Compute parcel boundary, area and ownership data for cadastral surveying.
矩形宗地是最常见地块形状,面积=长×宽,周长与对角线可由勾股定理求得;结果按 1 亩≈666.67 m² 换算为亩,便于和征地、确权口径对照。
| Item | Formula / Note | Source / Standard |
|---|---|---|
| Area from boundary point coordinates | A = 0.5 · | sum (x_i · y_(i+1) - x_(i+1) · y_i) | | GB 50026-2020, Code for engineering surveying |
| Area by triangle division | Divide the parcel into triangles and sum Heron's formula results | GB 50026-2020, Code for engineering surveying |
| Cadastral survey requirement | A cadastral survey must reconcile boundary points, area and ownership records | TD/T 1001-2012, Code of cadastral survey |
| Area units | Square metres are the base unit; 1 mu ≈ 666.667 m² | ISO 80000-1:2009, Quantities and units - Part 1: General |
地籍(界址/面积/权属)调查。免费在线工具,纯前端处理,数据不上传,保护隐私安全。