Difference between revisions of "Data Discovery (ACDD)"
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The netCDF Group at Unidata has recommended netCDF attributes for data discovery. Where compatible the spirals below provide like xpath references for DIF, ECHO, ECS, UMM and ISO. | The netCDF Group at Unidata has recommended netCDF attributes for data discovery. Where compatible the spirals below provide like xpath references for DIF, ECHO, ECS, UMM and ISO. | ||
Revision as of 21:34, August 25, 2014
The netCDF Group at Unidata has recommended netCDF attributes for data discovery. Where compatible the spirals below provide like xpath references for DIF, ECHO, ECS, UMM and ISO.
Attribute Convention for Data Discovery - Highly Recommended
These attributes are highly recommended by the Attribute Convention for Data Discovery
| Concept | Description | Dialect (Fit) Paths |
|---|---|---|
| Resource Title | A short description of the resource. The title should be descriptive enough so that when a user is presented with a list of titles the general content of the data set can be determined. | DIF /dif:DIF/dif:Entry_Title ECHO /*/echo:ShortName>/*/echo:LongName ECS /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:ShortName> /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:LongName ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:title/gco:CharacterString UMM /umm:UMM/umm:CollectionCitation/umm:Title |
| Abstract | A paragraph describing the resource. | DIF /dif:DIF/dif:Summary/dif:Abstract ECHO /*/echo:Description ISO /*/gmd:identificationInfo/*/gmd:abstract/gco:CharacterString UMM /umm:UMM/umm:Summary |
| Keyword | A word or phrase that describes some aspect of a resource. Can be one of several types. Note: The general identification keywords usually have a type of "theme" and are refered to as "theme keywords". Other types and vocabularies are used for other information. |
DIF (1) /dif:DIF/dif:Parameters/dif:Category DIF (1) /dif:DIF//dif:Parameters/dif:Topic DIF (1) /dif:DIF//dif:Parameters/dif:Term DIF (1) /dif:DIF//dif:Parameters/dif:Variable_Level_1 DIF (1) /dif:DIF//dif:Parameters/dif:Variable_Level_2 DIF (1) /dif:DIF//dif:Parameters/dif:Variable_Level_3 ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:CategoryKeyword ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:TopicKeyword ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:TermKeyword ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:VariableLevel1Keyword/echo:Value ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:VariableLevel2Keyword/echo:Value ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:VariableLevel3Keyword ECHO (1) /*/echo:ScienceKeywords/echo:ScienceKeyword/echo:DetailedVariableKeyword ECS (1) /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:DisciplineTopicParameters/ecs:DisciplineKeyword ECS (1) /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:DisciplineTopicParameters/ecs:TopicKeyword ECS (1) /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:DisciplineTopicParameters/ecs:TermKeyword ECS (1) /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:DisciplineTopicParameters/ecs:VariableKeyword ISO (1) /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords[gmd:type/gmd:MD_KeywordTypeCode='theme']/gmd:keyword/gco:CharacterString UMM (1) /umm:UMM/umm:ScienceKeywords/umm:Category UMM (1) /umm:UMM/umm:ScienceKeywords/umm:Topic UMM (1) /umm:UMM/umm:ScienceKeywords/umm:Term UMM (1) /umm:UMM/umm:ScienceKeywords/umm:VariableLevel1/umm:Value UMM (1) /umm:UMM/umm:ScienceKeywords/umm:VariableLevel1/umm:VariableLevel2/umm:Value UMM (1) /umm:UMM/umm:ScienceKeywords/umm:VariableLevel1/umm:VariableLevel2/umm:VariableLevel3/umm:Value UMM (1) /umm:UMM/umm:ScienceKeywords/umm:DetailedVariable |
Attribute Convention for Data Discovery - Recommended
These attributes are recommended by the Attribute Convention for Data Discovery
| Concept | Description | Dialect (Fit) Paths |
|---|---|---|
| Resource Identifier | Identifier for the resource described by the metadata | DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_DOI DIF /dif:DIF/dif:Reference/dif:DOI ECHO /*/echo:DataSetId ECHO (1) /*/echo:ShortName | /*/echo:LongName ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:identifier/gmd:MD_Identifier/gmd:code/gco:CharacterString |
