[Therion] Size of image files

Is there a limit on the size of image files that Therion will handle, or is it my computer? Importing a 20Mb png image into a Th2 file caused the program to crash on me, giving a little box labelled "Fatal Error in Wish" and saying "Fail to create pixmap with Tk_GetPixmap in ImgPhotoInstanceSet

[Therion] BAC calculator

This appears in the Therion help dropdown menu. What is it for? Graham

[Therion] displaying models in a browser

Someone on UKcaving asked about displaying 3d models on the web, as opposed to making them available as downloads. Andrew immediately suggested generating vrml files and I see that Therion "appears" to be able to generate these. However, I cannot find a Firefox plugin that will display these, o

[Therion] Diving data bug

We have some diving data which, unusually, will be part of a closed loop. I therefore wished to put some parameters in to define the accuracy of that data. I put in some lines using the sd command and it accepted the "compass" parameters OK, but refuse the "fromdepth" and "todepth" ones despite

[Therion] "Colour by date"

Colour by date can sometimes be a useful tool for viewing 3d files in Aven, especially when viewing to different datasets for the same passage in parallel. However, 3d files generated by Therion, as opposed to Survex, don't seem to support this feature. There does not seem to be a similar featu

[Therion] Degrees: minutes in centreline

Further to Andrew's query about this, I entered some data using degrees:minutes and it compiled perfectly well, except that I included a compass correction. The correction would only work in degrees.decimal degrees, not in degrees minutes. Graham -- graham.mullan at coly.org.uk 0117 9502556 or

[Therion] XYZ co-ordinates and other things.

Survex will generate a list of XYZ co-ordinates from a 3d file, so you "could" generate a 3d file from Therion and then run it back through Survex using the "convert for hand plotting option". For historical reasons, amongst others much of our data is in Survex format and is imported into Theri

[Therion] Multiple surfaces in loch

I agree with everybody else; that would be brilliant. Graham

[Therion] Multiple surfaces in Loch

Further to the discussion about this I have just tried, to see what would happen, generating a lox file using one set of DEM data but two separate map images that cover different parts of the area. Only the second one gets picked up in the generated lox file, not both. Oh well. Graham -- graha

[Therion] Therion Digest, Vol 59, Issue 17

Graham -- graham.mullan at coly.org.uk 0117 9502556 or 07887 637064 (or 0844 2327803) On 16/11/2010 11:00, therion-request at speleo.sk wrote: > Send Therion mailing list submissions to > therion at speleo.sk > > To subscribe or unsubscribe via the World Wide Web, visit > http://mai

[Therion] Magnetic deviation corrections

Therion appears to correct for mag deviation automatically, based on the date that a survey was carried out. is it possible to turn this feature off within specific surveys? I have much legacy data where either the relevant correction has already been applied or where they have recorded a "comp

[Therion] co-ordinate systems

I know that, at Andrew's request, you enabled OSGB to be recognised for the ST area. Is there any possibility of OSGB:SN being enabled as well, as I am about to start building a model of a cave in that part of South Wales. Graham --- graham.mullan at coly.org.uk 0117 9502556 or 07887 637064

[Therion] Co-ordinate systems

Thank you for the OSGB:SN Made life a lot easier. Initial result (needs more work) at http://www.ubss.org.uk/resources/surveys/survex/LNRC.lox Graham --- graham.mullan at coly.org.uk 0117 9502556 or 07887 637064 (or try 0844 2327803)

[Therion] Irish Grid coordinates

I am starting the tedious process of migrating a large dataset from Survex to Therion. Now would therefore seem the right time to start converting the co-ordinate system that is used. The data is for Co. Clare in Ireland and previously all entrances and fixed points were listed in Irish Grid. T

[Therion] viewing files on a mac

I have had two people complain to me recently that they cannot read lox files (or indeed survex 3d files) on their macs. I know that macs are poorly supported and, of course, all serious users should be on linux, or at worst Windows, but would it be possible to produce a browser plugin so that

