September 2010 - Therion

plan cross-section
by marco corvi 24 Jun '11

24 Jun '11

seems that cross-section scrap must have a projection `none', which means that therion cannot use stations to scale it "properly". i had to draw a vertical cave, a sequence of pits, one on top of the next. instead of drawing a plan, with plenty of maps shifted to the side, i preferred to draw plan cross-sections nearby the shafts as cross-sections (with a section line marking their position on the pit). i would also like to have one north symbol on the map, to mark the orientation of all the plan cross-sections. i did it fiddling with the sources, but a "more stable" solution is appreciated. thanks for the help, marco

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Re: [Therion] distox
by marco corvi 12 Jun '11

12 Jun '11

On Wed, 2010-04-14 at 12:22 +0100, Wookey wrote: > +++ marco corvi [2010-04-14 09:18 +0200]: > > hi wookey, > > Is there any reason you replied off-list? I'm sure this would be > interesting to others. none. i just clicked on the sender name out of abit. > > the work on "my distox programs" is going on. > > you can get the programs and dome docs on the page > > http://marcocorvi.altervista.org/caving/distox/index.htm > > OK. good stuff. I will download, build and test tonight if I can. > > > important catch: > > my programs are meant to work with single survey. > > i rely on therion for the full cave(s) survey. > > also i do not have a portable device to take in the > > cave, so i do not focus much on working on-line, > > but on working off-line. > > OK. I do, so maybe I can help with that. I think it's important to get > something like the pocketopo functionality on non-windows devices. agree. any help is very much appreciated. > > recent changes (besides bug fixes), > > added pockettopo import/export (beat told me the file format > > and we had an email exchange about how to address the > > programs interoperability), > > worked on compass export, and therion export. > > reorganized some of the code. > > not sure these are all online. > > OK. What's the deal with the calibration algorithm? Having that remain > secret is going to be a problem. I thought the device could do its > own calibration, but apparently it needs an external app? Perhaps we > can adapt the SAP calibration code (which is Free) as it must be very > similar. as far as i read, beat algo is better. beat should have a paper published soon in CREG describing the algo. i believe that when it is published i can put my reimplementation in the sources. > What do you have and what have you agreed not to disclose? If > it's just the code then re-implementation via an explanation of the > algorithm should be fine. > > > i was considering dropping the QT3 support and work only > > with QT4 (better classes and easier interfaces). > > OK. I guess that is the way forward now. I guess that could be a > problem for GTK-based devices with limited storage. yes. marco

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Co-ordinate systems
by Graham Mullan 27 Sep '10

27 Sep '10

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(a)coly.org.uk 0117 9502556 or 07887 637064 (or try 0844 2327803)

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co-ordinate systems
by Graham Mullan 25 Sep '10

25 Sep '10

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(a)coly.org.uk 0117 9502556 or 07887 637064 (or try 0844 2327803)

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FW: example data-georeferencing
by Bruce 25 Sep '10

25 Sep '10

An example of a surface image and terrain model, but with no cave http://therion.speleo.sk/wiki/doku.php?id=bds#some_examples

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map-bg transparent
by Bruce 23 Sep '10

23 Sep '10

On the topic of maps within maps. Therion inserts images with transparent backgrounds into maps correctly - at least it has worked for me. Is it possible to get therion to create a map with a transparent background? Something like 'map-bg off' perhaps? This would be useful sometimes when inserting map enlargements within a main map output. Bruce

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AUT symbolset + legend on --> metapost exit code -- 2
by Dirk.Peinelt＠t-online.de 23 Sep '10

23 Sep '10

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Cross Sections - Scale?
by Andrew Atkinson 23 Sep '10

23 Sep '10

At last a final survey to be printed, well not quite. On closer examination, there seems to be a scale problem with the cross section. Either that or my drawing is really bad. Some of them seem to be twice the scale of the main survey, others seem to be the same. Is there a way to control this and what is the default? I have a horrible feeling that when I have imported from pocket topo, it asks which scale, some I have done at 1:200 but in the end I switched to 1:100, I hope this has not made a difference. You should be able to see what I mean on http://www.ubss.org.uk/__transfer/Charterhouse_basic_survey_small_file.pdf The ones on Route 66 (upper label) Onion Passage, look fine, but the ones on Route 66 (lower label) seem far too large, I have assumed twice scale. Practically out of time this has to go to printing, tomorrow Can I also thank all those on the list that have helped me to get this into production, and especially to those of you doing the coding Andrew

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Re: [Therion] example data-georeferencing
by Bruce 17 Sep '10

17 Sep '10

Dan Similarly to Martin I do all my image overlays (topo image, aerial photo, geology, contours, property boundaries, map gridlines etc) in a standalone GIS package, then use the result as jpg surface overlay in Therion. Therion can then regurgitate it all with the cave included as a stand alone image, or you can produce geo-referenced cave shapefiles from Therion that will snap straight into your GIS project without ever having to load the image into Therion in the first place. Which is the best way depends on what you want to do ultimately, and which application you feel most comfortable using. If you need a more detailed example than Martin has provided I can pull together a cut down example in due course. I appreciate that the hardest bit is knowing how to organise the Therion data. After 3 years I am still having new insights and have no idea if I am doing it well. Bruce

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FW: Under and over (maps)
by Bruce 17 Sep '10

17 Sep '10

>(I did not think we could colour by user specific maps, yet, or maybe I missed a change) Looking back I see we were pining for such a feature in May last year. You're right, nothing in the Therion Book, and a few experiments suggests it is still a dream. Bruce

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