title: Information for a specific Discrete Global Grid System zone
description: Zone information for a particular zone of a DGGS, including useful information such as zone geometry, data access links and statistics
type: object
required:
- id
- links
properties:
  id:
    description: Zone identifier based on the DGGRS.
    type: string
  links:
    description: Links to related resources. A `[ogc-rel:dggrs-zone-data]` link to retrieve data for this zone and a `[ogc-rel:dggrs]` back to the `.../dggs` resource must be included.
    type: array
    items:
      $ref: '../../schemas/common-core/link.yaml'
  shapeType:
    description: The type of shape for the zone geometry (e.g., hexagon or pentagon)
    type: string
  level:
    description: The refinement level of this zone
    type: integer
    minimum: 0
  crs:
    description: The Coordinate Reference System in which the geometry, centroid and bbox properties are specified
    type: string
    format: uri
    default: '[OGC:CRS84]'
  centroid:
    description: The centroid of the zone, in the CRS specified in crs property
    type: array
    items:
      type: number
      minItems: 2
      maxItems: 3
  bbox:
    description: The spatial envelope of the zone (bounding box), in the CRS specified in crs property
    type: array
    items:
      type: number
      minItems: 4
      maxItems: 6
  areaMetersSquare:
    description: Surface area of the zone in meters square.
    type: number
  volumeMetersCube:
    description: Volume of the zone in meters cube for a DGGS with three spatial dimension.
    type: number
  temporalDurationSeconds:
    description: Amount of time covered by the zone for a temporal DGGS.
    type: number
  geometry:
    description: Spatial geometry of the zone.
    allOf:
      - format: geometry-polygon
      # JSON Schema not supported in OpenAPI 3.0
      - $ref: '../../schemas/geojson/PolygonFeature.yaml'
  temporalInterval:
    description: Sart and end time of the zone.
    type: array
    items:
      type: string
    minItems: 2
    maxItems: 2
  statistics:
    type: object
    description: Statistics for individual fields of the data (e.g., fields of the range of a coverage, or relevant numeric properties of a feature collection)
    additionalProperties:
      type: object
      properties:
        minimum:
          type: number
        maximum:
          type: number
        average:
          type: number
        stdDev:
          type: number
