[Therion] Survex use 0/180° not +90/-90

[Olly Betts]

On Tue, Dec 11, 2012 at 09:41:52PM +0100, cawa sorix wrote:
> I had an issue today on data with Vulcain topofil data.
> On Vulcain topofil the clino is from 0 to 180° and
> 0 =  +90
> 90 = 0
> 180 = -90
> 
> I didn't find anything on survex documentation about that.
> Do you have any idea about the right setup for the survex line ?

In Survex you would say that a reading of 90 means zero and that the
scale reads with increasing numbers downwards like so:

*calibrate clino 90 -1

Currently cavern will warn for readings above 90 - this should be
addressed in the next release, but meanwhile you can ignore such
warnings - they don't indicate a real problem in the data.

Cheers,
    Olly