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Element Description
Note: this wiki page is a draft/ work in progress
The Spatial Representation Information element...
Best Practices
There are eighteen sub-elements that comprise Spatial Representation Information:
SpatialCoverageType: Denotes whether the spatial coverage of the collection is horizontal, vertical, horizontal and vertical, orbit, or vertical and orbit.
VerticalCoordinate System/AltitudeSystemDefinition/DatumName: The identification given to the level surface taken as the surface of reference from which measurements are compared.
VerticalCoordinateSystem/AltitudeSystemDefinition/DistanceUnits: The units in which altitude measurements are recorded.
VerticalCoordinateSystem/AltitudeSystemDefinition/EncodingMethod:
VerticalCoordinateSystem/AltitudeSystemDefinition/Resolutions: The minimum distance possible between two adjacent values, expressed in distance units of measure for the collection.
VerticalCoordinateSystem/DepthSystemDefinition/DatumName: The identification given to the level surface taken as the surface of reference from which measurements are compared.
VerticalCoordinateSystem/DepthSystemDefinition/DistanceUnits: The units in which measurements are recorded.
VerticalCoordinateSystem/DepthSystemDefinition/EncodingMethod:
VerticalCoordinateSystem/DepthSystemDefinition/Resolutions: The minimum distance possible between two adjacent values, expressed in distance units of measure for the collection.
HorizontalCoordinateSystem/GeodeticModel/HorizontalDatumName: The identification given to the reference system used for defining the coordinates of points.
HorizontalCoordinateSystem/GeodeticModel/EllipsoidName: Identification given to established representation of the Earth's shape.
HorizontalCoordinateSystem/GeodeticModel/SemiMajorAxis: Radius of the equatorial axis of the ellipsoid.
HorizontalCoordinateSystem/GeodeticModel/DenominatorOfFlatteningRatio: The ratio of the Earth's major axis to the difference between the major and the minor.
HorizontalCoordinateSystem/GeographicCoordinateSystem/GeographicCoordinateUnits: Units of measure used for the geodetic latitude and longitude resolution values (e.g., decimal degrees).
HorizontalCoordinateSystem/GeographicCoordinateSystem/LatitudeResolution: The minimum difference between two adjacent latitude values in the Geographic Coordinate System, expressed in Geographic Coordinate Units of measure, expressed as a two-digit decimal number, e.g., 0.01.
HorizontalCoordinateSystem/GeographicCoordinateSystem/LongitudeResolution: The minimum difference between two adjacent longitude values in the Geographic Coordinate System, expressed in Geographic Coordinate Units of measure, expressed as a two-digit decimal number, e.g., 0.01.
HorizontalCoordinateSystem/LocalCoordinateSystem/GeoReferenceInformation: The information provided to register the local system to the Earth (e.g. control points, satellite ephemeral data, and inertial navigation data).
HorizontalCoordinateSystem/LocalCoordinateSystem/Description: A description of the Local Coordinate System and geo-reference information.
