- Therion - speleo.sk

Re: [Therion] Showing qestion mark texts broken?
by Benedikt Hallinger 05 Jan '19

05 Jan '19

Forwarding an off list mail to me that explains Am 2018-12-24 11:27, schrieb Marco Corvi: > benedikt, > > from my tests, > options, eg "-text", are referred as ATTR__text (double underscore), > custom attributes, eg "-attr code", as > ATTR_code (single underscore) > > feel free to forward to the list. > > thx for pointing out the error in my page, > > marco

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changed definition of drawing of centreline
by Bruce Mutton 05 Jan '19

05 Jan '19

Hi Interested in the change <https://therion.speleo.sk/wiki/examples?do=diff&rev2%5B0%5D=1546628211&rev2 %5B1%5D=1546628298&difftype=sidebyside> to the line survey (centreline) examples in the wiki that Martin just made (I'm up for a modest amount of metapost learning). I can follow what the new more complicated metapost is doing, and can understand that it might be better practice to do it that way. But is there no place for the more direct and simpler 'draw p' approach? Or did it not work? (I have not tested them). Perhaps both versions could be listed on the wiki, with some comment about pros and cons or why one approach is better than the other? Bruce

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A bunch of symbols needed
by Bill Gee 04 Jan '19

04 Jan '19

Hello everyone - I have recently taken on the task of managing a survey project for a highly commercialized cave. Roughly speaking, about half of the cave is tourist adapted and the other half is wild. In total, my best guess is something around 2000 meters of cave. The existing map was made around 1960 to 1962. It was a good map for that time but is badly in need of update. We are going to resurvey the whole cave from scratch. The old map will serve as a reference for place names but otherwise will not be used. For the tourist parts of the cave I am going to need a bunch of symbols. Before I go to the trouble of defining them myself, I want to ask if anyone has already created them. If so, I would like to utilize some "best practice" ... also known as "plagiarism"! :-) "On Station" has symbols for many of these items, but I do not see them called out in the Therion Book. I was at the cave a few days ago. I think I will need symbols for the following items: Paved trail Tiled floor Bridge Hand rails Boardwalk - Raised walkway over a man-made lake Wood benches Artificial light fixtures Stairway Man-made dams Display cases Midden Does anyone have any of these already defined? If you are interested, there is a Web site for this cave. https://starkcaverns.com/ Thanks! -- Bill Gee

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a_blocks_SKBB_ (expr p,o,s_beg,s_end,d_beg,d_end) =
by Andrew Atkinson 31 Dec '18

31 Dec '18

When playing with the area blocks in the data.mp file I found def a_blocks_SKBB_ (expr p,o,s_beg,s_end,d_beg,d_end) = Different from def a_blocks_SKBB (expr p) = The name has an _ on the end, however, I have no idea how to use it, also if I copy it in to a code endcode layout I cannot get it to work even if I make it def a_blocks_SKBB_TEST (expr p,o,s_beg,s_end,d_beg,d_end) = It seems to go into an infinate loop, is this maybe as I have not defined the extra variable o,s_beg,s_end,d_beg,d_end, if that is what they are, and if so how do I define them. Basically it looks interesting, but I have no idea how to play with it, Help! thanks Andrew

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Metapost area block
by Andrew Atkinson 31 Dec '18

31 Dec '18

After a meeting the UK Cave Surveying Group had in November, some thought the the block did not look that good, and could be improved, with different sided block. Work started and I have eventually got round to finishing it. Based on the AUT version (which is based on others by the looks of it.) I have made it so that there are variables at the start so people can adjust it to their personal preference with nearly no knowledge of MetaPost (not that I have much!) https://therion.speleo.sk/wiki/metapost#customisable_area_blocks_with_diffe… The loop for drawing different sided blocks could be improved, this is the quick and dirty play. Some things I could really do with help improving. To get rid of the transparency of other blocks below, I have had to call thclean three times, there has to be a better way. Also blocks at the edge, there tends to be too much space, I have an infinite loop, which works, sort of, but tends to leave spaces, a better solution would be good. Blocks tend to pile up near walls, but that would need to be able to differentiate between the lines that make up the border, can that be done? I have also added a fixed rotation, then some variability around that, to try to simulate bedding blocks. Currently uniformdeviate is used, MetaPost seems to have normaldeviate, which may be better for this, but when trying it in Therion, it appears not to be a recognised command? This also leads to the question, can any of these settings be accesses from the th2 file, maybe as an option rather than by changing the MetaPost? For people to play, I've placed the test files at http://wotcc.org.uk/__Survey/BoulderTestArea.zip sorry lots of questions, thanks in advance Andrew

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No passage walls converting .plt to .lox
by Marco Menchise 28 Dec '18

