{ "schemaVersion": 1, "attribution": "© OpenStreetMap contributors", "licence": "ODbL 1.0", "licenceURL": "https://opendatacommons.org/licenses/odbl/1-0/", "scope": "Complete named1883Building, actualtwo mappedpoolpolygons andsourcecontext; no surveyed photographicregistration.", "context": { "schemaVersion": 1, "id": "hkg-observatory-1883-main-building", "baseline": "60a82b0e", "source": { "path": "assets/owner-revision-20261021/hkg-observatory43/observatory-v1.png", "sha256": "0b2602490bc9739ac339757144524d398c91219df5fe1428ee9130ebb0eb42c9", "size": [ 1536, 1024 ], "bytes": 2155522, "alpha": true }, "generation": { "path": "assets/owner-revision-20261021/observatory-generation43.json", "sha256": "494a4623476ce79c06890d280c24e4573945718aed677eda07954a8f17badb72" }, "readiness": { "path": "assets/owner-revision-20261021/next-coverage43-b/readiness43.json", "sha256": "a69b02128909f58484d211cd0c37376631f2ff1cf1b50c92d8d4e772a4ae0fe8" }, "actualGeometry": { "path": "assets/owner-revision-20261021/next-coverage43-b/geometry43.json", "sha256": "517872f1dc991308eac7f7a2fd25a84bb8c66b9e82f9156309aba4e4e1f80c88" }, "geometryScope": "Complete named1883Building way692802873v3; separate north Annex and adjacent modern CentenaryBuilding excluded. Full closed15reference community outline, not survey. No estate/hill-height-to-axis transfer.", "anchor": { "lng": 114.17415827845603, "lat": 22.302165070763593 }, "coordinateSemantics": "Area centroid of complete named mainbuilding polygon, WGS84; illustrative named-component display reference, exact photographic groundfeet NULL.", "exactPhotographicFeet": null, "sourceOccupation": { "nativeSize": [ 1536, 1024 ], "alphaThreshold": 32, "wholeAlphaBBox": [ 7, 189, 1530, 832 ], "horizontalAlphaWidthPixels": 1523, "horizontalOccupiedFraction": 0.9915364583333334, "nativeOuterTransparentMarginsPixels": { "left": 7, "right": 6, "top": 189, "bottom": 192 }, "personallyWholeViewed": true, "observation": "Complete long two-storey mainbuilding, two verandas, visible short western return, restrained immediateplinth/paving. Very small but intact horizontal native margins; no crop/edit. Window/chimney/ornamental inventory and concealed rear are illustrative.", "lowerEnvelopeCount": 508, "lowerEnvelopeYRange": [ 0.72998046875, 0.81201171875 ], "sampleScope": "All originalalpha>=32 lowerenvelope columns retained atstep3. Sourcebase/apron extent annotations, not a surveyed foundation or sourceUV-to-geography certificate." }, "physicalReasoning": { "wholeCanvasWidthMetres": 50, "wholeCanvasHeightMetres": 33.333333333333336, "minimumWholeCanvasHeightMetresProposal": 33.333333333333336, "namedOutlineApproximateEastWestNorthSouthMetres": [ 36.08931401367895, 13.832667952076793 ], "nominalWholeWidthFromOutlineAndHorizontalAlphaOccupationMetres": 36.39736462574581, "rationale": "Full samebuilding community outline spans36.09m east-west and13.83m north-south. The complete generated mainbuilding nearly fills99.15%horizontal canvas; a purely literal36.09/0.9915 estimate would be about36.4m canvaswidth. We instead propose50m wholewidth, generous for the oblique shortreturn, modest plinth and imperfect painterly/perspective correspondence. Wholeheight33.333m follows exact native3:2aspect; it is NOT actualbuildingheight or hill elevation. No source/geographic fit has influenced this authored estimate.", "limits": "Approximate source-informed illustrative canvas, not metric reconstruction or surveyed plan. Horizontalalpha extent includes perspective/base; no exactfrontage/roof-pixel registration is asserted. Height/foreshortening remains illustrative; fixedsource/nativequality and actualcontact/floor/ground fit still need realproductionproof." }, "geography": { "parentId": "hkg-tsim-sha-tsui-clock-tower", "parentIndex": { "path": "lib/exploration/world-point-ground-index.json", "sha256": "2cc486c5096e2684875d0113b3c2b00b24ed698eeaa46f459b895e8b9757830a" }, "parentDescriptor": { "ringIds": [ "4", "15" ], "sourceSize": [ 1024, 1536 ], "suggestedPivot": [ 0.5, 0.93 ], "marginPixels": 0.75, "completeShoreline": true }, "reuse": "Existing genuine Eurasia4/15 only, retain own508samples; no borrowed contacts or newland/buffers. Actualhydration/containment/projection NOTRUN during rootGPUwindow.", "actualTypedPools": [ { "osmType": "way", "id": "136396189", "version": 2, "timestamp": "2021-06-06T03:05:26Z", "tags": { "access": "private", "leisure": "swimming_pool", "sport": "no" }, "closed": true, "nodeIds": [ "1496233868", "1496233785", "1496233898", "1496233833", "1496233853", "1496233825", "1496233771", "1496233812", "1496233894", "1496233821", "1496233777", "1496233773", "1496233838", "1496233875", "1496233790", "1496233893", "1496233769", "1496233766", "1496233778", "1496233868" ], "coordinates": [ [ 114.1750453, 22.3040751 ], [ 114.1750583, 22.3040826 ], [ 114.1750636, 22.304088 ], [ 114.1750707, 22.3041005 ], [ 114.1750726, 22.3041163 ], [ 114.1750686, 22.30413 ], [ 114.175062, 22.3041395 ], [ 114.1750502, 22.3041484 ], [ 114.1750357, 22.3041531 ], [ 114.1750228, 22.3041533 ], [ 114.1750082, 22.304149 ], [ 114.1749986, 22.3041427 ], [ 114.1749893, 22.3041314 ], [ 114.1749845, 22.3041124 ], [ 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"lon": "114.1750357" }, { "id": "1496233821", "visible": "true", "version": "2", "changeset": "139195559", "timestamp": "2023-07-30T05:15:53Z", "user": "Wright One", "uid": "261189", "lat": "22.3041533", "lon": "114.1750228" }, { "id": "1496233777", "visible": "true", "version": "2", "changeset": "139195559", "timestamp": "2023-07-30T05:15:53Z", "user": "Wright One", "uid": "261189", "lat": "22.3041490", "lon": "114.1750082" }, { "id": "1496233773", "visible": "true", "version": "2", "changeset": "139195559", "timestamp": "2023-07-30T05:15:53Z", "user": "Wright One", "uid": "261189", "lat": "22.3041427", "lon": "114.1749986" }, { "id": "1496233838", "visible": "true", "version": "2", "changeset": "139195559", "timestamp": "2023-07-30T05:15:53Z", "user": "Wright One", "uid": "261189", "lat": "22.3041314", "lon": "114.1749893" }, { "id": "1496233875", "visible": "true", "version": "2", "changeset": "139195559", "timestamp": "2023-07-30T05:15:53Z", "user": "Wright One", "uid": "261189", "lat": "22.3041124", "lon": "114.1749845" }, { "id": "1496233790", "visible": "true", "version": "2", "changeset": "139195559", "timestamp": "2023-07-30T05:15:53Z", "user": "Wright One", "uid": "261189", "lat": "22.3040985", "lon": "114.1749873" }, { "id": "1496233893", "visible": "true", "version": "2", "changeset": "139195559", "timestamp": "2023-07-30T05:15:53Z", "user": "Wright One", "uid": "261189", "lat": "22.3040855", "lon": "114.1749958" }, { "id": "1496233769", "visible": "true", "version": "2", "changeset": "139195559", "timestamp": "2023-07-30T05:15:53Z", "user": "Wright One", "uid": "261189", "lat": "22.3040768", "lon": "114.1750079" }, { "id": "1496233766", "visible": "true", "version": "2", "changeset": "139195559", "timestamp": "2023-07-30T05:15:53Z", "user": "Wright One", "uid": "261189", "lat": "22.3040724", "lon": "114.1750224" }, { "id": "1496233778", "visible": "true", "version": "2", "changeset": "139195559", "timestamp": "2023-07-30T05:15:53Z", "user": "Wright 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"coordinates": [ [ 114.1750633, 22.3041898 ], [ 114.1751603, 22.304249 ], [ 114.1752952, 22.3040595 ], [ 114.1751982, 22.3040004 ], [ 114.1750633, 22.3041898 ] ], "nodes": [ { "id": "1496233859", "visible": "true", "version": "2", "changeset": "139195559", "timestamp": "2023-07-30T05:15:53Z", "user": "Wright