[Therion] How to create KML files

[Bill Gee]

Thanks Olly, Henry and Adam -

This was enough information for me to get a KML file out of Therion.  I sent it 
off to someone else to verify that it lands in about the right place.  Google 
Earth has a Linux version, but it is badly supported and very buggy.  

Now that I know the secret incantation, I can change to UTM if needed.  The 
cave in question is probably in zone 15.  The border between zone 14 and 15 
runs right down the middle of Missouri which causes us no end of difficulty.  
The readings for this cave were not done by me.

And one point to verify ...  Therion DOES require elevation.  I tried it 
without and it complained.

Regards - Bill Gee



On Sunday, March 22, 2015 23:14:44 Olly Betts wrote:
> On Sun, Mar 22, 2015 at 10:04:42PM -0000, Henry Bennett wrote:
> > Bill Gee writes:
> > > "therion: warning -- data not georeferenced -- unable to export KML
> > > file"
> > > 
> > > I think this is because I have not included latitude/longitude
> > > information.
> > > 
> > > My question is ...  How is latitude and longitude specified?
> > > 
> > > Reading through the Therion book, it seems it is done in the "cs"
> > > statement
> > > within the centerline.  However, the syntax is not clear.   Are there
> > > any
> > > examples that show how it is done?
> > 
> > Use Fix
> > 
> > http://therion.speleo.sk/wiki/doku.php/tbe:wiki2?s[]=fix&s[]=entrance
> 
> You need to both specify a coordinate system with "cs" *and* use "fix"
> to locate at least one station in that coordinate system, e.g.:
> 
> cs long-lat
> fix entrance -77.0365 38.8977 30
> 
> That assumes datum WGS84 (which is what your GPS probably gives you by
> default).
> 
> You can't use lat/long as the output coordinate system, as that needs to
> use length units.  I don't know off-hand if therion picks a suitable
> one for you - if not, you'll need to specify a suitable output
> coordinate system in your config file - e.g. 'cs utm<NN>' where <NN> is
> the UTM zone you are in.
> 
> Cheers,
>     Olly
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