{
  "_schema": "ISO 19115:2003 Geographic Information — Metadata (simplified JSON representation)",
  "fileIdentifier": "ymmap-archive-2026-02-08",
  "language": "zho",
  "characterSet": "utf8",
  "hierarchyLevel": "dataset",
  "contact": {
    "organisationName": "NQSD Project, National Yang Ming Chiao Tung University",
    "role": "pointOfContact"
  },
  "dateStamp": "2026-02-08",
  "metadataStandardName": "ISO 19115:2003/19139",
  "metadataStandardVersion": "1.0",
  "identificationInfo": {
    "citation": {
      "title": "NYCU Yang-Ming Campus Interactive Map GIS System — Complete Public Data Archive",
      "date": "2026-02-08",
      "dateType": "creation",
      "identifier": "ymmap-archive-2026-02-08"
    },
    "abstract": "Complete archive of publicly accessible geospatial data from the NYCU Yang-Ming Campus Interactive Map GIS system. Contains building footprints, room boundaries with floor-level detail, infrastructure points of interest (AED, elevators, parking, emergency phones, etc.), campus walkways, bus routes, historical land parcels, floor plan images, building photos, and POI photos. Data collected from Spring MVC REST API and GeoServer OGC services (WFS/WMS/WCS).",
    "purpose": "Digital preservation of campus geospatial data for academic research, facility management, and historical record. The original system frontend was decommissioned (DNS removed) while backend remained operational.",
    "status": "completed",
    "pointOfContact": {
      "organisationName": "National Yang Ming Chiao Tung University",
      "role": "owner"
    },
    "resourceMaintenance": {
      "maintenanceAndUpdateFrequency": "notPlanned",
      "maintenanceNote": "One-time archival extraction. Source system may become unavailable."
    },
    "descriptiveKeywords": [
      {
        "keyword": ["Campus GIS", "Building Information", "Floor Plans", "Facility Management", "Room Inventory", "Accessibility"],
        "type": "theme"
      },
      {
        "keyword": ["Yang-Ming Campus", "Taipei", "Taiwan", "Beitou District"],
        "type": "place"
      },
      {
        "keyword": ["2019-2026"],
        "type": "temporal"
      }
    ],
    "spatialRepresentationType": "vector",
    "language": ["zho", "eng"],
    "characterSet": "utf8",
    "topicCategory": ["planningCadastre", "structure", "transportation", "health"],
    "extent": {
      "geographicElement": {
        "westBoundLongitude": 121.505,
        "eastBoundLongitude": 121.535,
        "southBoundLatitude": 25.115,
        "northBoundLatitude": 25.140,
        "description": "NYCU Yang-Ming Campus and surrounding areas, Beitou District, Taipei City, Taiwan"
      },
      "temporalElement": {
        "beginPosition": "1993-01",
        "endPosition": "2026-02-08",
        "description": "Land parcel data from 1993; building/room data reflects 2019-2026 system state"
      }
    }
  },
  "referenceSystemInfo": [
    {
      "code": "EPSG:3826",
      "codeSpace": "EPSG",
      "description": "TWD97 / TM2 Zone 121 — Native storage CRS"
    },
    {
      "code": "EPSG:4326",
      "codeSpace": "EPSG",
      "description": "WGS 84 — Export CRS for GeoJSON outputs"
    }
  ],
  "distributionInfo": {
    "distributionFormat": [
      {"name": "GeoJSON", "version": "RFC 7946"},
      {"name": "CSV", "version": "RFC 4180", "note": "With WKT geometry column"},
      {"name": "PNG", "version": "ISO/IEC 15948", "note": "Floor plans and map tiles"},
      {"name": "JPEG", "version": "ISO/IEC 10918", "note": "Building and POI photos"},
      {"name": "GML", "version": "3.2", "note": "OGC Geography Markup Language"},
      {"name": "KML", "version": "2.2", "note": "OGC KML for Google Earth"},
      {"name": "Shapefile", "version": "ESRI", "note": "Available via WFS SHAPE-ZIP"},
      {"name": "PDF", "version": "1.7", "note": "WMS map exports"},
      {"name": "SVG", "version": "1.1", "note": "WMS vector map exports"},
      {"name": "GeoTIFF", "version": "1.0", "note": "Georeferenced raster exports"}
    ],
    "transferOptions": {
      "onLine": {
        "linkage": "https://ymspace.ga.nycu.edu.tw:8080/geoserver/ows",
        "protocol": "OGC:WFS",
        "description": "GeoServer WFS endpoint (may become unavailable)",
        "function": "download"
      }
    }
  },
  "dataQualityInfo": {
    "scope": "dataset",
    "lineage": {
      "statement": "Data extracted from NYCU Yang-Ming Campus GIS system (ymspace.ga.nycu.edu.tw) on 2026-02-08 using custom Python scripts. API data collected via Spring MVC REST endpoints. Geospatial data collected via GeoServer WFS GetFeature and WMS GetMap. Building photos collected via file management API (ID range 37000-39200). Frontend source recovered from Wayback Machine. No lossy transformations applied; all data saved as received.",
      "processStep": [
        {"description": "Endpoint discovery and API enumeration (scripts/09_probe_ymspace.py)"},
        {"description": "Building and room metadata download (scripts/10_download_buildings.py)"},
        {"description": "GIS infrastructure layer download via WFS (scripts/11_download_gis_layers.py)"},
        {"description": "Building photo download (scripts/12_download_building_photos.py)"},
        {"description": "Deep probe for bilingual room data (scripts/13_deep_probe_v2.py)"},
        {"description": "WFS room boundary download (scripts/14_download_wfs_rooms.py)"},
        {"description": "WMS floor plan rendering (scripts/15_download_wms_floorplans.py)"},
        {"description": "Room keyword search (scripts/16_search_rooms.py)"},
        {"description": "Route controller data extraction (scripts/17_extract_route_data.py)"},
        {"description": "WFS CQL queries for full property sets (scripts/18_wfs_cql_queries.py)"},
        {"description": "GeoServer layer completeness audit (scripts/19_audit_layers.py)"},
        {"description": "Multi-format export (scripts/20_download_extra_formats.py)"},
        {"description": "Wayback Machine source recovery (scripts/21_wayback_recovery.py)"},
        {"description": "Report generation (scripts/22_generate_reports.py)"}
      ]
    },
    "completeness": "430 of 486 GeoServer layers archived (88.5%). All 56 missing layers are phantom registrations, demo data, or virtual layers. All campus data with valid backing stores has been captured."
  }
}