28 Dec '18

Hello, I have a Compass .plt file which I am able to display with Loch. I happily see station names and passage walls. I'm trying to generate a .lox file to display with CaveView on the web. CaveView needs .lox format. To do this, I import the .plt in Therion then export the lox model enabling all features (walls, splays, etc.), but I get no walls in the final file. I tried to generate a .lox model from a test .th file written by hand and I was able to get all the features. Am I missing something? Thanks, Marco

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Re: [Therion] Volume Calculation - Therion Digest, Vol 156, Issue 13
by Dave Clucas 16 Dec '18

16 Dec '18

In Loch export as a vtk file and open in Matlab. In Matlab you can get the volume of the model. Dave Clucas dave.clucas(a)icloud.com <mailto:daveclucas@icloud.com> Exploring the World - One cave at a time > On 16 Dec 2018, at 19:00, therion-request(a)speleo.sk wrote: > > Send Therion mailing list submissions to > therion(a)speleo.sk > > To subscribe or unsubscribe via the World Wide Web, visit > https://mailman.speleo.sk/listinfo/therion > or, via email, send a message with subject or body 'help' to > therion-request(a)speleo.sk > > You can reach the person managing the list at > therion-owner(a)speleo.sk > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Therion digest..." > > > Today's Topics: > > 1. Lox model volume calculation (chris pennos) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Fri, 14 Dec 2018 16:10:02 +0000 > From: chris pennos <pennos4(a)hotmail.com> > To: "therion(a)speleo.sk" <therion(a)speleo.sk> > Subject: [Therion] Lox model volume calculation > Message-ID: > <AM0PR10MB2212DDD87B752C2ECF9FC9D8F2A10(a)AM0PR10MB2212.EURPRD10.PROD.OUTLOOK.COM> > > Content-Type: text/plain; charset="us-ascii" > > Anyone knows how to calculate the volume of a .lox model? > > Thanks in advance > > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > Therion mailing list > Therion(a)speleo.sk > https://mailman.speleo.sk/listinfo/therion > > > ------------------------------ > > End of Therion Digest, Vol 156, Issue 13 > ****************************************

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Lox model volume calculation
by chris pennos 16 Dec '18

16 Dec '18

Anyone knows how to calculate the volume of a .lox model? Thanks in advance

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Therion Window gets smaler every time you compile
by Torsten Schnitter 10 Dec '18

10 Dec '18

Hi I'm using Therion 5.4.1+3bee73c on Windows 7. But also tested with 5.4.1+975063a and same.behaviour Every time when I click on "Compile" (or use F9 instead) the window from Therion get's a bit smaller in size (up down direction). Is there a fix for that? regards, Torsten

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topodroid to therion
by Marco Corvi 04 Dec '18

04 Dec '18

Is there a workflow that is easy to use with ‘TopoDROID to Therion’ process, that also allows more than one scrap per survey trip file? With limited experimentation (and making assumption that TopoDROID ‘sketches’ might be approximately equivalent to Therion ‘scraps’), I have not yet found a way that is easy to implement and encourages a naming convention that eases tracing of scraps to their parent TopoDROID file. And breaking existing scraps into smaller scraps is a task I find unnecessarily tedious, when one could just have drawn smaller scraps in the first place. Am I missing something obvious? What are experienced Therion users who subsequently became proficient with TopoDROID as a data collector doing in this space? -------------------------- topodroid has many features requested by users that probably use other programs than therion to draft their cave maps, anyways, i use therion for my cave maps, and here is what i do. (0) a note3 with a stylus: reasonable compromise between the size of the android and that of the caves (lucky surveyors might go for a 7" tablet) (1) enable only drawing tools that are supported by therion, otherwise i must go for metapost code (2) each topodroid survey can have many sketches, and i usually draw several sketches, except for very simple surveys. (3) switch off fractional 'extend" (4) switch off loop closure compensation: better see potential blunders (5) i usually use "normal" line style, and the decimation button to simplify them (if need arises) (6) pre-exporting: check every sketch with joining sketches using the sketch outline feature, and make then fit nicely (7) it may happen that a sketch needs to be splitted in two, but this is rare as i'm used to draw small sketches. i never user sketch merge (8) i use automatic station points, even if, unfortunately, topodroid puts in all the stations in the convex hull of the sketch, and there can happen spurious ones. i do not remember if midline hide helps for this, however, midline hide is something i use only when the midline is very messy, i usually go over the station points and remove those that do not belong to the piece of midline of the skatch: this is easily done with a "good" text editor (9) i usually do not use "line continuation", but i fix the gaps between wall lines with point line editings (snap to point and merge with line). i sometimes use the feature that shifts a portion of a line, but i find often easier to redraw the line and erase the old one. (10) i have the feeling that outline is no longer very important to therion (it is however for csurvey, but this is ot on this list), thus i do not pay much attention that wall lines are properly oriented. anyways when i notice a line should be reversed i do it, as it's quick (11) automatic export because it's a nuisance to export each sketch (12) ... other things i do not recall at the moment marco

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