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{
"$id": "https://proj.org/schemas/v0.4/projjson.schema.json",
"$schema": "http://json-schema.org/draft-07/schema#",
"description": "Schema for PROJJSON (v0.4)",
"$comment": "This file exists both in data/ and in schemas/vXXX/. Keep both in sync. And if changing the value of $id, change PROJJSON_CURRENT_VERSION accordingly in io.cpp",
"oneOf": [
{ "$ref": "#/definitions/crs" },
{ "$ref": "#/definitions/datum" },
{ "$ref": "#/definitions/datum_ensemble" },
{ "$ref": "#/definitions/ellipsoid" },
{ "$ref": "#/definitions/prime_meridian" },
{ "$ref": "#/definitions/single_operation" },
{ "$ref": "#/definitions/concatenated_operation" }
],
"definitions": {
"abridged_transformation": {
"type": "object",
"properties": {
"$schema" : { "type": "string" },
"type": { "type": "string", "enum": ["AbridgedTransformation"] },
"name": { "type": "string" },
"method": { "$ref": "#/definitions/method" },
"parameters": {
"type": "array",
"items": { "$ref": "#/definitions/parameter_value" }
},
"id": { "$ref": "#/definitions/id" },
"ids": { "$ref": "#/definitions/ids" }
},
"required" : [ "name", "method", "parameters" ],
"allOf": [
{ "$ref": "#/definitions/id_ids_mutually_exclusive" }
],
"additionalProperties": false
},
"axis": {
"type": "object",
"properties": {
"$schema" : { "type": "string" },
"type": { "type": "string", "enum": ["Axis"] },
"name": { "type": "string" },
"abbreviation": { "type": "string" },
"direction": { "type": "string",
"enum": [ "north",
"northNorthEast",
"northEast",
"eastNorthEast",
"east",
"eastSouthEast",
"southEast",
"southSouthEast",
"south",
"southSouthWest",
"southWest",
"westSouthWest",
"west",
"westNorthWest",
"northWest",
"northNorthWest",
"up",
"down",
"geocentricX",
"geocentricY",
"geocentricZ",
"columnPositive",
"columnNegative",
"rowPositive",
"rowNegative",
"displayRight",
"displayLeft",
"displayUp",
"displayDown",
"forward",
"aft",
"port",
"starboard",
"clockwise",
"counterClockwise",
"towards",
"awayFrom",
"future",
"past",
"unspecified" ] },
"unit": { "$ref": "#/definitions/unit" },
"id": { "$ref": "#/definitions/id" },
"ids": { "$ref": "#/definitions/ids" }
},
"required" : [ "name", "abbreviation", "direction" ],
"allOf": [
{ "$ref": "#/definitions/id_ids_mutually_exclusive" }
],
"additionalProperties": false
},
"bbox": {
"type": "object",
"properties": {
"east_longitude": { "type": "number" },
"west_longitude": { "type": "number" },
"south_latitude": { "type": "number" },
"north_latitude": { "type": "number" }
},
"required" : [ "east_longitude", "west_longitude",
"south_latitude", "north_latitude" ],
"additionalProperties": false
},
"bound_crs": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"$schema" : { "type": "string" },
"type": { "type": "string", "enum": ["BoundCRS"] },
"name": { "type": "string" },
"source_crs": { "$ref": "#/definitions/crs" },
"target_crs": { "$ref": "#/definitions/crs" },
"transformation": { "$ref": "#/definitions/abridged_transformation" },
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "source_crs", "target_crs", "transformation" ],
"additionalProperties": false
},
"compound_crs": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"type": { "type": "string", "enum": ["CompoundCRS"] },
"name": { "type": "string" },
"components": {
"type": "array",
"items": { "$ref": "#/definitions/crs" }
},
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name", "components" ],
"additionalProperties": false
},
"concatenated_operation": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"type": { "type": "string", "enum": ["ConcatenatedOperation"] },
"name": { "type": "string" },
