[Therion] Surface profile in elevation maps

[Bruce]

Steve
I'll be interested to see if anyone has managed to create a ground line as
you describe.  I assume it is not possible to make it a boundary for the
background colour.

I have just tried taking a 3d gps trail with 2m resolution and then
including it as a survey line and this can be included to give context in
Loch, Aven and pdf outputs.  Not sure how well it would work with extended
elevations though - I have only tried it with projected elevations.
It adds interesting context to plans and elevations, but best with a white
background in elevations.

It is quick to produce, but seems a little clunky. If anyone has a better
way to include gps trails in therion data I would like to learn of it.

Some snippets below to show what I mean.
Bruce

   centreline 
   cs lat-long
   grade BCRA3
   
   walls off # 3D model auto = only use LRUD if no scrap available # on off
   mark temporary   
   flags surface #do fixed stations inherit shot flags?
   # station-names 4wd01 [] # to avoid name clashes if required
   
fix 	1	-42.0001724	    171.9024155	572.6
fix 	2	-42.00020492	171.9022789	574.04
fix 	3	-42.00021414	171.9021513	574.04
fix 	4	-42.00026879	171.9020413	575.01
fix 	5	-42.00030752	171.901925	575.01
#thousands of these, they are decimal degrees and metres

data nosurvey from to
1	2
2	3
3	4
4	5
5	6
6	7
#thousands of these as well, a spreadsheet makes them easy to generate

#Then just select this survey along with your cave when processing