Examples:
SpatialCoverageType: "Horizontal"
DistanceUnits: "Kilometers"
GeoReferenceInformation: "Control Points"
Element Specification
Providing the Spatial Representation Information element is optional (Cardinality: 0..1)
Model | Element | Type | Constraints | Required? | Cardinality | Notes |
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UMM-C | SpatialRepresentationInfo/SpatialCoverageType | String | 1 - 80 characters | Yes | 1 | |
UMM-C | SpatialRepresentationInfo/VerticalCoordinateSystem/AltitudeSystemDefinition/DatumName | String | 1 - 80 characters | No | 0..1 | |
UMM-C | SpatialRepresentationInfo/VerticalCoordinateSystem/AltitudeSystemDefinition/DistanceUnits | Enumeration | HectoPascals Kilometers Millibars | No | 0..1 | |
UMM-C | SpatialRepresentationInfo/VerticalCoordinateSystem/AltitudeSystemDefinition/EncodingMethod | No | 0..1 | |||
UMM-C | SpatialRepresentationInfo/VerticalCoordinateSystem/AltitudeSystemDefinition/Resolutions | Array | No | 0..* | ||
UMM-C | SpatialRepresentationInfo/VerticalCoordinateSystem/DepthSystemDefinition/DatumName | String | 1 - 80 characters | No | 0..1 | |
UMM-C | SpatialRepresentationInfo/VerticalCoordinateSystem/DepthSystemDefinition/DistanceUnits | Enumeration | Fathoms Feet HectoPascals Meters Millibars | No | 0..1 | |
UMM-C | SpatialRepresentationInfo/VerticalCoordinateSystem/DepthSystemDefinition/EncodingMethod | No | 0..1 | |||
UMM-C | SpatialRepresentationInfo/VerticalCoordinateSystem/DepthSystemDefinition/Resolutions | Array | No | 0..* | ||
UMM-C | SpatialRepresentationInfo/HorizontalCoordinateSystem/GeodeticModel/HorizontalDatumName | String | 1 - 80 characters | No | 0..1 | |
UMM-C | SpatialRepresentationInfo/HorizontalCoordinateSystem/GeodeticModel/EllipsoidName | String | 1 - 255 characters | No | 0..1 | |
UMM-C | SpatialRepresentationInfo/HorizontalCoordinateSystem/GeodeticModel/SemiMajorAxis | Number | No | 0..1 | ||
UMM-C | SpatialRepresentationInfo/HorizontalCoordinateSystem/GeodeticModel/DenominatorOfFlatteningRatio | Number | No | 0..1 | ||
UMM-C | SpatialRepresentationInfo/HorizontalCoordinateSystem/GeographicCoordinateSystem/GeographicCoordinateUnits | Enumeration | Decimal Degrees Kilometers Meters | No | 0..1 | |
UMM-C | SpatialRepresentationInfo/HorizontalCoordinateSystem/GeographicCoordinateSystem/LatitudeResolution | Number | No | 0..1 | ||
UMM-C | SpatialRepresentationInfo/HorizontalCoordinateSystem/GeographicCoordinateSystem/LongitudeResolution | Number | No | 0..1 | ||
UMM-C | SpatialRepresentationInfo/HorizontalCoordinateSystem/LocalCoordinateSystem/GeoReferenceInformation | String | 1 - 2048 characters | No | 0..1 | |
UMM-C | SpatialRepresentationInfo/HorizontalCoordinateSystem/LocalCoordinateSystem/Description | String | 1 - 2048 characters | No | 0..1 |
Metadata Validation and QA/QC
All metadata entering the CMR goes through the below process to ensure metadata quality requirements are met. All records undergo CMR validation before entering the system. The process of QA/QC is slightly different for NASA and non-NASA data providers. Non-NASA providers include interagency and international data providers and are referred to as the International Directory Network (IDN).
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Please see the expandable sections below for flowchart details.
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ARC Automated Rules
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Dialect Mappings
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DIF 9 (Note: DIF-9 is being phased out and will no longer be supported after 2018) |
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DIF 10Providing the Reference element is optional (Cardinality: 0..*)
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ECHO 10Publication Reference does not map to ECHO 10.
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ISO 19115-2 MENDSProviding the Publication Reference element is not required (Cardinality: 0..*)
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ISO 19115-2 SMAP Providing the Publication Reference element is not required (Cardinality: 0..*)
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UMM Migration
UMM Version 1.9.0 | Translation Direction | UMM Version 1.10.0 |
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Future Mappings
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ISO 19115-1Providing the Publication Reference element is not required (Cardinality: 0..*)
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History
UMM Versioning
Version | Date | What Changed |
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1.10.0 | 5/2/2018 | No changes were made for Collection Data Type during During the transition from version 1.9.0 to 1.10.0, the sub element GeographicCoordinateUnits was added and is enumerated. |
1.9.0 |
ARC Documentation
Version | Date | What Changed | Author |
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1.0 | 11/16/18 | Recommendations/priority matrix transferred from internal ARC documentation to wiki space |