| Naming Authority | The organization responsible for the maintenance of the identifier (namespace) | ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:identifier/gmd:MD_Identifier/gmd:authority ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:identifier/gmd:MD_Identifier/gmd:codeSpace(19115-1) |
| Keyword Vocabulary | If you are following a guideline or using a shared vocabulary for the words/phrases in your "keywords" attribute, put the name of that guideline here. Note: DIF, ECHO and ECS require that theme keywords come from the Global Change Master Directory list. |
ISO /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:thesaurusName/gmd:CI_Citation/gmd:title/gco:CharacterString |
| Common Data Model Datatype | The THREDDS data type for this resource. Note: Current values: vector, grid, textTable, tin, stereoModel, video. |
ISO /*/gmd:identificationInfo/*/gmd:spatialRepresentationType/gmd:MD_SpatialRepresentationTypeCode |
| Lineage Statement | Information and references for sources and processes that were used to create the dataset and an audit trail for modifications to the original data. | ISO /*/gmd:dataQualityInfo/gmd:DQ_DataQuality/gmd:lineage/gmd:LI_Lineage/gmd:statement/gco:CharacterString |
| Other Information | Miscellaneous information about the data. | ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:otherCitationDetails/gco:CharacterString |
| Creation Date | The date the resource was created | ISO //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='creation']/gmd:date/gco:Date ISO //gmd:CI_Citation/gmd:date/gmd:CI_Date[gmd:dateType/gmd:CI_DateTypeCode='creation']/gmd:date/gco:DateTime |
| Resource Contact | The organization or person responsible for answering questions about the resource. | DIF /dif:DIF/dif:Personnel[dif:Role='INVESTIGATOR'] ECHO /*/echo:ArchiveCenter ECHO /*/echo:Contacts/echo:Contact ECS /CollectionMetaDataFile/CollectionMetaDataSets/Collections/CollectionMetaData/Contact[Role='User Services'] ISO /*/gmd:identificationInfo/*/gmd:pointOfContact |
| Originator World Wide Web Address | The World Wide Web mail address of the principal author of the resource | ISO //gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode='author']/gmd:contactInfo/gmd:CI_Contact/gmd:onlineResource/gmd:CI_OnlineResource/gmd:linkage/gmd:URL |
| Originator Email Address | The electronic mail address of the principal author of the resource | DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Creator ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode='author']/gmd:contactInfo/gmd:CI_Contact/gmd:address/gmd:CI_Address/gmd:electronicMailAddress/gco:CharacterString |
| Originating Organization | The organization responsible for creating the resource | DIF /dif:DIF/dif:Originating_Center ECHO /*/echo:ProcessingCenter ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty/gmd:organisationName/gco:CharacterString |
| Project Name | The name of the project that the resource was associated with. | DIF /dif:DIF/dif:Project/dif:Short_Name DIF /dif:DIF/dif:Project/dif:Long_Name ECHO /*/echo:Campaigns/echo:Campaign/echo:ShortName and /*/echo:Campaigns/echo:Campaign/echo:LongName ISO /*/gmd:identificationInfo/*/gmd:aggregationInfo/gmd:MD_AggregateInformation/gmd:aggregateDataSetName/gmd:CI_Citation/gmd:title/gco:CharacterStringDS_AssociationTypeCode="largerWorkCitation" and DS_InitiativeTypeCode="project" ISO /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:keyword/gco:CharacterString with gmd:MD_KeywordTypeCode="project" |
| Processing Level | A code that indicates the extent of processing done in the creation of a dataset. | ECHO /*/echo:ProcessingLevelId ISO /gmi:MI_Metadata/gmd:contentInfo/gmd:MD_ImageDescription/gmd:processingLevelCode/gmd:MD_Identifier/gmd:code/gco:CharacterString |
| Acknowledgement | ISO /*/gmd:identificationInfo/*/gmd:credit/gco:CharacterString |
|
| Southernmost Latitude | The southernmost latitude of the bounding rectangle. Note: OGC-SOS offering lists may not include the entire dataset. A gml:id attribute can be used to identify the bounding offering. |
