Cropland Change Compliance
Detects and classifies cropland changes from multi-temporal NDVI rasters.
CLI Usage
python scripts/cropland_change_compliance.py --before-ndvi before.tif --after-ndvi after.tif
python scripts/cropland_change_compliance.py --before-ndvi b.tif --after-ndvi a.tif --ndvi-threshold 0.2
Output
| File | Description |
|---|---|
report.html |
Compliance report |
compliance-report.json |
Detailed results |
suspected_changes.geojson |
Suspected change findings |
output-manifest.json |
Machine-readable manifest |
Exit Codes
| Code | Meaning |
|---|---|
| 0 | Success |
| 2 | Argument error |
| 7 | Processing failure |
Parameters
| Flag | Type | Default | Required | Description |
|---|---|---|---|---|
--before-ndvi |
path | None | (yes unless --synthetic) |
Path to before-period NDVI raster (GeoTIFF) |
--after-ndvi |
path | None | (yes unless --synthetic) |
Path to after-period NDVI raster (GeoTIFF) |
--ndvi-threshold |
float | 0.15 | no | Minimum |
--rules |
path | None | no | Custom compliance rules JSON |
--synthetic |
flag | False | no | Run with synthetic demo data (no real inputs needed) |
--output-dir / -o |
path | compliance-output |
no | Output directory |
数据下载
本 skill 可自动从 Microsoft Planetary Computer 下载数据 (无需 API key):
python cropland_change_compliance.py --bbox 116,39,117,40 --date-range 2024-06-01,2024-06-30 --output-dir <tmp>
--bbox W,S,E,N: WGS-84 边界框 (西, 南, 东, 北)--date-range START,END: 日期范围 (YYYY-MM-DD,YYYY-MM-DD)--aoi-file <path.geojson>: 替代 --bbox 的 GeoJSON 多边形--cache-dir <path>: 缓存目录 (默认 ~/.geoskill_cache)
当用户只给 --bbox + --date-range (没有 --image) 时，skill 自动下载数据。
当用户给 --image 时，走原文件路径 (向后兼容)。