On 2012-02-21, at 21:17, Maximillian Dornseif wrote: > I might understand something wrong, but it seems to me, that > what is called `cavelength` in Therion is actually the length of all > centerlines.
Thanks for the answers I got. To sum up: "don't worry. keep in mind the distance you are traveling when passing 'crossroads' is in both directions so both directions can count for cavelength. My peers in our local caving club where not willing to accept such a Laissez-faire approach. Mind you - we are germans so we like to over specify anything. I was given the canonical german language book on Speleology "Höhlenkunde" (see http://books.google.be/books/about/Höhlenkunde.html?id=CEAJAQAAIAAJ&redir_esc=y#) on page 239f there are 5 paragraphs on "determining the total passage length of a cave". Please forgive my crude translation: The total length of a cave is defined as the sum of all surveyed passages in a cave system. It will be determined by the survey but is not the sum off all centerlines ("Messtrecken") of a survey ("Polygonzug"). If your centerline is running from wall to wall the cave length [has to be based on the center of the passage]. At branches the length of the branching passage is counted from the wall-connection ("Ansatzstelle") and not from the survey station located in the middle of the room. In bigger chambers the longest axis is to be used for calculating the cave length. Small branching passages, which have been documented by crosswise measurement are to be added to the cave length. I have attached the illustration from the page. Has anybody suggestions how to use Therion to calculate the cave length based on this definition? --md -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.speleo.sk/pipermail/therion/attachments/20120303/4b2f1a36/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: cavelength 1.jpeg Type: image/jpeg Size: 106387 bytes Desc: not available URL: <http://mailman.speleo.sk/pipermail/therion/attachments/20120303/4b2f1a36/attachment.jpeg>