[Therion] grid alignment rotation

Ben We've had similar problems, notably with some of Willie's data where he applied a correction that encompassed both compass error and declination. The result suggested was to insert a line declination 0 degree which zero's the declination correction. One can then add a line such as calibra

[Therion] incomplete data sets

I have begun the arduous task of converting a large data set (60 km+ of passage) from Survex to Therion in line with the rest of the data that we keep. Much of this is quite old, 1950s and 1960s. In many cases we do not have clino data and, in Survex, I have either ignored this fact or have man

[Therion] Bug in 5.3.7

I upgraded to 5.3.7 and hit a problem. A file that contains both therion inputs and a 3d file import from Survex failed to import the latter. Reverting to 5.3.5 has solved the problem. Graham -- graham.mullan at coly.org.uk 0117 9502556 or 07887 637064 (or 0844 2327803)

[Therion] Therion bug

Sorry, yes. Windows build The errors seem to be. writing Goughsth.3d ... done writing Goughs.lox .. C:\Program Files (x86)\Therion\therion.exe: warning -- BlackcatSPl3 at Blackcat.Goughs -- invalid scrap outline . C:\Program Files (x86)\Therion\therion.exe: warning -- FontsSPl4 at F

[Therion] Therion Digest, Vol 66, Issue 6

> From: Stacho Mudrak > > Well, this is not an error, it is just warning caused by new triangulation > algorithm for 3D model generation. > > Some of these warnings will be probably removed in the near future, when > this algorithm will be finished. > > If your 3D model looks OK, you can ignore th

[Therion] Bug in 5.3.7

As requested. I have tried the Windows build of Therion 5.3.8 and the problem that I had has vanished. the whole cave now compiles including the survex 3d file imported bit. Thanks Graham

[Therion] UTM 30 N

For Spain, try using EPSG 23030 for your cs see http://spatialreference.org/ref/epsg/23030/ Graham -- graham.mullan at coly.org.uk 0117 9502556 or 07887 637064 (or 0844 2327803) On 26/03/2011 11:00, therion-request at speleo.sk wrote: > Send Therion mailing list submissions to > therion a

[Therion] Compatibility with Survex

I made a comment recently about compatibility with the most recent version of Survex, so that I didn't need to change between versions of the latter when viewing 3d files generated with either Survex or Therion. This was to be takien on board with the next development snapshot. I see this morni

[Therion] A totally unreasonable request

I have produced a number of Therion models which are viewed using Loch. I have to say that I am tremendously pleased with the visualisations that they give. However, we always want something more, don't we. One of the extremely useful features is the ability to drop surface data and maps on to

[Therion] Importing Survex files

Owing to some features of my dataset, including, as I have flagged up before the fact that Therion is not as flexible as Survex when it comes to data entry, in that it requires a clino column even when the data has not been collected, I am still having to import some survex 3d files into my mod

[Therion] cs OSGB options

On Sun, 20 Nov 2011 17:35:59, John Stevens wrote: > > I have had problems with this command if I am not working in areas ST or SN. > (Mendip , west part of South Wales.) > > using cs OSGB:SO # (east part of South Wales) > > I get error ;- > > therion 5.3.9 > initialization file: C:\Program F

[Therion] Problem with diving data

I can understand why Therion wouldn't 'like' diving data with zero length legs, but that is bye the bye. If you list LRUD data separately from centre line data with the heading of, say: data dimensions station left right up down then you should get everything in the correct place. Graham

[Therion] Generated PDF compliant to spec

PDFs generated by me from Therion 5.3.8 are reported by Acrobat as being pdf version 1.5, that is compatible with Acrobat 6 and above. I'm afraid I don't know Ghostscript, but Acrobat will export as jpg. Graham --