"source_crs": { "$ref": "#/definitions/crs" },
"target_crs": { "$ref": "#/definitions/crs" },
"steps": {
"type": "array",
"items": { "$ref": "#/definitions/single_operation" }
},
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name", "source_crs", "target_crs", "steps" ],
"additionalProperties": false
},
"conversion": {
"type": "object",
"properties": {
"$schema" : { "type": "string" },
"type": { "type": "string", "enum": ["Conversion"] },
"name": { "type": "string" },
"method": { "$ref": "#/definitions/method" },
"parameters": {
"type": "array",
"items": { "$ref": "#/definitions/parameter_value" }
},
"id": { "$ref": "#/definitions/id" },
"ids": { "$ref": "#/definitions/ids" }
},
"required" : [ "name", "method" ],
"allOf": [
{ "$ref": "#/definitions/id_ids_mutually_exclusive" }
],
"additionalProperties": false
},
"coordinate_system": {
"type": "object",
"properties": {
"$schema" : { "type": "string" },
"type": { "type": "string", "enum": ["CoordinateSystem"] },
"name": { "type": "string" },
"subtype": { "type": "string",
"enum": ["Cartesian",
"spherical",
"ellipsoidal",
"vertical",
"ordinal",
"parametric",
"TemporalDateTime",
"TemporalCount",
"TemporalMeasure"] },
"axis": {
"type": "array",
"items": { "$ref": "#/definitions/axis" }
},
"id": { "$ref": "#/definitions/id" },
"ids": { "$ref": "#/definitions/ids" }
},
"required" : [ "subtype", "axis" ],
"allOf": [
{ "$ref": "#/definitions/id_ids_mutually_exclusive" }
],
"additionalProperties": false
},
"crs": {
"oneOf": [
{ "$ref": "#/definitions/bound_crs" },
{ "$ref": "#/definitions/compound_crs" },
{ "$ref": "#/definitions/derived_engineering_crs" },
{ "$ref": "#/definitions/derived_geodetic_crs" },
{ "$ref": "#/definitions/derived_parametric_crs" },
{ "$ref": "#/definitions/derived_projected_crs" },
{ "$ref": "#/definitions/derived_temporal_crs" },
{ "$ref": "#/definitions/derived_vertical_crs" },
{ "$ref": "#/definitions/engineering_crs" },
{ "$ref": "#/definitions/geodetic_crs" },
{ "$ref": "#/definitions/parametric_crs" },
{ "$ref": "#/definitions/projected_crs" },
{ "$ref": "#/definitions/temporal_crs" },
{ "$ref": "#/definitions/vertical_crs" }
]
},
"datum": {
"oneOf": [
{ "$ref": "#/definitions/geodetic_reference_frame" },
{ "$ref": "#/definitions/vertical_reference_frame" },
{ "$ref": "#/definitions/dynamic_geodetic_reference_frame" },
{ "$ref": "#/definitions/dynamic_vertical_reference_frame" },
{ "$ref": "#/definitions/temporal_datum" },
{ "$ref": "#/definitions/parametric_datum" },
{ "$ref": "#/definitions/engineering_datum" }
]
},
"datum_ensemble": {
"type": "object",
"properties": {
"$schema" : { "type": "string" },
"type": { "type": "string", "enum": ["DatumEnsemble"] },
"name": { "type": "string" },
"members": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": { "type": "string" },
"id": { "$ref": "#/definitions/id" },
"ids": { "$ref": "#/definitions/ids" }
},
"required" : [ "name" ],
"allOf": [
{ "$ref": "#/definitions/id_ids_mutually_exclusive" }
],
"additionalProperties": false
}
},
"ellipsoid": { "$ref": "#/definitions/ellipsoid" },
"accuracy": { "type": "string" },
"id": { "$ref": "#/definitions/id" },
"ids": { "$ref": "#/definitions/ids" }
},
"required" : [ "name", "members", "accuracy" ],
"allOf": [
{ "$ref": "#/definitions/id_ids_mutually_exclusive" }
],
"additionalProperties": false
},
"derived_engineering_crs": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"type": { "type": "string",
"enum": ["DerivedEngineeringCRS"] },
"name": { "type": "string" },
"base_crs": { "$ref": "#/definitions/engineering_crs" },
"conversion": { "$ref": "#/definitions/conversion" },
