{
  "version": "v0.1-2026-10-31",
  "campus": "Case Western Reserve University \u00b7 University Circle context",
  "retrieved": "2026-10-31",
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  "source": {
    "name": "OpenStreetMap contributors",
    "url": "https://api.openstreetmap.org/api/0.6/map",
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    "sha256": "a5d73dec71cb6721770229cafab008b5fddbd9a163130e75e2e143b280793f94",
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    "attribution": "\u00a9 OpenStreetMap contributors",
    "license": "Open Database License (ODbL) 1.0",
    "licenseUrl": "https://www.openstreetmap.org/copyright"
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  "projection": "Local equirectangular, spherical radius 6371008.8 m; x east, z south. Approximate local geography, not survey-grade coordinates.",
  "counts": {
    "buildings": 1068,
    "surfaces": 20154,
    "trees": 3916,
    "routes": 2145,
    "entrances": 431,
    "roads": 1039
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  "limitations": [
    "Flat terrain; no terrain survey.",
    "Footprints and path centre lines are OSM volunteer mapping, not university-certified as-built records.",
    "Height tags are unverified; missing heights use tagged floor count \u00d7 3.5 m or an explicitly labeled illustrative fallback.",
    "Road/path paving is buffered from actual source centre lines; widths default to representative values when absent.",
    "Only source trees are included; missing tree heights default to 9 m.",
    "Route topology preserves source vertices and excludes explicit no/private/indoor paths. Unknown access is not verified physical permission.",
    "Paths outside the extent are trimmed at source vertices. No disjoint route components are joined.",
    "Names identify buildings, not current occupancy. No people, emails, or residential room assignments are collected."
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  "anchors": {
    "count": 18,
    "method": "Minimum-area oriented source-footprint rectangles; face orientation follows mapped entrance when available, otherwise nearest source pedestrian vertex.",
    "limitations": "Footprint bounds are not literal architectural rectangles. Interpreted virtual entrances are explicitly labeled per anchor."
  }
}