[Therion] Offset legs in diving data

I have some diving data, in the form data diving from fromdepth to todepth compass tape LRUD data has also been collected for these sumps. I would like to be able to display the latter as offset legs in the th2 file to aid in drawing the map. How does it need to be entered into a th file and ho

[Therion] Offset legs in diving data

I now have the LRUD working in Therion, having worked out the subtle differences between Survex and Therion syntax. The file compiles Ok and generates a nice loch file. However, I cannot find how to export the XVI format for loading into the th2 file. There seems to be no export option. Graham

[Therion] Missing data

I am still dealing with a lot of legacy data from the 1950s and 1960s where clinos were not used. Using Survex this is not a problem, as I just enter the data after a line: data normal from to compass tape ignoreall and the program will run. In Therion, however, the same circumstance gives the

[Therion] Therion Digest, Vol 78, Issue 10

g Course Guide for Therion from the UK Cave >Surveying Group (Andrew Atkinson) > 3. Missing data (Graham Mullan) > 4. Re: Training Course Guide for Therion from the UK >CaveSurveying Group (Bruce) > 5. Re: Training Course Guide for Therion from the UK

[Therion] "missing" surface leg

I have a survey that consists of two short sections of passage leading from each side of a small closed depression. The caves are linked by a surface leg across the depression. This leg is flagged as surface. On the 3d file that seems fine, but on the lox file the image shows a defined passage

[Therion] LRUD data

> From: McLendonJP at aol.com > Also, I experimented with using "walls on" to see if it would get >Therion > to use the LRUD data to determine depth. It didn't, but I found that > Therion is reading my LRUD data as meters instead of feet. I use the >command > "units length feet" before the data b

[Therion] My cave is on the middle of the sea on google maps ...

Hi Laurent For one cave in the Dordogne, I used cs UTM31 The co-ordinates to fix the entrance were then read off from a UTM grid overlay on the digital (CD) version of the IGN map You may find this site helps http://www.geoportail.gouv.fr/accueil, though I seem to only be getting lat-Long or L

[Therion] export of dxf data

As mentioned earlier, I have given a dxf file to someone to see how it imported in their CAD system. It comes into their system OK, but seems to have lost the correct grid co-ordinates, in this case OSGB: ST in doing so. Does anyone else have any experience of this? Graham -- graham.mullan at

[Therion] clashing areas

How do I get to show boulders or debris on the floor of a sump? Whether I put the debris area before or after the sump area, the rocks remain hidden by the water. In the end I hand drew some big boulders, after the water, which now are visible but also appear not to be wet. Graham

[Therion] Splays in pdf plans (Andrew Atkinson)

In a message, Andrew wrote: > I hope this can be done with symbol-show, but cannot fine what to put > after can anyone help > > Andrew and Bruce replied: > Andrew > > Not sure what your question is. > If you include the survey centreline in a map definition, then splay shots > and regu

[Therion] Cave length discrepancy

When generating a pdf for one cave, the automatic title reports a slightly shorter length than that reported by X-therion. Has anyone else had this? Graham

[Therion] Cave length discrepancy

Update it looks like our cave length problem was down to a couple of small segments being left off the map as they hadn't been drawn onto the plan. In our defence, that's as they are near vertical blind pits that had been surveyed separately to the bit of cave above them. Graham

[Therion] Line widths in pdf

Bruce Thank you that was the right piece of code. You have to play with the figures to get the relevant thickness for any given image. I ended up with def PenA = pencircle scaled (u/4) enddef and with all the other lines altered to (u/4) as well. There seems to be a lower limit, so if you try to m

[Therion] Fonts

What, exactly, is the font that Therion uses when producing pdfs? It isn't Arial, although it is quite close. Graham

[Therion] Therion (software) page deleted from Wikipedia

The simple answer to this Martin, is that you need to understand that wikipedia is administered by lunatics. Sad but true. Graham -- graham.mullan at coly.org.uk 0117 9502556 or 07887 637064 (or 0844 2327803) On 25/04/2013 11:00, therion-request at speleo.sk wrote: > Send Therion mailing list s

