July 2019 - Therion

Re: [Therion] Point altitude/deph, Help !
by Xavier Robert 28 Jun '22

28 Jun '22

Hi all, I think I have found a trick. The other Xavier led me to the right tracks, thanks a lot ! Finally, this is quite simple with the point altitude, and no need to change anything inside the : - If we use the point altitude only with the option -align, we get the altitude - If we use the point altitude with the options -align and -value [-1004 m] where 1004 is the altitude of the main entrance, we print the depth only for that point (Do not forget the " - " before the altitude of the main entrance), and thus, we do not erase the classic point altitude. The only (small) limits are : * If the main entrance changes, we need to manually update ALL the points that print the depth. But that should not be be everyday, and not a big issue to do that. * the symbology of the two points is the same. I will have a look for a way to modify that and let you know if I find a trick (If I copy the code of the point Altitude, and call it p_u_depth(expr pos, R, S, A), it crashes...). Cheers, Xav

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"\legendbox" "\loadpicture" and absolute paths
by rowena 14 Mar '21

14 Mar '21

Hello, I am using the "\loadpicture" capability in "\legendbox" constructs to include map sections, elevations, etc. It all works nicely on my PC where I am using relative paths to the pdf files. My club has a desire to archive the map data for posterity - ie if my pc dies or I go walkabout, the map data should still be available so that others can add to the maps as they are extended. I would prefer to have the images included using relative pathnames, rather than absolute pathnames, so that future explorers can download the map data and extend it, without having to duplicate my file hierarchy. How can I include relative paths in the \loadpicture functionality? Thanks, Rowena

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extend
by Marco Corvi 02 Jun '20

02 Jun '20

i think that extend should take values in the interval [-1,1], ie also fractional values, plus some special value such as "ignore" to open loops, and "undefined" to let the program choose, because it's a nuisance to enter a decimal number for every shot (legs + splays). therion uses the left/right normal/reverse etc. solution, and users should be allowed to set extend also for splays, if they need to. for now, let's use left/right/vert, and ignore only to open loops btw, are vertical extend considered in the computation of the cave length by therion ? marco

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World Magnetic Model
by kevin dixon 28 Feb '20

28 Feb '20

The last Therion release 5.4.3 is dated 01 Feb 2019. There has in recent years been a significant change of the Magnetic North Pole location, less so for the Geomagnetic South Pole: https://ngdc.noaa.gov/geomag/GeomagneticPoles.shtml Given the above, an out of cycle World Geomagnetic Model WMM2015v2 was released 04 Feb 2019. When will this update appear in Survex and Therion ? Thanks, Kevin Dixon

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maps on off feature characteristics
by Bruce Mutton 08 Oct '19

08 Oct '19

I've just been playing with the new maps on/off feature a little more. These are just some observations. There seems to be a bug regarding map altitudes in all cases, and scrap altitudes where the scraps are empty. On the other hand it is a good way to highlight the existence of empty scraps! The notes below may not be particularly coherent, but together with the attached log files, you should be able to figure out what is going on. Setting maps to off quadruples compile time and increases pdf size by 15 times (not sure why that should be). Maps off On running a project with 614 scraps reported; This log entry was caused by an empty scrap definition, regardless of whether the empty scrap appears in a map definition S -899999999999999990000000000000000000000000000000000000000000000000000000000 0000000000000000000000000.00 04-BangAndBeyondPlan-s2@BlackSabbath () ie scrap 04-BangAndBeyondPlan-s2 -projection plan -scale [0 0 787.4 787.4 0 0 10 10 m] endscrap It seems I have 16 empty scraps in that project, a legacy of using topparser, and not always using all of the scrap definitions that it creates. Maps on On running same project with 254 scraps/maps reported; 1. Empty Scrap causes map that contains it not to appear in log, sometimes 04-BangAndBeyondPlan-s2@BlackSabbath is empty and for some reason the following map is not reported in the log file at all. map 04-BangAndBeyondPlan -title "04 beyond the capped rock - black sabbath plan" -projection plan 04-BangAndBeyondPlan-s1 04-BangAndBeyondPlan-s2 endmap 2. All maps are reported with elevation of; M -899999999999999990000000000000000000000000000000000000000000000000000000000 0000000000000000000000000.00 3. Unexplained empty 'scrap' reported at high altitude. Looking at my data, I cannot explain why this might happen. In the 254 lines, there are only two of these. M -899999999999999990000000000000000000000000000000000000000000000000000000000 0000000000000000000000000.00 61-AngelicaPlan@MiddleEarth (61 Angelica plan) S 473.40 61-AngelicaPlan-s1@MiddleEarth () S 489.54 61-AngelicaPlan-s2@MiddleEarth () S 1219.69 @ () map 61-AngelicaPlan -title "61 Angelica plan" -projection plan 61-AngelicaPlan-s1 #9C start surveying up pitch 61-AngelicaPlan-s2 # to base of 20C endmap 4. Similar things happen with projected elevation outputs, but there are many more of empty report lines, as in 3. above, and the altitudes reported seem somewhat random and just wrong. I wonder if the altitudes are really some measure of distance into or out of the 'page'? Behaviours seem to be the same whether maps or atlas are exported. Very nice for disabling passage offsets and previews. Bruce

