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Closure Adjustment

Distribute traverse misclosure to each leg by Compass (Bowditch) Rule (proportional to length) or Transit Rule (proportional to lat / dep) and report the relative precision 1:N.

Input

Results

Linear misclosure
Relative precision (1:N)
Per-leg lat correction (factor × L or |lat|)
Per-leg dep correction (factor × L or |dep|)
Method

Compass (Bowditch): correction_lat_i = −e_lat · (L_i / ΣL); correction_dep_i = −e_dep · (L_i / ΣL). Transit: correction_lat_i = −e_lat · (|lat_i| / Σ|lat|); correction_dep_i = −e_dep · (|dep_i| / Σ|dep|). Linear misclosure E = √(e_lat² + e_dep²); precision 1:N = ΣL / E.