{
  "checked": "2026-10-04",
  "provider": "AreaCity / Amap and Tencent with DataV coverage fallback",
  "release": "https://github.com/xiangyuecn/AreaCity-JsSpider-StatsGov/releases/tag/2025.251231.260403",
  "license": "AreaCity: MIT; DataV: original provider terms",
  "datav": "https://geo.datav.aliyun.com/areas_v3/bound/",
  "coordinateSystem": "WGS84",
  "method": "Compare county codes with DataV. Reconcile AreaCity shared edges without simplification and clip to the retained city extent. Use DataV county geometry only for uncovered areas. Residual uncovered edge areas continue to select the parent city.",
  "cities": [
    {
      "city": 330100,
      "districts": 13,
      "functionalAreas": 0,
      "datavDistricts": 13,
      "matchingCodes": true,
      "uncoveredFraction": 0.00148614074757173,
      "reference": "DataV county boundaries and AreaCity 2025.251231.260403"
    },
    {
      "city": 320100,
      "districts": 11,
      "functionalAreas": 0,
      "datavDistricts": 11,
      "matchingCodes": true,
      "uncoveredFraction": 0.0028227939241382755,
      "reference": "DataV county boundaries and AreaCity 2025.251231.260403"
    },
    {
      "city": 320500,
      "districts": 9,
      "functionalAreas": 1,
      "datavDistricts": 9,
      "matchingCodes": true,
      "uncoveredFraction": 0.0009451349382584823,
      "reference": "DataV county boundaries and AreaCity 2025.251231.260403",
      "correction": "Suzhou Industrial Park is shown separately by current management. OSM relation 7363894 supplies its extent. Retain the old eastern Huqiu component and absorb detached Wuzhong and Gusu clipping remnants into the park, preserving the existing shared exterior edges.",
      "administration": "https://www.sipac.gov.cn/szgyyq/xzqh/parkProfile.shtml",
      "geometry": "https://www.openstreetmap.org/relation/7363894"
    },
    {
      "city": 440100,
      "districts": 11,
      "functionalAreas": 0,
      "datavDistricts": 11,
      "matchingCodes": true,
      "uncoveredFraction": 0.002641047550527406,
      "reference": "DataV county boundaries and AreaCity 2025.251231.260403"
    },
    {
      "city": 440300,
      "districts": 9,
      "functionalAreas": 0,
      "datavDistricts": 9,
      "matchingCodes": true,
      "uncoveredFraction": 0.004784480065364759,
      "reference": "DataV county boundaries and AreaCity 2025.251231.260403"
    }
  ],
  "sources": [
    {
      "file": "areacity-records.csv",
      "sha256": "3796ad5e93177352a6a552962aae80b8b1a74e17ccd73f643c470232e36a5540"
    },
    {
      "file": "datav-320100.json",
      "sha256": "14871d1526fb14cc967a33aa06df20f157ad7b0759b7d9281be377f2e1adac6d"
    },
    {
      "file": "datav-320500.json",
      "sha256": "37dddced21487e8983b1f3e8ce2ad6fe116dbe4cd938952b4aec02d355939955"
    },
    {
      "file": "datav-330100.json",
      "sha256": "1bfa48db925fb3e91450e860331151e85b49e3113822b5cabc60a799bb04c903"
    },
    {
      "file": "datav-440100.json",
      "sha256": "c2793000c61b805e1435f5c7282317531ce8a06ac02d9e9a7bb5f1f891522b97"
    },
    {
      "file": "datav-440300.json",
      "sha256": "e346a6cb0d5c482bf52fd0b845d0cda8c03a6ab666ce310afd3292a4d1899fa8"
    },
    {
      "file": "suzhou-industrial-park.geojson",
      "sha256": "f4cfb1018180d51a676ca1f3c1e6a66de8affd48b417cb2b2a6c48d8c9b74f6c"
    },
    {
      "file": "wikidata-names.json",
      "sha256": "a3062b3dd9ab32a3b3a9e35a17cec50d8ff35acd2181c6198296984aa4cb6988"
    },
    {
      "file": "wikipedia-sitelinks.json",
      "sha256": "acf46a4e4278b80ed11d66a631bf3c7996d7312887e5a27c52911e5dfe782473"
    }
  ],
  "shenzhenCoast": {
    "source": "data/shenzhen-coast-source.json",
    "method": "Only Shenzhen display coverage is clipped to detailed OpenStreetMap land; the Guangdong outline and shared line networks are derived from those polygons. Original administrative sources and Hong Kong polygons remain unchanged. This depicts physical land rather than offshore jurisdiction. Mean high-water coastline may differ from imagery tides and dates."
  },
  "shenzhenHongKong": {
    "report": "data/shenzhen-hongkong-border.json",
    "method": "Copy the official Hong Kong land-border path between existing common junctions into Shenzhen. Project adjoining exterior district vertices onto the same path and retain all intervening official coordinates. Connected internal district junctions move with their exterior endpoint; coastlines and inland segments outside the reviewed seam retain their coordinates."
  },
  "guangzhouCoast": {
    "source": "data/pearl-coast-source.json",
    "report": "data/pearl-coast-report.json",
    "method": "Retain original directed OpenStreetMap coastline vertices. Project only exterior mainland coast segments within 2.5 km; shared administrative edges and junctions remain fixed. Clip physical land and replace entire islands where existing jurisdiction or an unambiguous national catalogue match establishes ownership. Catalogue coordinates have 0.1 arcminute precision; a rounding cell is accepted only when it intersects one physical island. Retain partitions on islands shared by jurisdictions. Hengqin uses the physical land mask minus unchanged Macau government jurisdictions; the reviewed port island uses its existing physical shoreline. No rectangular coastal preservation window is applied. Apply the same parent extent to Guangzhou districts; only Nansha coastal additions are filled."
  }
}