[Therion] Annoying joins

Thanks to a way that a survey was carried out, I have a junction between a scarp in one survey and two scraps in another. No matter which way i try to sort the joins, nonsense results. Is there a more specific way of joining lines that just specifying scraps? Graham -- graham.mullan at coly.org.uk

[Therion] Annoying joins

Thanks guys, I guess that advice translates as "RTFM!" However, I note that the specific ID seems to relate to a line rather than to a single line point. When I add these in and write my joins accordingly, the problem is not resolved, the output merely becomes differently wrong. Experience would su

[Therion] Therion et al on Win 7 or 8.1

I have been running Notepad++, Therion, Survex, PocketTopo, Topparser and Adobe pdf readers on W7 for several years. The only problems I have had are with Aven & that's down to that program not W7. I have never had a problem with Xtherion not recognising thconfig files without a name extension.

[Therion] Therion et al on Win 7 or 8.1 (Wookey)

Wookey wrote: I shall just point out that world's best-maintained cave-surveying operating system is (IMHO) Debian, so if you have to change OS you should at least consider that one. If cave surveying was all that I did, I would, but it isn't, so I can't. Graham

[Therion] Therion Digest, Vol 96, Issue 6

> Bruce wrote > > PS - I see two Notepad++ users - is that coincidence because it is good software? Or because of the entry in the Therion wiki? > In my case, I was introduced to it for coding html. It's brilliant for that. But, yes, this is now OT Graham

[Therion] PDF display

I have just noticed that Adobe Acrobat and the (unnamed) pdf viewer currently opening from Firefox on this machine render coloured files very differently. It's not just that the tones are different, but, for example, in Acrobat boulders and the passage containing them are the same shade. In the oth

[Therion] PDF display

It's strange, but I thought that the whole point of pdf was that the document would present in identical fashion across displays and platforms. Has anyone tried printing from different rendering engines & seeing in what ways the results differ? Screen display is all very well, but if you are havin

[Therion] vertical magnitude

Someone has just suggested that a facility to exaggerate the vertical magnitude when vieweing elevations might be useful. I agree & know that such a distortion has been used in diagrams in many papers over the years. Is there any possibility of putting this on the 'wants' list? Graham -- graham

[Therion] Tricks for drawing boulders on sand area without sand inside, the boulders?

Certainly when I have done that, or similarly drawn boulders within a sump, the only way to avoid the sand appearing where it shouldn't is to define the line around the boulder as part of the fill boundary. Graham -- graham.mullan at coly.org.uk 0117 9502556 or 07887 637064 (or 0844 2327803) O

[Therion] Options for converting splays in my Cave Converter tool

I agree with Andrew and Martin. Splays are a different - and in my view more useful - form of data from LRUD. Keep them as splays. One or twice (in Therion) I have needed to convert a splay to a leg, but that is a highly selective process and not for a conversion tool. Graham -- graham.mullan a

[Therion] TopParser

Bruce Apologies if the instructions don't make full sense. I wrote them as a user, having had the program tried out on me by Andrew. The 'input' folder is simply that, it's where the Pocket Topo file that you want to use currently resides. In our usage, it tends to be the folder on the SD card

[Therion] Therion Digest, Vol 90, Issue 9

Footleg said: > what difference in water > levels could be expected between the upstream and downstream ends of > the sump? and Wookey responded: > This is a question for hydrologists, not cave surveyors :-) Wookey is wrong. Without the data from survey and from geodesics the hydrologist would

[Therion] PDF generation

I am having one of our surveys printed professionally as an A1 poster and a couple of issues have arisen that it is worth users being aware of. One is that the printer's software had a problem faithfully reproduced some fill areas, mostly stal flow. They solved it but it is worth keeping an eye

