The correct way to average bearings is to the treat them as vectors, then average the x and y components separately before converting the resulting vector back to a bearing. It is likely this is what the trig functions mentioned in this thread are doing.
Footleg On Fri, 18 May 2018 at 12:57, Bruce Mutton via Therion <therion@speleo.sk> wrote: > I agree to some extent with both sentiments below, however the software > should not abort just because of backsight discrepancies. > > What about adding one more line to the Therion and or Survex log file; > either > > “There are no backsights in the centreline”, or > > “Maximum backsight discrepancy is xx [degrees|grads]”, as approprite > > That way the user can be fully informed and make their own decision about > whether to investigate further if the information is not what they expect. > > Bruce > > > > 17. 5. 2018 v 9:25, Evaristo Quiroga via Therion <therion@speleo.sk>: > > > > In this case is not a problem with my formula, is a serious magnetic > anomaly (100 degrees difference) and the program should to stop and to > send a warning. > > > > Evaristo, > > > > Therion is a program to interprete your data, not to solve problems with > your data. > > > > It is your responsibility what the data you import into Therion. > > > > Martin S. > _______________________________________________ > Therion mailing list > Therion@speleo.sk > https://mailman.speleo.sk/listinfo/therion >
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