I completely agree with you that NSEW is not not a good way to measure the shape of about-vertical passages. In fact I personally never measure dimensions in NSEW directions but in the direction of the shot (or of the preceeding shot if it is absolutely vertical), in the reverse direction, on its right and on its left. I use LRUD with Up meaning in the (horizontal direction of the shot and Down the opposite. As we have to give a bearing anyway for vertical shots, why not use it to orient the dimensions instead of a vthreshold-offset that should be changed for each new shot? Xavier Le 15/05/2012 11:04, Andrew Atkinson a écrit :
Hello
Just been play with a feature I have not used before.
First It would be clearer if on p20 of the thbook the paragraph under vthreshold
If passages are _more_or_less_ vertical (inclination > vthreshold), even UD becomes perpendicular to the shot – otherwise passages would not look very good.
The 'more or less' is very confusing
It would read better if it read
If passages are _about_ vertical (inclination > vthreshold), even UD becomes perpendicular to the shot – otherwise passages would not look very good.
Also
In some passages NSEW is not not always the best way to measure passages, rifts on the like. So for some I have dimensions measured as NW SE NE SW, possible allowing an ofset for vthreshold would be a way of solving this. eg
vthreshold-offset 45 degree
Just a thought for the future.
thanks
Andrew _______________________________________________ Therion mailing list Therion@speleo.sk http://mailman.speleo.sk/mailman/listinfo/therion
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------------------------- Xavier Pennec Senior Research Scientist / Directeur de recherche Asclepios project-team, INRIA Sophia-Antipolis 2004 Route des Lucioles, BP93 F-06902 Sophia-Antipolis Cedex, France +33 4 92 38 76 64 +33 6 78 35 16 90 http://www-sop.inria.fr/asclepios/ -------------------------------