[Therion] LRUD data

McLendonJP at aol.com McLendonJP at aol.com
Wed Jun 27 14:23:42 CEST 2012


Graham,
I've got the centerline and LRUD data all together in the same block, as in 
 "data normal station left right up down newline length compass clino" and  
immediately before it "units length feet" but it still treats my input 
numbers  at meters instead of feet (for the LRUD). Olly's suggestion to use 
"units left  right up down feet" works perfectly to get Therion to treat the 
numbers as  feet.
 
Thanks,
JP
 
 
In a message dated 6/27/2012 6:18:31 A.M. Eastern Daylight Time,  
graham.mullan at coly.org.uk writes:

>  From: McLendonJP at aol.com

> Also, I experimented with using "walls  on" to see if it would get
>Therion
> to use the LRUD data to  determine depth. It didn't, but I found  that
> Therion is reading  my LRUD data as meters instead of feet. I use the
>command
>  "units length feet" before the data but seems to only work for the  >tape
> measurement. Am I missing something?

Can I assume that  you have separate blocks of data for the centreline
and the LRUD? If so  then you need to enter the "units length feet" line
again after the "data  dimensions station left right up down" line.

Alternatively just take  all your measurements in metres ;-)

You are right, however, that  Therion determines depth by the difference
between the highest and lowest  stations. It is difficult to see how else
it would work. It is a trivial  matter to mark your highest and lowest
points as  stations.

Graham
> 
> 
> Today's Topics:
>  
>    1. Incorrect depth generated for legend  (McLendonJP at aol.com)
>    2. Re: Incorrect depth generated for  legend (Olly Betts)
>    3. Re: Incorrect depth generated for  legend (Bruce)
> 
> 
>  ----------------------------------------------------------------------
>  
> Message: 1
> Date: Tue, 26 Jun 2012 17:06:50 -0400  (EDT)
> From: McLendonJP at aol.com
> Subject: [Therion] Incorrect  depth generated for legend
> To: Therion at speleo.sk
> Message-ID:  <1fbcc.371cc17a.3d1b7e6a at aol.com>
> Content-Type: text/plain;  charset="us-ascii"
> 
> I recently used Therion to produce a map  for a short horizontal cave. 
The  
> cave is only a little over  100' long and the floor is almost level from 
one 
> end  to the  other. The "depth" information that Therion generated for 
the 
> legend  is 3  feet even though some of the passage in the cave is 5 feet 
high.  
> I'm assuming  that therion uses the vertical difference between  the 
highest 
> station and the  lowest station to generate the  depth number without 
regard 
> to LRUD data, is  this correct? And  does anybody have a suggestion for 
how I 
> can easily  get the  correct depth output onto my map? I can see how this 
> could be a   significant issue if you had a cave with little vertical 
extent 
>  except for a  high dome. You would have to shoot a shot to a station at  
the 
> top of the dome to  capture it's vertical extent in the  legend data.
>  
> Also, I experimented with using "walls on"  to see if it would get  
Therion 
> to use the LRUD data to  determine depth. It didn't, but I found  that 
> Therion is reading  my LRUD data as meters instead of feet. I use the  
command 
>  "units length feet" before the data but seems to only work for the tape  
 
> measurement. Am I missing something?
>  
> Sorry if  these questions are a little basic, but I've still got a lot to 
 
>  learn about Therion. 
>  
> Much thanks,
> JP  McLendon
>  
>  
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> ------------------------------
> 
> Message: 2
>  Date: Wed, 27 Jun 2012 00:10:42 +0100
> From: Olly Betts  <olly at survex.com>
> Subject: Re: [Therion] Incorrect depth  generated for legend
> To: McLendonJP at aol.com
> Cc:  Therion at speleo.sk
> Message-ID:  <20120626231042.GM21560 at survex.com>
> Content-Type: text/plain;  charset=us-ascii
> 
> On Tue, Jun 26, 2012 at 05:06:50PM -0400,  McLendonJP at aol.com wrote:
>> Therion is reading my LRUD data as  meters instead of feet. I use the 
command
>> "units length feet"  before the data but seems to only work for the tape
>> measurement.  Am I missing something?
> 
> The therion book doesn't seem to  explicitly include these in the list of
> valid quantities, but the  syntax comes from Survex so this should work:
> 
> units left  right up down feet
> 
> Cheers,
>      Olly
> 
> 
> ------------------------------
> 
>  Message: 3
> Date: Wed, 27 Jun 2012 18:09:39 +1200
> From: Bruce  <bruce at tomo.co.nz>
> Subject: Re: [Therion] Incorrect depth  generated for legend
> To: 'List for Therion users'  <therion at speleo.sk>
> Message-ID:  <6FA0C0A3E79A4D7F920D3CF3BE25F5AD at JUICEBRAIN>
> Content-Type:  text/plain; charset="us-ascii"
> 
>> I'm assuming that therion  uses the vertical difference between the 
highest
> station and the  lowest station to generate the depth number without 
regard
> to LRUD  data, is this correct? 
> 
> Yes.
> 
>  
>  
>> And does anybody have a suggestion for how I can easily get the  correct
> depth output onto my map? 
> 
> You can add some  tex code to a layout.   See
>  
http://therion.speleo.sk/wiki/doku.php?id=tex#overriding_data_supplied_by_th
>  erion_map_headers
> 
> Eg
> 
>   code  tex-map
>       \cavedepth{300\thinspace{}ft}   %forcing reported depth to 300 ft
>   endcode
>  
>  
> 
>  
> 
>> I can see how  this could be a significant issue if you had a cave with
> little  vertical extent except for a high dome. You would have to shoot a
> shot  to a station at the top of the dome to capture it's vertical extent 
in
>  the legend data.
> 
> That would avoid the need to manually edit  the depth each time you 
suspected
> a new survey might change the depth  of the cave.  It would be my 
preferred
> method, even if it means  creating an artificial shot to replicate the 
'up'
> data.  It would  need 'flags duplicate' to prevent it being added to the
> reported  survey network length.
> 
>  
> 
> Bruce
>  
>  
> 
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