"coordinate_system": { "$ref": "#/definitions/coordinate_system" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name", "base_crs", "conversion", "coordinate_system" ],
"additionalProperties": false
},
"derived_geodetic_crs": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"type": { "type": "string",
"enum": ["DerivedGeodeticCRS",
"DerivedGeographicCRS"] },
"name": { "type": "string" },
"base_crs": { "$ref": "#/definitions/geodetic_crs" },
"conversion": { "$ref": "#/definitions/conversion" },
"coordinate_system": { "$ref": "#/definitions/coordinate_system" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name", "base_crs", "conversion", "coordinate_system" ],
"additionalProperties": false
},
"derived_parametric_crs": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"type": { "type": "string",
"enum": ["DerivedParametricCRS"] },
"name": { "type": "string" },
"base_crs": { "$ref": "#/definitions/parametric_crs" },
"conversion": { "$ref": "#/definitions/conversion" },
"coordinate_system": { "$ref": "#/definitions/coordinate_system" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name", "base_crs", "conversion", "coordinate_system" ],
"additionalProperties": false
},
"derived_projected_crs": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"type": { "type": "string",
"enum": ["DerivedProjectedCRS"] },
"name": { "type": "string" },
"base_crs": { "$ref": "#/definitions/projected_crs" },
"conversion": { "$ref": "#/definitions/conversion" },
"coordinate_system": { "$ref": "#/definitions/coordinate_system" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name", "base_crs", "conversion", "coordinate_system" ],
"additionalProperties": false
},
"derived_temporal_crs": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"type": { "type": "string",
"enum": ["DerivedTemporalCRS"] },
"name": { "type": "string" },
"base_crs": { "$ref": "#/definitions/temporal_crs" },
"conversion": { "$ref": "#/definitions/conversion" },
"coordinate_system": { "$ref": "#/definitions/coordinate_system" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name", "base_crs", "conversion", "coordinate_system" ],
"additionalProperties": false
},
"derived_vertical_crs": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"type": { "type": "string",
"enum": ["DerivedVerticalCRS"] },
"name": { "type": "string" },
"base_crs": { "$ref": "#/definitions/vertical_crs" },
"conversion": { "$ref": "#/definitions/conversion" },
"coordinate_system": { "$ref": "#/definitions/coordinate_system" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name", "base_crs", "conversion", "coordinate_system" ],
"additionalProperties": false
},
"dynamic_geodetic_reference_frame": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/geodetic_reference_frame" }],
"properties": {
"type": { "type": "string", "enum": ["DynamicGeodeticReferenceFrame"] },
"name": {},
"anchor": {},
"ellipsoid": {},
"prime_meridian": {},
"frame_reference_epoch": { "type": "number" },
"deformation_model": { "type": "string" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name", "ellipsoid", "frame_reference_epoch" ],
"additionalProperties": false
},
"dynamic_vertical_reference_frame": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/vertical_reference_frame" }],
"properties": {
"type": { "type": "string", "enum": ["DynamicVerticalReferenceFrame"] },
"name": {},
"anchor": {},
"frame_reference_epoch": { "type": "number" },
"deformation_model": { "type": "string" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name", "frame_reference_epoch" ],
"additionalProperties": false
},
"ellipsoid": {
"type": "object",
"oneOf":[
{
"properties": {
"$schema" : { "type": "string" },
"type": { "type": "string", "enum": ["Ellipsoid"] },