[Therion] Line widths in pdf

Is it possible to control the line thicknesses in pdf files? When I export my pdf as an image file into publishing software, the lines are much too thin. I have played with scaling but it seems not to make much difference Graham -- graham.mullan at coly.org.uk 0117 9502556 or 07887 637064 (or 084

[Therion] Possible bug in elevation xvi (Dave Clucas)

Is the problem just in the xvi file? Does your data generate a proper looking 3d file and/or lox file? Graham -- graham.mullan at coly.org.uk 0117 9502556 or 07887 637064 (or 0844 2327803)

[Therion] Therion 5.3.11 fails compile in Loch

Sometimes I wonder why all the geeky types complain about Windows ;-) Graham

[Therion] Colouring by altitude

Olly and Marco are right, of course, that consistent colouring between plan and elevation does help in visualising the correspondemce between different parts of the cave. This does not *need* to be by elevation (although that can sometimes be useful) and indeed that might even cause confusion where

[Therion] FW: Colouring by altitude

Olly and Marco are right, of course, that consistent colouring between plan and elevation does help in visualising the correspondemce between different parts of the cave. This does not *need* to be by elevation (although that can sometimes be useful) and indeed that might even cause confusion where

[Therion] RE :elevation profiles

Bill Gee wrote: Hello everyone - I have several questions regarding elevation profiles. I am not sure this is the correct term, so here is a link to a map which shows what I am looking for. http://www.planivy.cz/aktivity/47/planivy_mapa.png The elevation profile is the bottom part of this map.

[Therion] Compatibility with Survex

In the latest project in which I am involved, I am having to import data from Survex (actually from Compass via Survex but that's another story!). This requires importing survex 3d files. The problem that I have is that .3d files generated in the most recent iterations of Survex cannot be read by T

[Therion] Compatibility with Survex

Thanks guys. Yes, I am doing as Footleg suspected and importing already generated survex.3d files in this case. That's partially to save time, as I seem to be on a deadline with this, strange feeling for a survey project, and that's the way much of the data is getting to me. I have also been given

[Therion] Importing Compass files

Jonny Prouty wrote: Hi Graham, You can import a Compass PLT file directly into Therion, but not a DAT as far as I know. Best regards, Jonny Thanks Jonny, I assume that would be by using similar syntax to that used to import Survex.3d files. However, as I would need to firstly write a project

[Therion] Importing Compass files

Olly Betts wrote If there are other formats people would find it useful to be able to read, it's probably not hard to add support for them. Cheers, Olly I am very rusty with the way they are organised, but if there is any way of getting Survex and/or Therion to read files from Walls I'd be g

[Therion] Compatibility with Survex

Thanks Stacho Graham -- next part -- An HTML attachment was scrubbed... URL:

[Therion] problem

I don't know much about coding, but our files contain \ rather than just You could try that. Graham

[Therion] Displays in the landscape

Amongst other things, Julian Todd wrote: "The big idea is that we should be able to walk around the landscape holding our big tablet in front of us giving an X-ray view of the cave underneath us. Maybe you could hold it up against the mountain and see all the cave systems inside of it." An exce

[Therion] Therion & Walls

Further to Robert Countess's post, with which I cannot help, I just continue to wonder at why Mac's are deemed to be so 'easy to use'. Does anyone (Footleg?) have a converter which will take Walls data & import it into a format acceptable to Therion? I have some, though by no means as much as Ro

[Therion] Data set organisation

Rob If you want to see how 'some' therion data sets are organised go to http://www.cave-registry.org.uk/ and take a leisurely look at some examples. Graham

[Therion] Data set organisation

Rob At that source, some data, in this archive: http://www.cave-registry.org.uk/burrington , notably East Twin Swallet, did come from Walls, but was retyped into Survex by hand, as we then had no conversion program available to us. From what I recall, Walls does organise data very differently to

