Hi, There is an easy way to extract coordinates from the therion sql export. Then using a shell script and GMT could provide the depth of each point below the surface. I know that there is now a GMT library under Python, if they have implemented the function in the library, everything could be wrapped up in a single python script.
Cheers, Phil > On 28 Mar 2020, at 00:28, Benedikt Hallinger <[email protected]> wrote: > > cavern had eaten itself, but after pushing ctrl-c in the shell running > therion, the 3d file was written successfully and the output was nice. > > I enhanced the therion wiki a little with a link to the tool. > > Sorry, i have no clue how to cross compile this for windows. > > > Am 2020-03-27 23:51, schrieb Benedikt Hallinger: >> Hi there, >> i just wrote a small tool to do the conversion from a therion surface >> mesh into survex format: >> https://github.com/hbeni/therionsurface2survex >> It would be nice if some C++ programmers can look over the code as >> this is my first c++ endeavour. >> The program basically parses the therion source file and generates >> *fix commands out of it together with nosurvey-centerline connecting >> the stations to a mesh. >> The resulting .swx file then can be put trough survex' cavern program >> to generate a 3d file of the mesh. >> That can be easily combined with a 3d file of the cave generated from >> therion (using the import statements). For ease of use provided a >> basic example for combining in the readme. A sample to parse a mesh is >> in the projects example/ folder, however i also tested it positive >> with the rabbit cave example. >> With my dataset the calculation seems to take a little longer.... >> there are 388.800 fixe stations in the surface mesh giving a 31M >> swx-file in total. >> I hope this will finish somtime (running already for 25 minutes) but >> maybe i overloaded cavern with this. >> Otherwise i probably need to turn down the grid resolution (currently >> 10m grid size). >> Am 2020-03-26 23:23, schrieb Tarquin Wilton-Jones: >>>> However, my aven does not enable me to avtivate it in the view menu, its >>>> disabled (greyed out), i assume because i do not have surface data in >>>> the file? >>> Sounds like it. It works based on legs that have: >>> flags surface >>> 1 2 9.8 123 0 >>> flags not surface >>> Or if you have used TerrainTool to export it as a grid, it will have >>> added that for you. >>> This has been very easy for us in our projects because we either knew >>> exactly which line to follow on the surface beforehand, or we surveyed >>> the cave first then surveyed over the surface afterwards, staying above >>> the passage so we could have a useful measure of the surface above the cave. >>> In more complex caves, I rely on TerrainTool to cover the surface. >>> Looking forward to being able to use the new more accurate NASADEM so >>> that the measurements are actually accurate. > _______________________________________________ > Therion mailing list > [email protected] > https://mailman.speleo.sk/listinfo/therion _______________________________________________ Therion mailing list [email protected] https://mailman.speleo.sk/listinfo/therion
