{
  "district_id": "f6-markaz",
  "bbox_wgs84": {
    "min_lat": 33.7274,
    "min_lon": 73.073,
    "max_lat": 33.732,
    "max_lon": 73.0798,
    "center_lat": 33.7297,
    "center_lon": 73.0764
  },
  "dimensions_m": [
    628.844,
    511.497
  ],
  "elevation_range_asl_m": [
    581.01,
    597.187
  ],
  "elevation_relief_m": 16.177,
  "data_sources_active": {
    "dem_elevation_meters": true,
    "esa_worldcover_10m": true,
    "meta_wri_canopy_1m": true,
    "openstreetmap_vectors": true,
    "overture_maps_buildings": true
  },
  "counts": {
    "total_buildings": 318,
    "osm_buildings": 35,
    "overture_added_buildings": 287,
    "overture_enriched_buildings": 0,
    "buildings_with_mapped_height": 2,
    "buildings_with_inferred_height": 316,
    "buildings_with_mapped_roof": 0,
    "buildings_with_inferred_roof": 318,
    "total_roads": 77,
    "total_road_length_m": 8711.253,
    "roads_with_mapped_width": 0,
    "roads_with_inferred_width": 77,
    "total_crossings": 4,
    "total_land_areas": 13,
    "parking_polygons": 3,
    "total_trees": 278,
    "total_green_zones": 28,
    "total_pois": 68,
    "total_street_furniture": 139
  },
  "building_provenance_breakdown": {
    "height:inferred_sector_typology": 316,
    "height:osm": 2,
    "material:inferred_default": 273,
    "material:osm": 2,
    "material:spatial_join_landuse_retail": 23,
    "material:spatial_join_poi": 20,
    "roof:inferred_mosque_typology": 1,
    "roof:inferred_regional_flat": 317
  },
  "road_provenance_breakdown": {
    "sidewalk:inferred_from_road_class": 77,
    "width:inferred_from_lanes_and_class": 77
  },
  "tree_source_breakdown": {
    "meta_wri_canopy_1m": 276,
    "osm_node": 2
  },
  "explicit_limitations_and_gaps": [
    "Of 318 total buildings, 2 carry direct OSM/Overture height data and 316 use conservative Islamabad CDA sector typology heights (explicitly flagged in provenance.inferred_fields).",
    "Of 318 buildings, 0 carry mapped roof:shape tags; the remaining 318 default to regional flat concrete roofs with parapets (tagged inferred_regional_flat).",
    "OSM in F-6 Markaz maps road centerlines rather than explicit kerb-to-kerb carriageways or separate footway=sidewalk ways; road widths and sidewalks are derived from highway class and lane tags where width=* is absent.",
    "Individual street trees are sparsely mapped as OSM nodes in Islamabad; tree positions and heights are supplemented from the Meta/WRI 1 m Global Canopy Height lidar/satellite model and tagged source=meta_wri_canopy_1m.",
    "Storefront facades use generic PBR architectural bays and spatially joined OSM POI fascia metadata rather than street-view photogrammetry."
  ]
}