On Thu, Mar 08, 2012 at 11:35:18AM +0800, Vasily Vl. Suhachev wrote: > "infer plumbs on" not affected to vertical shot correction with loop > closure [snip] > infer plumbs on > > 1 2 10 0 0 > 2 3 10 - down > 3 4 10 0 0 > 4 5 20 150 0 > 5 6 10 - up
"*infer plumbs on" tells cavern to interpret gradients of +/- 90 degrees as UP/DOWN (so it will not apply the clino correction to them) That's from http://survex.com/docs/manual/datafile.htm, but the therion book says much the same. Your example has no such clino readings, so enabling this option will have no effect. Cheers, Olly