"name": { "type": "string" },
"semi_major_axis": { "$ref": "#/definitions/value_in_metre_or_value_and_unit" },
"semi_minor_axis": { "$ref": "#/definitions/value_in_metre_or_value_and_unit" },
"id": { "$ref": "#/definitions/id" },
"ids": { "$ref": "#/definitions/ids" }
},
"required" : [ "name", "semi_major_axis", "semi_minor_axis" ],
"additionalProperties": false
},
{
"properties": {
"$schema" : { "type": "string" },
"type": { "type": "string", "enum": ["Ellipsoid"] },
"name": { "type": "string" },
"semi_major_axis": { "$ref": "#/definitions/value_in_metre_or_value_and_unit" },
"inverse_flattening": { "type": "number" },
"id": { "$ref": "#/definitions/id" },
"ids": { "$ref": "#/definitions/ids" }
},
"required" : [ "name", "semi_major_axis", "inverse_flattening" ],
"additionalProperties": false
},
{
"properties": {
"$schema" : { "type": "string" },
"type": { "type": "string", "enum": ["Ellipsoid"] },
"name": { "type": "string" },
"radius": { "$ref": "#/definitions/value_in_metre_or_value_and_unit" },
"id": { "$ref": "#/definitions/id" },
"ids": { "$ref": "#/definitions/ids" }
},
"required" : [ "name", "radius" ],
"additionalProperties": false
}
],
"allOf": [
{ "$ref": "#/definitions/id_ids_mutually_exclusive" }
]
},
"engineering_crs": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"type": { "type": "string", "enum": ["EngineeringCRS"] },
"name": { "type": "string" },
"datum": { "$ref": "#/definitions/engineering_datum" },
"coordinate_system": { "$ref": "#/definitions/coordinate_system" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name", "datum" ],
"additionalProperties": false
},
"engineering_datum": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"type": { "type": "string", "enum": ["EngineeringDatum"] },
"name": { "type": "string" },
"anchor": { "type": "string" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name" ],
"additionalProperties": false
},
"geodetic_crs": {
"type": "object",
"properties": {
"type": { "type": "string", "enum": ["GeodeticCRS", "GeographicCRS"] },
"name": { "type": "string" },
"datum": {
"oneOf": [
{ "$ref": "#/definitions/geodetic_reference_frame" },
{ "$ref": "#/definitions/dynamic_geodetic_reference_frame" }
]
},
"datum_ensemble": { "$ref": "#/definitions/datum_ensemble" },
"coordinate_system": { "$ref": "#/definitions/coordinate_system" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name" ],
"description": "One and only one of datum and datum_ensemble must be provided",
"allOf": [
{ "$ref": "#/definitions/object_usage" },
{ "$ref": "#/definitions/one_and_only_one_of_datum_or_datum_ensemble" }
],
"additionalProperties": false
},
"geodetic_reference_frame": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"type": { "type": "string", "enum": ["GeodeticReferenceFrame"] },
"name": { "type": "string" },
"anchor": { "type": "string" },
"ellipsoid": { "$ref": "#/definitions/ellipsoid" },
"prime_meridian": { "$ref": "#/definitions/prime_meridian" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name", "ellipsoid" ],
"additionalProperties": false
},
"id": {
"type": "object",
"properties": {
"authority": { "type": "string" },
"code": {
"oneOf": [ { "type": "string" }, { "type": "integer" } ]
},
"version": {
"oneOf": [ { "type": "string" }, { "type": "number" } ]
},
"authority_citation": { "type": "string" },
"uri": { "type": "string" }
},
"required" : [ "authority", "code" ],
"additionalProperties": false
},
"ids": {
"type": "array",
"items": { "$ref": "#/definitions/id" }
},
"method": {
"type": "object",
"properties": {
"$schema" : { "type": "string" },
"type": { "type": "string", "enum": ["OperationMethod"]},
"name": { "type": "string" },