DIF (1) /dif:DIF/dif:Spatial_Coverage/dif:Southernmost_Latitude ECHO (1) /*/echo:Spatial/echo:HorizontalSpatialDomain/echo:Geometry/echo:BoundingRectangle/echo:SouthBoundingCoordinate ECS (1) /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:Spatial/ecs:HorizontalSpatialDomain/ecs:BoundingRectangle/ecs:SouthBoundingCoordinate ISO (1) /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox/gmd:southBoundLatitude/gco:Decimal UMM (1) /umm:UMM/umm:SpatialCoverage/umm:HorizontalSpatialDomain/umm:BoundingRectangle/umm:SouthBoundingCoordinate |
| Northernmost Latitude | The northernmost latitude of the bounding rectangle. Note: OGC-SOS offering lists may not include the entire dataset. A gml:id attribute (e.g. gml:id="network-all") can be used to identify the bounding offering. |
DIF (1) /dif:DIF/dif:Spatial_Coverage/dif:Northernmost_Latitude ECHO (1) /*/echo:Spatial/echo:HorizontalSpatialDomain/echo:Geometry/echo:BoundingRectangle/echo:NorthBoundingCoordinate ECS (1) /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:Spatial/ecs:HorizontalSpatialDomain/ecs:BoundingRectangle/ecs:NorthBoundingCoordinate ISO (1) /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox/gmd:northBoundLatitude/gco:Decimal UMM (1) /umm:UMM/umm:SpatialCoverage/umm:HorizontalSpatialDomain/umm:BoundingRectangle/umm:NorthBoundingCoordinate |
| Westernmost Longitude | The westernmost longitude of the bounding rectangle. Note: OGC-SOS offering lists may not include the entire dataset. A gml:id attribute can be used to identify the bounding offering. |
DIF (1) /dif:DIF/dif:Spatial_Coverage/dif:Westernmost_Longitude ECHO (1) /*/echo:Spatial/echo:HorizontalSpatialDomain/echo:Geometry/echo:BoundingRectangle/echo:WestBoundingCoordinate ECS (1) /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:Spatial/ecs:HorizontalSpatialDomain/ecs:BoundingRectangle/ecs:WestBoundingCoordinate ISO (1) /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox/gmd:westBoundLongitude/gco:Decimal UMM (1) /umm:UMM/umm:SpatialCoverage/umm:HorizontalSpatialDomain/umm:BoundingRectangle/umm:WestBoundingCoordinate |
| Easternmost Longitude | The easternmost longitude of the bounding rectangle. Note: OGC-SOS offering lists may not include the entire dataset. A gml:id attribute can be used to identify the bounding offering. |
DIF (1) /dif:DIF/dif:Spatial_Coverage/dif:Easternmost_Longitude ECHO (1) /*/echo:Spatial/echo:HorizontalSpatialDomain/echo:Geometry/echo:BoundingRectangle/echo:WestBoundingCoordinate ECS (1) /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:Spatial/ecs:HorizontalSpatialDomain/ecs:BoundingRectangle/ecs:EastBoundingCoordinate ISO (1) /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:geographicElement/gmd:EX_GeographicBoundingBox/gmd:eastBoundLongitude/gco:Decimal UMM (1) /umm:UMM/umm:SpatialCoverage/umm:HorizontalSpatialDomain/umm:BoundingRectangle/umm:EastBoundingCoordinate |
| Start Time | The start of the bounding time period | DIF /dif:DIF/dif:Temporal_Coverage/dif:Start_Date ECHO /*/echo:Temporal/echo:RangeDateTime/echo:BeginningDateTime ISO /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:temporalElement/gmd:EX_TemporalExtent/gmd:extent/gml:TimePeriod/gml:beginPosition |
| End Time | The end of the bounding time period | DIF /dif:DIF/dif:Temporal_Coverage/dif:Stop_Date ECHO /*/echo:Temporal/echo:RangeDateTime/echo:EndingDateTime ECHO /*/echo:Temporal/echo:EndsAtPresentFlag ECS /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:Temporal/ecs:RangeDateTime/ecs:RangeBeginningDate ECS /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:Temporal/ecs:RangeDateTime/ecs:RangeBeginningTime ECS /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:Temporal/ecs:RangeDateTime/ecs:RangeEndingDate ECS /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:Temporal/ecs:RangeDateTime/ecs:RangeEndingTime ISO /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:temporalElement/gmd:EX_TemporalExtent/gmd:extent/gml:TimePeriod/gml:endPosition |
