What needs to be clarified
Review contour geometry, coordinate order and area method, separating calculation errors from documented boundary changes.
Materials to prepare
- Original point list with reference system, units and IDs
- Calculation file, import settings and software version
- Documented boundary sequence and any inner contours
What to compare
Check values and axis order against sources. Reconstruct vertices and closure; detect duplicates and self-crossings. Separate outer and inner rings and verify computational model and transformations. Recalculate in a justified system, retaining intermediate data; assess rounding separately from changed coordinates or vertices.
Possible outcome of the analysis
A reproducible calculation and discrepancy table may distinguish data, import and computation effects with stated accuracy, without determining land rights.
Limits of the conclusions
Correct arithmetic cannot verify source coordinates. Equal areas do not establish identical boundaries; desk calculation cannot locate the fence on site.