"id": { "$ref": "#/definitions/id" },
"ids": { "$ref": "#/definitions/ids" }
},
"required" : [ "name" ],
"allOf": [
{ "$ref": "#/definitions/id_ids_mutually_exclusive" }
],
"additionalProperties": false
},
"id_ids_mutually_exclusive": {
"not": {
"type": "object",
"required": [ "id", "ids" ]
}
},
"one_and_only_one_of_datum_or_datum_ensemble": {
"allOf": [
{
"not": {
"type": "object",
"required": [ "datum", "datum_ensemble" ]
}
},
{
"oneOf": [
{ "type": "object", "required": ["datum"] },
{ "type": "object", "required": ["datum_ensemble"] }
]
}
]
},
"object_usage": {
"anyOf": [
{
"type": "object",
"properties": {
"$schema" : { "type": "string" },
"scope": { "type": "string" },
"area": { "type": "string" },
"bbox": { "$ref": "#/definitions/bbox" },
"remarks": { "type": "string" },
"id": { "$ref": "#/definitions/id" },
"ids": { "$ref": "#/definitions/ids" }
},
"allOf": [
{ "$ref": "#/definitions/id_ids_mutually_exclusive" }
]
},
{
"type": "object",
"properties": {
"$schema" : { "type": "string" },
"usages": { "$ref": "#/definitions/usages" },
"remarks": { "type": "string" },
"id": { "$ref": "#/definitions/id" },
"ids": { "$ref": "#/definitions/ids" }
},
"allOf": [
{ "$ref": "#/definitions/id_ids_mutually_exclusive" }
]
}
]
},
"parameter_value": {
"type": "object",
"properties": {
"$schema" : { "type": "string" },
"type": { "type": "string", "enum": ["ParameterValue"] },
"name": { "type": "string" },
"value": {
"oneOf": [
{ "type": "string" },
{ "type": "number" }
]
},
"unit": { "$ref": "#/definitions/unit" },
"id": { "$ref": "#/definitions/id" },
"ids": { "$ref": "#/definitions/ids" }
},
"required" : [ "name", "value" ],
"allOf": [
{ "$ref": "#/definitions/id_ids_mutually_exclusive" }
],
"additionalProperties": false
},
"parametric_crs": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"type": { "type": "string", "enum": ["ParametricCRS"] },
"name": { "type": "string" },
"datum": { "$ref": "#/definitions/parametric_datum" },
"coordinate_system": { "$ref": "#/definitions/coordinate_system" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name", "datum" ],
"additionalProperties": false
},
"parametric_datum": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"type": { "type": "string", "enum": ["ParametricDatum"] },
"name": { "type": "string" },
"anchor": { "type": "string" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name" ],
"additionalProperties": false
},
"prime_meridian": {
"type": "object",
"properties": {
"$schema" : { "type": "string" },
"type": { "type": "string", "enum": ["PrimeMeridian"] },
"name": { "type": "string" },
"longitude": { "$ref": "#/definitions/value_in_degree_or_value_and_unit" },
"id": { "$ref": "#/definitions/id" },
"ids": { "$ref": "#/definitions/ids" }
},
"required" : [ "name" ],
"allOf": [
{ "$ref": "#/definitions/id_ids_mutually_exclusive" }
],
"additionalProperties": false
},
"single_operation": {
"oneOf": [
{ "$ref": "#/definitions/conversion" },
{ "$ref": "#/definitions/transformation" }
]
},
"projected_crs": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"type": { "type": "string",
"enum": ["ProjectedCRS"] },
"name": { "type": "string" },
"base_crs": { "$ref": "#/definitions/geodetic_crs" },
"conversion": { "$ref": "#/definitions/conversion" },
"coordinate_system": { "$ref": "#/definitions/coordinate_system" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name", "base_crs", "conversion", "coordinate_system" ],
"additionalProperties": false
},
"temporal_crs": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"type": { "type": "string", "enum": ["TemporalCRS"] },
"name": { "type": "string" },
"datum": { "$ref": "#/definitions/temporal_datum" },
