[Therion] weight on distorsion depending on survey

[Martin Sluka]

Check Survex documentation. The principe is the same. 

M.s. 

Odesláno z iPhonu

15. 2. 2017 v 8:04, Ben Cooper via Therion <therion at speleo.sk>:

> Hi Phil,
> Yes, you can do that by setting the standard deviation for the survey as a whole, and then for each leg that requires it.
> 
> From the Therion book:
> 
> sd <quantity list> <value> <units> ◃ sets the standard deviation for the given
> measurements. The Quantity list can contain the following keywords: length, tape,
> bearing, compass, gradient, clino, counter, depth, x, y, z, position, easting, dx, northing,
> dy, altitude, dz.
> 
> The sd command affects all following legs, so for a single leg, remember to set the sd back to your default again, eg:-
> sd compass 5 degrees
> sd clino 2 degree
> 1 2 209 10.88 -4
> sd compass clino 0.5 degrees
> 
> A small difference in SD makes a big difference in the distribution of error, so suggest experiment with different values.
> Best regards,
> Ben
> 
> -----Original Message-----
> From: Therion [mailto:therion-bounces at speleo.sk] On Behalf Of Philippe Vernant via Therion
> Sent: 14 February 2017 23:34
> To: List for Therion users
> Cc: Philippe Vernant
> Subject: [Therion] weight on distorsion depending on survey
> 
> Hi guys,
> 
> Could not find the answer, so popping up to ask you the question. Is there a way to say that one survey should bear most on the distorsion ? I have a diving survey which is less accurate than the “regular” surveys, can I put some weight on that survey so it will be more distorted ?
> 
> Thanks,
> Phil
> 
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