Hi Dan,

first of all you have to make the decision to use either local or global reference system. You can not mix them.

As you are planning to use GIS data I would recommend to use global coordinate systems. The advantages are:
- you can mix coordinates in different coordinate systems
- you can choose the output coordinate system in therion
- therion can calculate the magnetic declination (if you specify the date whem the readings were done)

What you need to do is:
- you need a rectangular coordinate system (ie UTM,...) (not good is for instance lat-long)

- in your measurement data you have to specify the coordinate system (command "cs"):
survey Fahrstuhlschachthoehle
    centreline
    date 2009.11.07
     cs UTM33
      fix 2.20 0275873 5287674 1833
      ...

- you have also to specify the coordinate system in your surface definition:
surface # Deklaration des Geländemodells
# coordinate system
cs EPSG:31468
grid 4500500 5284700 10 10 100 100 # grid x_Minimum y_Minimum x_res y_res n_col n_row
# calibrated surface texture
bitmap ./dop.jpg [0 0 4500500 5284700 5000 5000 4501500 5285700]
#
# Height matrix
1255.32    1259.45    1262.32
...

you can also find some more information on how to build 3D models here:
http://therion.speleo.sk/wiki/doku.php?id=ifl

Best regards
Wolfgang

PS: you can also use "cs" in your thconfig file (in case to produce output in different coordinate systems)

Am 16.09.2010 13:16, schrieb dan hedger:

Thanks for the input, I'll start with gdalwarp and go from there....looks like ive got some work ahead of me...

On Thu, Sep 16, 2010 at 3:19 AM, Martin Sluka <martinsluka@mac.com> wrote:

On 16.9.2010, at 7:07, Bruce wrote:

After 3 years I am still
having new insights and have no idea if I am doing it well.

Bruce, when authors of Therion created it nobody nor MartinB and Stacho could imagine what they did. Therion means in ancient Greek something as big wild beast and they did not suspect what they runned out. ;o)

The users as you just explore another unexplored parts of therion's den for rest of us. Thanks!

m.

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