F.01
Misclosure
Latitude / departure closure error, linear misclosure and relative precision (1:N).
Compute and rigorously adjust a closed-loop survey traverse. Enter your fixed control, the measured bearings and distances around the loop, and the tool computes the linear misclosure, runs a parametric least-squares adjustment, and returns adjusted station coordinates with full residual statistics.
Latitude / departure closure error, linear misclosure and relative precision (1:N).
Weighted parametric Gauss-Newton solution with full cofactor matrix and σ₀ statistics.
95% confidence ellipses per station, plotted and tabulated — true positional precision.
Baarda data snooping & global χ² test pinpoint the bad observation automatically.
Plotted network, printable report, and CSV export of coordinates, ellipses & residuals.
Free, key-less AI: parse messy field notes into the table and get a plain-English diagnosis.
| # | From | To station | Bearing θ (deg or D-M-S) | Distance L (m) |
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| Station | Type | Easting (m) | Northing (m) | Shift dE (mm) | Shift dN (mm) |
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| Station | Semi-major a (mm) | Semi-minor b (mm) | Orientation θ | Max point error (mm) |
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| Leg | Dist obs (m) | v dist (mm) | w̄ dist | Brg obs | v brg (″) | w̄ brg |
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