[Therion] How to combine two maps

[Ladislav Blažek]

Hi Bill,

Three times yes.

But everything depends on your data/file structure.

For every cave I have one top level index file including all surveys and containing maps. When I want to merge related caves I would just create one upper level index th file including index files of relevant caves and define joins using equate commands.

For caves without direct connection you can define fix points.

\Ladislav

16. 2. 2018 v 20:19, Bill Gee via Therion <therion at speleo.sk>:

> Hello everyone -
> 
> I am sure someone has come across this problem.  I looked all through the 
> Therion Book and the online Wiki, but did not find anything that looked 
> useful.
> 
> We've been surveying a cave for several years now.  It is a tough cave.  The 
> map is now a bit over 10,700 feet (3,261 meters).  There are several nearby 
> caves that have been getting mapped as time permits.  They have been treated 
> as separate projects, each with their own map.
> 
> Last weekend a human-passable connection was discovered between the big cave 
> and one of the nearby caves.  It is only for small humans, but it has been 
> traversed.  The centerline survey should be done the next time we go out 
> there.  It will only take a few more stations to survey the connection.
> 
> First question:  Is there a way to combine the two maps so that Therion treats 
> them as a single map?  I don't want to have to redraw over 300 meters of cave!  
> I suppose I could simply add the th2 files of one cave to the other.  Is that 
> the usual method?
> 
> Second question:  We have GPS coordinates of the two entrances.  Is it 
> possible to specify both sets in the centerline data?
> 
> Third question:  As I said, there are several smaller caves nearby.  It would 
> be useful to have them all displayed on the same printout.  Is there a way to 
> tell Therion to import a map and place it on the drawing using GPS coordinates 
> to maintain scale distance?
> 
> Thanks!
> 
> -- 
> Bill Gee
> 
> 
> 
> 
> _______________________________________________
> Therion mailing list
> Therion at speleo.sk
> https://mailman.speleo.sk/listinfo/therion