记忆
Topology-aware cadastral parcel change detection between two epochs. Identifies new, deleted, expanded, reduced, split, and merged parcels from cadastral vector data (宗地/地块/调查图斑). Use when comparing two epochs of land parcels, auditing boundary changes, or generating cadastral change ledgers.
Topology-aware cadastral parcel change detection between two epochs. Identifies new, deleted, expanded, reduced, split, and merged parcels from cadastral vector data (宗地/地块/调查图斑). Use when comparing two epochs of land parcels, auditing boundary changes, or generating cadastral change ledgers.
⚠️ 必读 — 本 skill 不属于即用型，需要先准备特定文件才能跑。
本 skill 需要 两期宗地矢量（GeoJSON / Shapefile），来自地方不动产登记。
👉 完整教程见仓库根目录 PREREQUISITES.md 2.1 节。
先准备 X 文件：references/sample_before.geojson + references/sample_after.geojson 试跑，再换成真实宗地。
快速试跑命令：
python cadastral_change_detection.py --before references/sample_before.geojson --after references/sample_after.geojson --output-dir ./test
Compares two epochs of cadastral parcels to detect object-level changes with topology awareness.
Use when the user wants to:
# Basic comparison
python scripts/cadastral_change_detection.py \
--before before.geojson \
--after after.geojson
# With custom parameters
python scripts/cadastral_change_detection.py \
--before before.geojson \
--after after.geojson \
--id-field ZDBM \
--field-map field_map.json \
--tolerance 0.3 \
--area-threshold 0.1 \
--match-iou 0.1 \
--output-dir ./ccd-output
# Dry run (validate only)
python scripts/cadastral_change_detection.py \
--before before.geojson \
--after after.geojson \
--dry-run
| Parameter | Default | Description |
|---|---|---|
--before | required | 前期宗地数据 (GeoJSON/Shapefile) |
--after | required | 后期宗地数据 (GeoJSON/Shapefile) |
--id-field | auto | 宗地唯一标识字段名 |
--field-map | None | 字段映射 JSON (前期字段→后期字段) |
--tolerance | 0.0 | 几何容差 (CRS 单位) |
--area-threshold | 0.05 | 面积变化阈值比例 |
--match-iou | 0.1 | IoU 匹配阈值 |
--rules | None | 业务规则 JSON 文件路径 |
--output-dir | ./cadastral-change-output | 输出目录 |
--dry-run | False | 仅验证参数 |
--bbox | None | (reserved) standard flag, has no effect on this skill |
--date-range | None | (reserved) standard flag, has no effect on this skill |
--aoi-file | None | (reserved) standard flag, has no effect on this skill |
This skill does not auto-download cadastral data. Cadastral /
land-parcel datasets are jurisdiction-specific and not available from
open archives. The user must supply two epochs of vector data
(--before and --after).
The --bbox, --date-range, and --aoi-file flags are still
registered (for CLI consistency with the other 49 GeoSkills) but
have no effect on the analysis. Supplying --bbox without
--before/--after raises a clear error.
| File | Description |
|---|---|
parcel_changes.geojson | 变更宗地图层（含变更类型与指标） |
change_ledger.xlsx | 变更台账（Excel 汇总表） |
topology_issues.geojson | 拓扑问题图层（重叠/缝隙） |
field_changes.csv | 属性字段变更记录 |
audit_report.pdf | 审核报告（HTML 格式） |
request.json | 请求参数记录 |
dataset-manifest.json | 数据集清单 |
output-manifest.json | 输出清单 |
qa.json | 质量检查结果 |
run.log | 运行日志 |
| Type | Meaning |
|---|---|
new | 新增宗地（仅后期存在） |
deleted | 删除宗地（仅前期存在） |
expanded | 面积扩大（超阈值） |
reduced | 面积缩小（超阈值） |
unchanged | 未变化（面积在容差内） |
split | 分割（1前期→N后期） |
merge | 合并（N前期→1后期） |
boundary_adjust | 边界调整（面积不变但边界位移） |
| Code | Meaning |
|---|---|
| 0 | 成功 |
| 2 | 参数错误 |
| 3 | 依赖缺失 |
| 6 | 数据校验失败 |
| 7 | 处理失败 |
Object-level building change detection between two epochs. Identifies new, demolished, expanded, reduced, split, and merged buildings from footprint vectors. Use when comparing two building datasets, auditing construction changes, or generating building change reports.
对矢量数据做变更检测、版本快照与差异比较，支持 commit / diff / log 操作。Change detection, version snapshots and diff comparison for vector data with commit / diff / log operations.
Detect and classify cropland changes from before/after NDVI rasters. Identifies suspected construction, water, forest, and bare soil changes and generates compliance investigation materials. Use when the user wants to check farmland for unauthorized changes, monitor cropland conversion, or generate compliance reports.
Find or verify parcel vertex coordinates on the Cote d'Ivoire Mining Cadastre Map Portal/Landfolio site. Use when a user gives an official parcel or license code and asks for vertices, boundary coordinates, WGS84/DMS coordinates, decimal latitude/longitude, Esri geometry, or a repeatable workflow.
Delineate urban growth boundaries from historical expansion rate and direction plus terrain, cropland and ecological constraints.
Multi-temporal shoreline change rate analysis. Generates transects, computes Endpoint Rate (EPR) and Linear Regression Rate (LRR), and identifies erosion hotspots. Use when monitoring coastline retreat/accretion or identifying erosion-prone segments.