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Re: [Therion] Therion 5.4.2. potential bug
by Martin Budaj 31 Jul '19

31 Jul '19

On Sat, Jan 12, 2019 at 10:51 AM Michael <knollesimage(a)t-online.de> wrote: > I have now attached a minimal cave sample produced with 5.4.1. and one > produced with 5.4.2. to demonstrate the displacement. > Hi, the problem is that EPSG:31467 projection uses the "potsdam" datum and the PROJ library used by Therion changed the way how to transform potsdam datum to the standard WGS84 datum – it switched from a simple string parameter (towgs84) to using external grid file (see https://proj4.org/resource_files.html#transformation-grids for examples). No grid files are currently included in the windows Therion distribution, so the transformation is not correct in 5.4.2. Therion needs to be modified to include and use those files – hopefully soon. Best regards Martin

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Page Size
by Markus Boldt 31 Jul '19

31 Jul '19

Hello, how is it possible to "say" Therion to make a PDF-File with for example a Size of DIN A4 (21 x 29,7 cm)? I have tried Page-setup 21 29.7 20 29 0.1 0.1 cm it doesn`t work I have tried Size 21 29.7 cm It doesn`t, too The command is ignored. Greetings Markus

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Placing part of a map below another
by Bill Gee 29 Jul '19

29 Jul '19

Hello everyone - I seem to be missing something. I have made this work in the past, but now it seems that Therion is totally ignoring my instructions. Argh! I have a part of the cave where a stream flow under a tourist trail overlook. The original sketches were done on two different occasions, and I have drawn them as separate scraps. When I set up the map in the .th file, I created a map for "MainPassages" and another for "LowerStream". These are then collected into a single map. The LowerStream map has options "[0 0] below". However, the compiled map always shows it ABOVE. I tried adding a "break" between the two maps. I tried adding units to the [0 0], and I tried changing the offset from [0 0] to [20 20]. None of these made any visible difference in the compiled map. I tried removing the "join" that connects the lower stream to the main passage, but all that did was make for a sloppy join. The lower stream was still above the overlook area. I have other caves where I have done this, and it worked. What am I missing? Attached is the .th file I am using. Thanks! -- Bill Gee

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Examples / merging lines in xtherion / text
by Răzvan Dumbravă 26 Jul '19

26 Jul '19

I saw a topic with merging lines in xtherion, and someone told that it is possible in text mode? Do you have any indications how to be that done? Thank you! Răzvan Dumbravă razvid(a)yahoo.com Tel. +40 722 348825

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merge lines in xtherion
by עמרי גסטר 26 Jul '19

26 Jul '19

Hi everyone, I want to merge two wall lines into one line is there a way to do that in xtherion? I know I can do that in notepad but it would be much easier if there is a way to do it in xtherion Omri --

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