geoskill-地籍变化检测

内容来源:clawhub · 原始地址 · 查看安装指南

原始内容


name: cadastral-change-detection description: > 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.

Prerequisites / 先准备 X 文件

⚠️ 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

Cadastral Change Detection

Compares two epochs of cadastral parcels to detect object-level changes with topology awareness.

Trigger

Use when the user wants to:

  • Compare two epochs of parcel/cadastral data
  • Identify new/deleted/changed parcels
  • Detect split and merge events
  • Audit boundary adjustments
  • Generate change ledgers and topology issue reports

CLI Usage

# 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

Parameters

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

数据下载 (Data Download)

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.

Output

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

Change Types

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)

Exit Codes

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

Constraints

  • 几何容差按 CRS 单位配置,禁止在经纬度直接用米容差
  • 图匹配处理一对多/多对一并保存映射
  • 面积差区分几何精度误差与业务阈值
  • 敏感数据默认不联网、不上传