June 2018 - Therion

Line mark?
by Markus Boldt 17 Jun '18

17 Jun '18

Hi, what means the error: line mark not a keyword -- scrap-21-Wand-L-ob:0@Steeb-GS-01 when I use the join-command? Regards Markus

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Wanted: Flag to exclude certain legs from loop closure algorithm
by Michael 14 Jun '18

14 Jun '18

Hello, When therion detects loops, it applies a loop closure algorithm, which distributes the error across all legs of a loop. Is there a command or flag to exclude certain legs (i.e. centerline segments) from loop closure algorithm, so that they are not changed? I searched the Therion book and the Wiki FAQ, but couldn't find that information. Michael

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Therion and vtk7.1
by Philip Balister 11 Jun '18

11 Jun '18

Anyone build therion with vtk7.1 on Fedora? It feels like some vtk libraries have new names. Philip

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needed double shot - exclude from cave length
by Markus Boldt 11 Jun '18

11 Jun '18

Hello, if I have a leg where I need to separate shots (from the one point I don`t reach a continuative part) and I want to exclude the one from the calculation of the cave-length. What have I to write in my .th-File in the data-lines to exclude it from the calculation of the length but not from the centerline? I think it is simple, but I have found no idea in the wiki. Regards Markus

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extend
by Marco Corvi 11 Jun '18

11 Jun '18

i put together comments to all the posts about "extend" (1) yes, -1 = left, 1 = right and vert is in the middle (0) (2) evaristo, with his proposal of idealized profile not only suggested a way to control shortening, but that also allows stretching. that's good (3) bruce described a procedure for a program to automatically decide how to draw splays in the extended profile. it's more or less what topodroid implements: at a station the range of azimuths is divided into angular sectors one for each leg at that station. a splay is "projected" using the leg of the sector its azimuth falls in. (by the way, to really be in bad luck one need three vert in a row) (4) a program may assign extends to splays automatically, but the user should always be allowed to override what the program does. (that's why a user can set extend also for splays, in topodroid) (5) "cave length": in the (old) manuals i studied that the cave length is "computed" measuring the length of an ideal line that goes thru the middle of the passage. now it is rather cumbersome to compute that line, and all the programs uses the length of the midline, with some discount (duplicate in therion, L in compass, and so on). the problem, i think, is that cave length is not a thing that can be well-defined. so the numbers we give for cave length are an approximation of a fuzzy concept. marco

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Detect the original Scale/Resolution–factor from the head of the th2-file
by torstein finnesand 09 Jun '18

09 Jun '18

Hi, After importing a txt-file from PocketTopo into Therion; is it possible to detect the original Scale/Resolution–factor from the head of the th2-file, or is the xvi-file the only place where this is stored? Torstein

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Re: [Therion] Conflict between "extend ignore" command and inverse legs
by Marco Corvi 08 Jun '18

08 Jun '18

I have commented all the splays "extend ignore", and Therion is doing now a good job, ignoring the appropriate leg (extend ignore 83 92). All the splays "extend ignore" was confusing the Therion compiler. This data is an export from Topodroid, that incorporates the "extend ignore" command before the splays shots. I will comment to Marco Corvi on the problem. @ Evaristo & Bruce: what about a command "extend auto", which means let therion decide how to extend the splay shot ? for the moment therion parser could behave as if the command weren't there. marco

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Conflict between "extend ignore" command and inverse legs
by Evaristo Quiroga 06 Jun '18