| Vertical Minimum | The minimum height of the bounding rectangle | DIF /dif:DIF/dif:Spatial_Coverage/dif:Minimum_Altitude DIF /dif:DIF/dif:Spatial_Coverage/dif:Minimum_Depth ISO /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:verticalElement/gmd:EX_VerticalExtent/gmd:minimumValue/gco:Real |
| Resource Duration | The temporal duration of a resource. | |
| Temporal Resolution | The smallest time step included in the resource. | |
| Standard Name Vocabulary | The name of the shared vocabulary from which variable standard names are taken. | ISO /*/gmd:identificationInfo/*/gmd:descriptiveKeywords/gmd:MD_Keywords/gmd:thesaurusName/gmd:CI_Citation/gmd:title/gco:CharacterString |
| Vertical Maximum | The maximum height of the bounding rectangle | DIF /dif:DIF/dif:Spatial_Coverage/dif:Maximum_Altitude DIF /dif:DIF/dif:Spatial_Coverage/dif:Maximum_Depth ISO /*/gmd:identificationInfo/*/gmd:extent/gmd:EX_Extent/gmd:verticalElement/gmd:EX_VerticalExtent/gmd:maximumValue/gco:Real |
| Resource Access Constraints | Information about any constraints for accessing the data set. This includes any special restrictions, legal prerequisites, limitations and/or warnings on obtaining the data set. Some words that may be used in this field include: Public, In-house, Limited, Additional detailed instructions on how to access the data can be entered in this field. | DIF /dif:DIF/dif:Access_Constraints ECHO /*/echo:RestrictionFlag ECHO /*/echo:RestrictionComment ECS /ecs:CollectionMetaDataFile/ecs:CollectionMetaDataSets/ecs:Collections/ecs:CollectionMetaData/ecs:AccessConstraints ISO /*/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:resourceConstraints/gmd:MD_LegalConstraints/gmd:legalConstraints/gmd:MD_RestrictionCode ISO /*/gmd:identificationInfo/gmd:MD_DataIdentification/gmd:resourceConstraints/gmd:MD_LegalConstraints/gmd:otherConstraints/gco:CharacterString ISO /*/gmd:identificationInfo/srv:SV_ServiceIdentification/srv:restrictions/gmd:MD_LegalConstraints/gmd:legalConstraints/gco:CharacterString ISO /*/gmd:identificationInfo/srv:SV_ServiceIdentification/srv:restrictions/gmd:MD_LegalConstraints/gmd:otherConstraints/gco:CharacterString |
Attribute Convention for Data Discovery - Suggested
These attributes are suggested by the Attribute Convention for Data Discovery
| Concept | Description | Dialect (Fit) Paths |
|---|---|---|
| Contributor Name | Contributor to the resource | ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode='author'] ISO /*/gmd:identificationInfo/*/gmd:citation/gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode='originator'] |
| Contributor Role | The role of any individuals or institutions that contributed to the creation of the data. | |
| Publisher | Publisher of the cited resource | DIF /dif:DIF/dif:Data_Set_Citation/dif:Dataset_Publisher DIF /dif:DIF/dif:Reference/dif:Publisher ISO //gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode='publisher'] |
| Publisher URL | World Wide Web address associated with the publisher of the cited resource | DIF /dif:DIF/dif:Reference/dif:Publication_Place ISO //gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode=['publisher']/gmd:contactInfo |
| Publisher E-Mail | Email associated with the publisher of the cited resource | DIF /dif:DIF/dif:Reference/dif:Publication_Place ISO //gmd:CI_Citation/gmd:citedResponsibleParty/gmd:CI_ResponsibleParty[gmd:role/gmd:CI_RoleCode=['publisher']/gmd:contactInfo |
xPath Note: The xPaths included in this table use several wildcards. // means any path, so //gmd:CI_ResponsibleParty indicates a gmd:CI_ResponsibleParty anywhere in an XML file. /*/ indicates a single level with several possible elements. This usually indicates one of several concrete realizations of an abstract object. For example /*/gmd:identificationInfo could be gmd:MD_Metadata/gmd:identificationInfo or gmi:MI_Metadata/gmd:identificationInfo and gmd:identificationInfo//*/gmd:descriptiveKeywords could be gmd:identificationInfo/gmd:MD_DataIdentification/gmd:descriptiveKeywords or gmd:identificationInfo/srv:SV_ServiceIdentification/gmd:descriptiveKeywords. Fit: The fit of the dialect path with the concept is estimated on a scale of 1 = excellent two-way fit, 2 = one-way fit or some other problem, 3 - extension required.
