[Therion] Detecting errors

[Olly Betts]

On Fri, Aug 16, 2019 at 02:23:20PM +1200, Bruce Mutton wrote:
> I'm a Therion user (not Survex), although I use survex loop closure.
> That gives some additional statistics in the Therion log file, but not
> the loop error standard deviations.  I wonder if Therion (or Cavern)
> could incorporate these in the log file, or if Aven could be made to
> list them?

Cavern already produces such a file - that's exactly what the .err file
I'm referring to here tells you:

> > 76.brave.18 - 76.brave.17 - 76.brave.16 - 76.brave.15 - 76.brave.14 - 76.brave.13 - 76.brave.12 - 76.brave.11 - 76.brave.10
> > Original length  32.35m (  8 legs), moved   1.26m ( 0.16m/leg). Error   3.90%
> > 4.920289
> > H: 5.888476 V: 0.864600

I'm not sure what happens to that file when therion calls cavern to
process data though.  I keep my survey data in .svx files and process
as a separate step, then point therion at the .3d file.

Cheers,
    Olly