06 Jun '18

Hi, I usually do my surveys doing inverse measures. I go ahead by positioning the points, and doing the measurements with the distoX2 looking back (inverse) and finally do the splay measurements at that destination point. My assistant is in origin point, and don't have survey experience, is only putting the target in the anterior point . With this I get all the data (leg and from and to splays) to be able to draw the sketches. You can look a example the data results: > extend left > 82 81 10.47 147.7 1.4 > extend ignore > 82 . 0.53 230.7 1.2 > 82 . 1.85 66.3 -6.5 > 82 . 1.19 45.5 60.1 > 82 . 0.65 300.5 -88.8 > 82 . 2.76 105.7 -5.8 > 82 . 4.54 127.2 -0.9 > 82 . 5.86 132.4 -2.1 > 82 . 1.52 182.2 -8.3 > 82 . 4.45 156.5 -3.0 > 82 . 2.62 20.4 -9.8 > 82 . 2.39 311.0 -6.3 > 82 . 3.95 324.1 -6.9 > extend left > 83 82 7.95 146.4 1.4 > extend ignore > 83 . 0.35 235.9 1.0 > 83 . 1.87 38.5 -6.1 > 83 . 0.94 5.9 76.3 > 83 . 1.06 40.4 -80.9 > 83 . 4.49 117.2 -5.0 > 83 . 2.61 85.7 16.9 > 83 . 2.87 107.9 -6.0 > 83 . 2.98 154.2 -11.3 > 83 . 3.94 148.4 -3.6 > 83 . 5.92 127.1 -5.7 > 83 . 3.67 327.8 -5.8 > 83 . 4.40 300.2 -12.5 > 83 . 2.65 334.7 -20.5 > 83 . 5.62 132.6 3.5 > extend left > 84 83 8.40 132.5 3.5 > extend ignore > 84 . 1.39 215.1 23.4 > 84 . 2.51 101.7 -0.8 > 84 . 1.89 195.1 67.5 > 84 . 2.00 100.7 -28.2 > 84 . 3.16 118.1 -2.7 > 84 . 4.68 149.7 1.0 > 84 . 5.15 62.5 2.7 > 84 . 2.12 33.9 -1.3 > 83 . 4.99 250.9 -7.6 > extend left > 85 84 5.03 234.4 -6.3 > extend ignore > 85 . 2.56 261.5 -0.7 > 85 . 1.34 276.4 31.0 > 85 . 1.05 282.5 -62.6 > 85 . 4.43 304.8 -1.1 > 85 . 5.80 314.2 -1.4 > 85 . 1.33 181.0 0.5 > extend left > 86 85 6.33 149.5 -2.0 > extend ignore > 86 . 1.19 252.8 -18.6 > 86 . 2.85 85.3 3.7 > 86 . 0.92 225.3 -84.7 > 86 . 2.23 136.3 10.5 > 86 . 3.96 135.4 -5.4 > 86 . 3.83 143.8 -8.1 > 86 . 2.25 203.4 -10.9 > 86 . 3.50 186.7 -8.6 > extend left > 87 86 3.05 187.0 -8.7 > extend ignore > 87 . 2.59 223.7 -18.5 > 87 . 1.09 32.0 -1.2 > 87 . 1.67 183.2 59.1 > 87 . 0.58 315.6 -83.5 > > extend right > 88 87 7.46 330.8 -3.4 > extend ignore > 88 . 0.77 66.7 4.2 > 88 . 0.47 257.5 -7.8 > 88 . 2.56 326.1 74.5 > 88 . 0.41 247.0 -80.9 > 88 . 1.85 127.1 15.2 > 88 . 0.96 104.7 4.6 > 88 . 0.85 207.2 1.2 > 88 . 4.20 343.3 -16.6 > extend right > 89 88 2.20 349.0 -20.5 > extend ignore > 89 . 0.95 43.1 -5.6 > 89 . 0.72 62.1 82.7 > 89 . 0.39 99.4 -77.6 > 89 . 0.89 324.9 -26.4 > 89 . 1.43 359.5 -23.5 > 89 . 1.08 72.7 -9.7 > 89 . 1.59 105.4 -3.8 > 89 . 2.56 125.6 -5.7 > extend right > 90 89 1.39 300.3 -13.8 > extend ignore > 90 . 0.46 62.7 -3.4 > 90 . 0.50 245.3 1.2 > 90 . 0.48 246.5 70.4 > 90 . 0.70 300.2 -82.3 > 90 . 1.74 184.4 -12.0 > 90 . 3.09 169.6 -9.1 > 90 . 3.69 166.8 -8.2 > 90 . 2.02 152.3 -17.2 > 90 . 1.40 132.2 -19.0 > extend right > 91 90 5.71 340.7 6.0 > extend ignore > 91 . 0.96 37.0 2.2 > 91 . 1.04 40.9 58.3 > 91 . 0.29 34.5 -56.7 > 91 . 1.48 338.9 -0.1 > 91 . 0.99 331.4 2.8 > 91 . 1.07 3.2 3.6 > 91 . 3.51 345.8 0.1 > extend right > 92 91 2.04 305.9 4.0 > extend ignore > 92 . 1.47 305.9 -11.0 > 92 . 1.06 301.4 45.1 > 92 . 0.43 339.3 -76.8 > 92 . 1.17 348.7 1.3 > 92 . 0.56 16.6 -9.2 > 92 . 0.57 270.9 -8.5 > 92 . 1.99 270.1 -7.4 > 92 . 1.56 230.3 -14.0 > extend right > 83 92 4.24 71.7 18.0 > extend ignore 83 92 > > > extend left > 93 87 3.12 123.4 7.5 > extend ignore > 93 . 1.79 225.3 -3.2 > 93 . 1.70 49.9 -3.0 > 93 . 1.18 100.0 78.0 > 93 . 3.21 169.9 -2.6 > 93 . 2.09 88.5 -2.4 > 93 . 2.36 14.0 -2.1 > 93 . 3.78 347.3 1.9 > 93 . 3.62 300.1 -2.1 > 93 . 2.32 278.7 -3.8 In this data I have a loop. The main passage is: 82-83-84-85-86-87-93. And the secondary passage is: 87-88-89-90-91-92-83. When I compile the data and produce a XVI file, Therion is making the secondary passage the main centerline, breaking the main passage leg "87 93". I have tried to break the secondary passage with "extend ignore" commands and is unsuccessful. I also tried to rename the connection station and make "equate" sentence, and also is unsuccessful. I have also interchanged the from and to station order. I thinks is a problem with the inverse legs data and the "extend ignore" command. To avoid the problem I rename the leg "83 92" to "83B 92" breaking the loop at the secondary passage. To export the plan I put and "equate 83 83B", and to export the extended profile I comment this sentence. It works but it is a bit cumbersome. Someone has had similar problems with the "extend ignore" commands and has found some solution for its correct use? Best regards, Evaristo

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