[Therion] Colour control

Is it possible to ask for more & better control over the use of colour? One of the ways in which this is useful is in allowing viewers to quickly match the same parts of a cave between plan and elevation. This can be done in a straightforward manner if you have one plan and one elevation as the

[Therion] Best practice - orientation of original sketch? (Bill Gee)

Bill Gee said: "My solution is to choose a map rotation early and stick with it, and also to not put images on the map until almost the last step." This presupposes that the cave will never be extended again, especially in 'unexpected' directions. Let us say that North up is chosen as a map orien

[Therion] Joining old and new surveys

On Tue, 17 Feb 2015 08:15:16 +0200, Steven Tucker wrote Hi, I have an old survey from the 80s and I have new sections that I want to add with Therion. The old survey has no centerline data. I have redrawn the old survey in a th2 file and allocated 3 points which correspond to 3 different entra

[Therion] Joining old and new surveys

On Tue, 17 Feb 2015 09:12:00 +0100 Martin Sluka wrote >It is really a nice piece of software. I use http://winebottler.kronenberg.org >to use it on Mac. Maybe for Linux there is something similar. Yes it is, very easy to use in most cases. >As I checked, Compass .dat file is small subset of The

[Therion] Therion doesn't run on Windows (rowena)

Dave One wonders quite what you are doing to get to that command line. This machine is running Windows 8.1 and has Therion 5.3.16 installed. On installation, Therion placed a shortcut in my Start menu. That points, as does Rowena's at "C:\Program Files (x86)\Therion\bin\wish86t.exe" "C:\Program

[Therion] Turned through Angle Survey

Martin I think Andrew is referring to a Total Station survey, though I presume that data from an old fashioned theodolite would look much the same. What he needs, I guess, is an automatic way of correcting (calibrating?) the horizontal angles with regard to North when the traverse is connected in

[Therion] degree symbol

How does one get a degree symbol into a point label? I have seen a complex way of coding one into a map comment in a thconfig file, but it would be better if one could simply put it into a label's text in a th2 file. Graham -- graham.mullan at coly.org.

[Therion] Therion tutorial

Nick Bairstow wrote: "I have been giving some thought to producing a tutorial to follow on from Footlegs wiki item. Unfortunately it's not a simple as I first thought. Over the next few months I will attempt to come up with something that will enable a novice therioneer understand the next steps f

[Therion] Therion Digest, Vol 117, Issue 8

In Therion Digest 117.8, Juan Corrin said: > It seems daft to me that enthusiastic surveyors are not using the software because of its complicated front end. > If someone finds data entry into Therion complicated, then they must have had serious problems making notes in a paper note book. I am n

[Therion] Map to Data

Bruce wrote: "Also notice you have added a link to an executable for converting maps to data. Is there a page or some information about what it is and how it works? Some might be nervous about downloading an executable directly without any explanation about what it is and how it works (in case

[Therion] Therion Digest, Vol 127, Issue 11

Martin Sluka said > 19. 7. 2016 v 12:12, Graham Mullan : > > The one thing to remember is that its output is a Compass data file which > means that whatever you think you did when using it, it will automatically > convert all lengths to decimal feet. It looks that last version

[Therion] Colouring by map or scrap

The problem that I have with colour is that assigning the colours automatically means it's difficult to get matching colours on plan and elevation. It works on straightforward cases, you just put the maps in the same order on plan & elevation & it assigns the colours in the same order. This does no

[Therion] Simple Android Software with export to Therion

The question is, Bjørn, have you found a decent Android tablet that has a good screen for drawing on using a stencil and is also 'caveproof'? Without this, we cannot really move on from PDAs. Graham ___ Therion mailing list Therion@speleo.sk https://ma

[Therion] Simple Android Software with export to Therion

Cookie said: "I notice the Galaxy Note GT-N7000 can be had for less than £100 on ebay. It has a proper digitiser." How easily can they be made proof and what is the battery life like? Graham ___ Therion mailing list Therion@speleo.sk https://mailman