One", "uid": "261189", "lat": "22.3041898", "lon": "114.1750633" }, { "id": "1496233804", "visible": "true", "version": "2", "changeset": "139195559", "timestamp": "2023-07-30T05:15:53Z", "user": "Wright One", "uid": "261189", "lat": "22.3042490", "lon": "114.1751603" }, { "id": "1496233871", "visible": "true", "version": "2", "changeset": "139195559", "timestamp": "2023-07-30T05:15:53Z", "user": "Wright One", "uid": "261189", "lat": "22.3040595", "lon": "114.1752952" }, { "id": "1496233870", "visible": "true", "version": "2", "changeset": "139195559", "timestamp": "2023-07-30T05:15:53Z", "user": "Wright One", "uid": "261189", "lat": "22.3040004", "lon": "114.1751982" }, { "id": "1496233859", "visible": "true", "version": "2", "changeset": "139195559", "timestamp": "2023-07-30T05:15:53Z", "user": "Wright One", "uid": "261189", "lat": "22.3041898", "lon": "114.1750633" } ], "approximatePlanCentroid": { "lng": 114.17517924722105, "lat": 22.304124684894767 }, "axisAlignedExtentMetres": [ 23.85721755758415, 27.643096887893705 ], "areaSquareMetresForIdentityOnly": 301.497604363587, "minimumVertexToEdgeBuildingClearanceMetres": 216.76312884656014, "qualification": "Approximate local planar vertex-edge clearance for these disjoint polygons; community geometry, not surveyed or a certificate of all water." } ], "waterAudit": "All229ways/10relations in single bounded response checked for natural=water, waterway, landuse=reservoir/basin, leisure=swimming_pool, amenity=fountain. Exactly2closed swimming pools, no other matched water records. No untagged water completeness claim; no coastline included or asserted.", "waterLimits": "Both actual complete poolpolygons retained, nearest mainbuildingoutline clearance216.76m. This is raw sourcegeometry evidence, not finalcontact/ray clearance or proof of absent unmapped water. No coastline was fetched/closed/expanded." }, "modelChecks": { "status": "NOT_RUN_ROOT_NATIVE41_ACTIVE", "productionCPUProjection": false, "cameraFocusFit": false, "floorAndFade": false, "noNullSuppressionClaim": true }, "nativeAcceptance": false, "runtimeAllowed": false }, "geographicReadiness": { "schemaVersion": 1, "source": { "path": "assets/owner-revision-20261021/next-coverage43-b/references/hko-local-osm-map.xml", "sha256": "b15b4ca1aaaa53bccc03539d23404f2b316ddc1a8bc85336a6f651c49e61b0c2", "url": "https://api.openstreetmap.org/api/0.6/map?bbox=114.1730,22.3013,114.1760,22.3044", "licence": "OpenStreetMap contributors, ODbL1.0", "attributionURL": "https://www.openstreetmap.org/copyright" }, "mainBuilding": { "osmType": "way", "id": "692802873", "version": 3, "timestamp": "2023-03-22T14:30:13Z", "tags": { "building": "yes", "name": "一八八三大樓 1883 Building", "name:en": "1883 Building", "name:zh": "一八八三大樓", "name:zh-Hans": "一八八三大楼", "name:zh-Hant": "一八八三大樓" }, "closed": true, 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"visible": "true", "version": "1", "changeset": "133981205", "timestamp": "2023-03-22T14:30:13Z", "user": "user_18777023", "uid": "18777023", "lat": "22.3022280", "lon": "114.1741492" }, { "id": "6504304556", "visible": "true", "version": "2", "changeset": "74156080", "timestamp": "2019-09-06T04:07:06Z", "user": "jonathanchik", "uid": "10130685", "lat": "22.3022282", "lon": "114.1741966" }, { "id": "6504304544", "visible": "true", "version": "2", "changeset": "74156080", "timestamp": "2019-09-06T04:07:06Z", "user": "jonathanchik", "uid": "10130685", "lat": "22.3022287", "lon": "114.1743193" }, { "id": "6504304533", "visible": "true", "version": "2", "changeset": "74156080", "timestamp": "2019-09-06T04:07:06Z", "user": "jonathanchik", "uid": "10130685", "lat": "22.3021055", "lon": "114.1743199" } ], "approximatePlanCentroid": { "lng": 114.17415827845603, "lat": 22.302165070763593 }, "axisAlignedExtentMetres": [ 36.08931401367895, 13.832667952076793 ], "areaSquareMetresForIdentityOnly": 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