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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Interesting John<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>With your model as posted I did not get
dual tubes with walls off although I did with walls on.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>If you remove all of the point
passage-height and point dimensions from your scrap, then the behaviour of your
model seems to match the behaviour I described.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>BTW I added my previous post to the wiki
examples page <a
href="http://therion.speleo.sk/wiki/doku.php/examples#loch_models_paperless_survey_plan_scraps_and_lrud">http://therion.speleo.sk/wiki/doku.php/examples#loch_models_paperless_survey_plan_scraps_and_lrud</a><o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Not able to spend more time on this just
now (winter sniffles-back to bed), but seems like point dimensions and point
passage-height changes the behaviour.<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>A semi automated way of enabling therion
to produce accurate model passage heights using splay shots would be useful,
and it seems like Footlegs proposal might be convenient (for those of us who
don’t have to write the code). <o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Bruce<o:p></o:p></span></font></p>

<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>

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<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
therion-bounces@speleo.sk [mailto:therion-bounces@speleo.sk] <b><span
style='font-weight:bold'>On Behalf Of </span></b>John Stevens<br>
<b><span style='font-weight:bold'>Sent:</span></b> Wednesday, 24 July 2013 7:03
a.m.<br>
<b><span style='font-weight:bold'>To:</span></b> '<st1:PersonName w:st="on">List
 for Therion users</st1:PersonName>'<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Therion] <st1:place
w:st="on">Loch</st1:place> passage tube behaviour</span></font><o:p></o:p></p>

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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>

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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Bruce a very useful article but it
differs from my experience in a couple of ways.<o:p></o:p></span></font></p>

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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'> <o:p></o:p></span></font></p>

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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>I thought a couple of months ago I would
try and produce a reasonable 3d model of a cave. So I surveyed a short section
of passage with more data than I could possibly normally use. I set stations at
5m intervals and took 8 wall measurements every 1m. This would get me a lot of
splays that I could then use as vertices for a 3d model (if I could find/write
some software to make the model, not done yet)<o:p></o:p></span></font></p>

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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>I could then compare this model with the
one Therion produces and see which extra splays are really needed. <o:p></o:p></span></font></p>

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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'> <o:p></o:p></span></font></p>

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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Unlike your models I seem to get the
centreline tube in the middle (mostly) of the scrap tube. Unfortunately this
centreline tube often protrudes through the scrap tube, ruining the model. How
am I getting two tube?  I have tried various options with walls
on/off/auto or commented out, to no avail.<o:p></o:p></span></font></p>

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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'> <o:p></o:p></span></font></p>

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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>I also found the Dimensions –value
[up, down] useful but it sometimes does unexpected things.<o:p></o:p></span></font></p>

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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Passage Height was even worse for this.
If a single number was given it distributed the measurement above and below the
centreline. If + – was used it appeared on the plan but did nothing on
the model.<o:p></o:p></span></font></p>

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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'> <o:p></o:p></span></font></p>

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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>using Therion 5.3.11<o:p></o:p></span></font></p>

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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'> <o:p></o:p></span></font></p>

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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>This is a work in progress and your mail
has come at just the right time<o:p></o:p></span></font></p>

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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'> <o:p></o:p></span></font></p>

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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Cheers<o:p></o:p></span></font></p>

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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'> <o:p></o:p></span></font></p>

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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>John</span></font><font size=2
color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'><o:p></o:p></span></font></p>

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