[Therion] Import to Therion from Qave

Hi All Someone I am working with is collecting his data using an application called Qave. He is having a problem exporting to Therion to do the final drawing. I have no experience of Qave (spoiler, I've never heard of it before) so can offer no advice as to how to do this. Can anyone on here a

[Therion] combining several lox files

Benedikt Hallinger said: " the last problem now is, that the surface lox is in a different coordinate system than the caves (EPSG:31468 vs. lat-long) :/ I hoped loch would recognize this and recalculate as appropriate, but that was not the case. Is there some option to convert conveniently?" I

[Therion] view several caves in 3D (Philippe Vernant)

Phillipe Vernant said: I have several caves in the same area, and I would like to see them all in 3D. I have a .th file that have the links to all the cave.th and so I can compile to get the 3D model of all the caves, but, can I compile each cave independently and then join them all up in one 3

[Therion] Mud and clay

Rob Countess wrote: " Well, in my mind, clay is a more specifically defined substance based on mineral content and particle size. Mud is larger particles, more organics, and less homogenous. Clay is what you make pots from and is less frequent in Canadian caves in my experience ..." Clay is so

Re: [Therion] Multiple fixes for the same point

Andrew has shown up an interesting flaw in both Therion and Survex. A single fix of a point, unless otherwise qualified, will always be presumed to be more accurate than multiple fixes than multiple fixes even though (I suppose, I don't have the maths) the latter should be better. Unless one is

Re: [Therion] How to do better join from scraps in different .th2

Am I reading this correctly? You are saying that Topodroid exports every scrap as an individual pair of .th and .th2 files? If that's the case, you don't need a protocol for working in Therion, you need to writers of Topodroid to alter their export protocols so that your entire day's surveying i

[Therion] Exporting 3d models

Is there any plan to allow the export of lox models in pdf format, so that they can be manipulated in Adobe Acrobat Reader? This would allow 3d models to be viewed more widely, by users who otherwise have no need to download & install Therion. Graham graham.mul...@coly.org.uk __

Re: [Therion] Exporting 3d models

What about webgl, does Therion support it? -Original Message- From: Martin Sluka [mailto:martinsl...@mac.com] Sent: 21 October 2017 17:02 To: List for Therion users Cc: Graham Mullan Subject: Re: [Therion] Exporting 3d models What about webgl? m.s. Odesláno z iPhonu 21. 10. 2017 v

Re: [Therion] Therion Digest, Vol 143, Issue 1

Ben Cooper wrote: Is there a way to incorporate Theodolite data into Therion? We dealt with historic theodolite data by fudging it and using the generated legacy listing of fixed points. However, when needing to use a total station in an area of a show cave with too much ironmongery to use magn

[Therion] Development 5.4.1+4369eea inverts and recolours altitude

Are we talking about relative numbers (depth of cave) or absolute numbers (height above sea level)? The former may run differently to the latter. I usually use absolute numbers, if at all possible. Graham ___ Therion mailing list Therion@speleo.sk htt

[Therion] TerrainTool

Mike McCombe's TerrainTool has been fixed and is available again from http://www.ubss.org.uk/terraintool/terraintool.php Download and enjoy. It may not use the latest data but it remains the most straightforward way of adding topographic detail to Therion 3D models. Graham

Re: [Therion] SDs for distoX surveys

I am not sufficiently versed in the maths to suggest what figures might be used, but I do want to know why you think that the 3-times feature might affect the expected error for the angles but not for the length? Graham -Original Message- From: Survex On Behalf Of Wookey Sent: 04 August

[Therion] Fix station point using only 2D

I think there are two issues here. I have skewed surveys built on 2D data using 3D fixed points and that seems, to me, to be what is happening here. Firstly, if your radiolocation point has no depth information then you cannot use it for a 3D skew which I think (I may be wrong) as it is insuffic