"coordinate_system": { "$ref": "#/definitions/coordinate_system" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name", "datum" ],
"additionalProperties": false
},
"temporal_datum": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"type": { "type": "string", "enum": ["TemporalDatum"] },
"name": { "type": "string" },
"calendar": { "type": "string" },
"time_origin": { "type": "string" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name", "calendar" ],
"additionalProperties": false
},
"transformation": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"type": { "type": "string", "enum": ["Transformation"] },
"name": { "type": "string" },
"source_crs": { "$ref": "#/definitions/crs" },
"target_crs": { "$ref": "#/definitions/crs" },
"interpolation_crs": { "$ref": "#/definitions/crs" },
"method": { "$ref": "#/definitions/method" },
"parameters": {
"type": "array",
"items": { "$ref": "#/definitions/parameter_value" }
},
"accuracy": { "type": "string" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name", "source_crs", "target_crs", "method", "parameters" ],
"additionalProperties": false
},
"unit": {
"oneOf": [
{
"type": "string",
"enum": ["metre", "degree", "unity"]
},
{
"type": "object",
"properties": {
"type": { "type": "string",
"enum": ["LinearUnit", "AngularUnit", "ScaleUnit",
"TimeUnit", "ParametricUnit", "Unit"] },
"name": { "type": "string" },
"conversion_factor": { "type": "number" },
"id": { "$ref": "#/definitions/id" },
"ids": { "$ref": "#/definitions/ids" }
},
"required" : [ "type", "name" ],
"allOf": [
{ "$ref": "#/definitions/id_ids_mutually_exclusive" }
],
"additionalProperties": false
}
]
},
"usages": {
"type": "array",
"items": {
"type": "object",
"properties": {
"scope": { "type": "string" },
"area": { "type": "string" },
"bbox": { "$ref": "#/definitions/bbox" }
},
"additionalProperties": false
}
},
"value_and_unit": {
"type": "object",
"properties": {
"value": { "type": "number" },
"unit": { "$ref": "#/definitions/unit" }
},
"required" : [ "value", "unit" ],
"additionalProperties": false
},
"value_in_degree_or_value_and_unit": {
"oneOf": [
{ "type": "number" },
{ "$ref": "#/definitions/value_and_unit" }
]
},
"value_in_metre_or_value_and_unit": {
"oneOf": [
{ "type": "number" },
{ "$ref": "#/definitions/value_and_unit" }
]
},
"vertical_crs": {
"type": "object",
"properties": {
"type": { "type": "string", "enum": ["VerticalCRS"] },
"name": { "type": "string" },
"datum": {
"oneOf": [
{ "$ref": "#/definitions/vertical_reference_frame" },
{ "$ref": "#/definitions/dynamic_vertical_reference_frame" }
]
},
"datum_ensemble": { "$ref": "#/definitions/datum_ensemble" },
"coordinate_system": { "$ref": "#/definitions/coordinate_system" },
"geoid_model": {
"type": "object",
"properties": {
"name": { "type": "string" },
"interpolation_crs": { "$ref": "#/definitions/crs" },
"id": { "$ref": "#/definitions/id" }
},
"required" : [ "name" ],
"additionalProperties": false
},
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name"],
"description": "One and only one of datum and datum_ensemble must be provided",
"allOf": [
{ "$ref": "#/definitions/object_usage" },
{ "$ref": "#/definitions/one_and_only_one_of_datum_or_datum_ensemble" }
],
"additionalProperties": false
},
"vertical_reference_frame": {
"type": "object",
"allOf": [{ "$ref": "#/definitions/object_usage" }],
"properties": {
"type": { "type": "string", "enum": ["VerticalReferenceFrame"] },
"name": { "type": "string" },
"anchor": { "type": "string" },
"$schema" : {},
"scope": {},
"area": {},
"bbox": {},
"usages": {},
"remarks": {},
"id": {}, "ids": {}
},
"required" : [ "name" ],
"additionalProperties": false
}
}
}