---

name: construction-progress-monitor description: > Monitor construction progress from multi-temporal satellite imagery. Classifies project stages (clearing, earthwork, foundation, structure, finishing, completed) using spectral indices and detects stagnation. Use when tracking infrastructure projects, auditing construction timelines, or generating progress reports from remote sensing data.

Construction Progress Monitor

Monitors construction site evolution from multi-temporal imagery using spectral indices and a state machine to classify project stages.

Trigger

Use when the user wants to:

• Track construction progress from satellite imagery
• Classify project stages (clearing → earthwork → foundation → structure → finishing → completed)
• Detect stagnant projects (no change for N periods)
• Generate progress reports for infrastructure projects
• Audit construction timelines against planned schedules

CLI Usage

# Basic monitoring with project boundaries and schedule
python scripts/construction_progress_monitor.py \
  --projects projects.geojson \
  --schedule schedule.csv \
  --monitor-period 2024-01,2024-04,2024-07,2024-10

# With custom stage schema and stagnation threshold
python scripts/construction_progress_monitor.py \
  --projects projects.geojson \
  --schedule schedule.csv \
  --monitor-period 2024-01,2024-04,2024-07,2024-10 \
  --stage-schema stages.json \
  --stagnation-periods 2 \
  --imagery-source sentinel2

# Specify output directory
python scripts/construction_progress_monitor.py \
  --projects projects.geojson \
  --schedule schedule.csv \
  --monitor-period 2024-01,2024-04 \
  --output-dir ./cpm-output

Parameters

Parameter	Default	Description
--projects	required	Project boundaries with IDs (GeoJSON)
--schedule	required	Planned schedule CSV (project_id, node, date)
--monitor-period	required	Comma-separated monitoring dates (YYYY-MM)
--stage-schema	built-in	Custom stage definition JSON
--imagery-source	sentinel2	Imagery source identifier
--stagnation-periods	2	Periods of no change to flag stagnation
--output-dir	./cpm-output	Output directory

Output

File	Description
project_status.geojson	Per-project current stage and metrics
progress_timeseries.csv	Stage timeline per project
stage_map.tif	Raster stage classification map
exceptions.xlsx	Stagnation and anomaly report

Construction Stages

Stage	Code	Key Indicators
clearing	0	High bare soil, low NDVI, low NDBI
earthwork	1	Dominant bare soil, minimal vegetation
foundation	2	Mixed bare soil and built material
structure	3	High NDBI, low NDVI, built materials
finishing	4	Moderate NDBI, increasing NDVI
completed	5	Low NDBI, high NDVI, stable

Exit Codes

Code	Meaning
0	Success
2	Argument error
3	Dependency missing
6	Data validation failure
7	Processing failure

数据下载

本 skill 可自动从 Microsoft Planetary Computer 下载数据 (无需 API key):

python construction_progress_monitor.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)。