{
  "$schema": "http://json-schema.org/draft-04/schema#",
  "id": "geojson.json#",
  "title": "Geo JSON object",
  "description": "Schema for a Geo JSON object",
  "type": "object",
  "required": ["type"],
  "properties": {
    "crs": {
      "$ref": "crs.json#"
    },
    "bbox": {
      "$ref": "bbox.json#"
    }
  },
  "oneOf": [
    {
      "$ref": "geometry.json#"
    }, {
      "$ref": "#/definitions/geometryCollection"
    }, {
      "$ref": "#/definitions/feature"
    }, {
      "$ref": "#/definitions/featureCollection"
    }
  ],
  "definitions": {
    "geometryCollection": {
      "title": "GeometryCollection",
      "description": "A collection of geometry objects",
      "required": ["geometries"],
      "properties": {
        "type": {
          "enum": ["GeometryCollection"]
        },
        "geometries": {
          "type": "array",
          "items": {
            "$ref": "geometry.json#"
          }
        }
      }
    },
    "feature": {
      "title": "Feature",
      "description": "A Geo JSON feature object",
      "required": ["geometry", "properties"],
      "properties": {
        "type": {
          "enum": ["Feature"]
        },
        "geometry": {
          "oneOf": [
            {
              "type": "null",
              "title": "null geometry"
            }, {
              "$ref": "geometry.json#"
            }
          ]
        },
        "properties": {
          "$ref": "#/definitions/featureProperties"
        },
        "id": {
          "type": ["string", "number"]
        }
      }
    },
    "featureCollection": {
      "title": "FeatureCollection",
      "description": "A Geo JSON feature collection",
      "required": ["features"],
      "properties": {
        "type": {
          "enum": ["FeatureCollection"]
        },
        "properties": {
          "$ref": "#/definitions/featureProperties"
        },
        "id": {
          "type": ["string", "number"]
        },
        "features": {
          "type": "array",
          "items": {
            "$ref": "#/definitions/feature"
          }
        }
      }
    },
    "featureProperties": {
      "title": "FeatureProperties",
      "description": "Properties of a feature or collection.",
      "oneOf": [
        {
          "title": "null",
          "type": "null"
        }, {
          "type": "object",
          "title": "featureProperties",
          "properties": {
            "includesData": {
              "type": "boolean"
            },
            "temporalElement": {

              "$ref": "../extent.json#/definitions/temporalElement"
            },
            "verticalElement": {
              "type": "array",
              "items": {
                "$ref": "../extent.json#/definitions/verticalExtent"
              }
            },
            "description": {
              "type": "string"
            },
            "featureName": {
              "type": "string"
            },
            "featureScope": {
              "type": "string"
            },
            "featureAcquisitionMethod": {
              "type": "string"
            },
            "identifier": {
              "type": "array",
              "items": {
                "$ref": "../citation.json#/definitions/identifier"
              }
            }
          }
        }
      ]
    }
  }
}