is perfect, (zero error) which is unlikely/impossible. It is far better to give the possible error on the readings. *fix <station> [reference] [ <x> <y> <z> [ <x std err> <y std err> <z std err> [ <cov(x,y)> <cov(y,z)> <cov(z,x)> ] ] ] You...
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    Therion - Calculating altitude for labels from a previous station

    Without seeing all the data, well at least the 3d, what I think is happening is that fix just puts the number, 288, in an altitude label, the 2 comes from the altitude of closest station in the dataset. Trying fixing the 288 in the data instead of the drawing. (I've not used fix in the drawing...
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    Therion - Calculating altitude for labels from a previous station

    Assuming you are using the altitude point? If not that is probably the answer, if not I'm a little stumped about what you are asking, please could you send and example. Therion takes the altitude from the closest survey station. For this reason I tent to put the altitude point on a survey...
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    TopoDroid / Dive mode

    There should be no need to calculate the inclination for input to Therion. There are various formats that Therion can accept one of them diving. It allows input of various depths. One main advantages of survex format (that Therion essentially uses) is that it can take data in exactly the same...
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    CSG website(?)

    Unfortunately it appears to have been hacked, well another site on the same service was used carelessly by someone and it has spread to the other sites. Wookey is aware and hopefully will clean it up soon Andrew CSG secretary
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    Any support for Therion beginners?

    Hello There is lots of support out there, I would suggest the mailing list, which most people using therion tend to use https://therion.speleo.sk/contact.php It is a very friendly group and covers all levels from beginner to really technical changes. You will need to give a bit more detail...
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    Reads cavern splash pot bolt

    Thanks for reporting this, someone is going to go and have a look at which point further discussion will take place and reported. For future reference the information that is needed to report anchors or request new ones is on this page https://cscc.org.uk/wiki/equipment/start CSCC is an...
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