[Therion] equate two (or more) fixed stations

[Olly Betts]

On Sun, Jan 01, 2012 at 01:50:35PM +1300, Bruce wrote:
> At first look it seems like this might be a desired response from Therion.
> How can two stations with specified and differing co-ordinates be 'equal'?
> 
> My assumption was that the standard errors give the actual position of the
> station a degree of uncertainty or 'fuzzyness', and that by equating two
> such stations they would be 'averaged out' in a similar way to loop closures
> or two fixed stations connected by a survey network.

That's how Survex handles this case.  It'll only give an error if you
omit the standard deviations (the "4 4 12" in this case) from both fixed
points and the coordinates aren't the same).

Cheers,
    Olly