ISO/TC211 Geographic information/geomatics Metadata Berlin Plenary Tutorial 31 October 2003

Transcription

1 ISO/TC211 Geographic information/geomatics Metadata Berlin Plenary Tutorial 31 October 2003 David Danko Work Item 15 - Project Leader ddanko@esri.com

2 Metadata Data about Data Geospatial data has a long history using Metadata Map catalogs Maps and Charts Imagery Digital data files

3 Identification Symbols (Feature Codes) Date Paper Maps Warnings Sources Producer Navigation notices Accuracy Reference system Title Scale Location

4 Metadata perspectives Why it s important? Expansion in the use of Geographic Information Proliferation of data Non-geographers using geospatial data The producer is not the user Geospatial data is imperfect A model, a point of view Assumptions, limitations, approximations, simplifications Expensive Reuse Data management Why should it be standardized? Provide an understanding of data around the globe and across information communities

5 Metadata Applications To understand the right data for the right purpose Locate Find Discover Evaluate Restrictions Quality Reputation Extract Order Download Employ Apply Use

6 ISO 19115:2003 Metadata Stage date:

7 ISO 19115:2003 Scope...the schema required for describing geographic information and services....information about the identification, the extent, the quality, the spatial and temporal schema, spatial reference, and distribution of digital geographic data....applicable to the cataloguing of datasets, clearinghouse activities, and the full description of datasets for a wide range of geographic applications. applicable to geographic datasets, dataset series, and individual geographic features and attributes...may be used for other forms of geographic data such as map, charts, textual documents

8 Developed following the ISO Process Formal Process Refined over 50 years Stages and timelines fully defined Consensus based Drafts considered until consensus reached through voting process by P- members

9 ISO metadata foundation Regional metadata standards ANZLIC Working Group on Metadata: Core Metadata Elements Guidelines Draft 7, Australia and New Zealand Land Information Council, November 1995, Sydney. the Canadian Directory Information Describing Digital Geo-referenced Data Sets, Canadian General Standards Board, July 1994, Ottawa. Standard for Geographic Information - Metadata, European Committee for Standardisation (CEN), September 1996, Brussels. Content Standard for Geospatial Metadata Federal Geographic Data Committee, June 8, 1994, Washington DC Other influential documents Digital Geographic Information Exchange Standard (Digest), Version 1.2. Digital Geographic Information Working Group, January 1994, IHO Transfer Standard for Digital Hydrographic Data, International Hydrographic Bureau, October 1995, Monaco Spatial Data Transfer Standard (SDTS), US Department of Commerce, August 1992, Gaithersburg, MD Application Profile for the Government Information Locator Service (GILS), US Department of Commerce, December 1994, Gaithersburg, MD Cartographic materials: A manual of interpretation for AACR2, Anglo-American Committee on Cataloguing of Cartographic materials, 1982, Chicago USMARC Format for Bibliographic Data, US Library of Congress, 1988, Washington, DC

10 ISO 19115:2003 Metadata applications DS_DataSet GF_FeatureType 1..* 1..* MD_Metadata FE_Feature <<Abstract>> DS_Aggregate 1..* GF_PropertyType FE_FeatureAttribute DS_Series DS_Initiative DS_OtherAssociation DS_Platform DS_Sensor DS_ProductionSeries DS_StereoMate

11 Identification Information Locate Data Quality Information Metadata packages Developed to fulfill primary metadata applications 19113,14 Evaluate Metadata Extension Information Spatial Representation Information Reference System Information 19108, 11, , 21, 23, Extract Constraint Information Portrayal Catalogue Information Distribution Information Content Information Application Schema Information Employ Maintenance Information

12 ISO 19115: 2003 Metadata schema object models MD_Usage + specificusage : CharacterString + usagedatetime[0..1] : DateTime + userdeterminedlimitations[0..1] : CharacterString + usercontactinfo [1..*] : CI_ResponsibleParty +resourcespecificusage MD_BrowseGraphic +graphicoverview + filename : CharacterString + filedescription[0..1] : CharacterString + filetype[0..1] : CharacterString MD_Metadata (from Metadata entity set information) +identificationinfo 1..* <<Abstract>> MD_Identification + citation : CI_Citation + abstract : CharacterString + purpose [0..1] : CharacterString + credit [] : CharacterString + status [] : MD_ProgressCode + pointofcontact [] : CI_ResponsibleParty MD_Constraints (from Constraint information) +resourceconstraints <<CodeList>> MD_TopicCategoryCode + farming + biota + boundaries + climatologymeterologyatmosphere + economy + elevation + environment + geoscientificinformation + health + imagerybasemapsearthcover + intelligencemilitary + inlandwaters + location + oceans + planningcadastre + society + structure + transportation + utilitiescommunications MD_Format (from Distribution information) <<CodeList>> MD_KeywordTypeCode + discipline + place + stratum + temporal + theme +resourceformat characterset: documented if ISO is not used {MD_Metadata.hierarchyLevelCode = "dataset" implies count (geographicbox) + count (geographicdescription) >=1} +descriptivekeywords MD_Keywords + keyword[1..*] : CharacterString + type [0..1] : MD_KeywordTypeCode + thesaurusname[0..1] : CI_Citation +resourcemaintenance MD_MaintenanceInformation (from Maintenance information) MD_DataIdentification + spatialrepresentationtype [] : MD_SpatialRepresentationTypeCode + spatialresolution [] : MD_Resolution + language [1..*] : CharacterString + characterset [0..1] : MD_CharacterSetCode = "utf8" + topiccategory [1..*] : MD_TopicCategoryCode + geographicbox [] : EX_GeographicBoundingBox + geographicdescription [] : EX_GeographicDescription + environmentdescription [0..1] : CharacterString + extent [] : EX_Extent + supplementalinformation [0..1] : CharacterString <<Union>> MD_Resolution + equivalentscale : MD_RepresentativeFraction + distance : Distance <<CodeList>> MD_CharacterSetCode + ucs2 + ucs4 + utf8 + utf16 + isoiec8859oneto15 + jis + shiftjis + eucjp MD_ServiceIdentification <<CodeList>> MD_ProgressCode + completed + historicalarchive + obsolete + ongoing + planned + required + underdevelopment Scale (from Units of Measure) /Scale <<DataType>> MD_RepresentativeFraction /+ denominator : Integer <<CodeList>> MD_SpatialRepresentationTypeCode + vector + grid + texttable + TIN + stereomodel + video Where MD_Representative Fraction.denominator = 1/Scale.measure And Scale.targetUnits = Scale.sourceUnits

13 Citation data types <<DataType>> CI_Citation + title : CharacterString + alternatetitle [] : CharacterString + date [1..*] : CI_Date + edition [0..1] : CharacterString + editiondate [0..1] : Date + identifier [] : CharacterString + identifiertype [] : CharacterString + citedresponsibleparty [] : CI_ResponsibleParty + presentationform [] : CI_PresentationFormCode + series [0..1] : CI_Series + othercitationdetails [0..1] : CharacterString + collectivetitle[0..1] : CharacterString + ISBN[0..1] : CharacterString + ISSN[0..1] : CharacterString <<DataType>> count of (individualname + organisationname + position Name) > 0 CI_ResponsibleParty + individualname[0..1] : CharacterString + organisationname[0..1] : CharacterString + positionname[0..1] : CharacterString + contactinfo [0..1] : CI_Contact + role : CI_RoleCode <<DataType>> CI_Contact + phone [0..1] : CI_Telephone + address [0..1] : CI_Address + onlineresource [0..1] : CI_OnlineResource + hoursofservice [0..1] : CharacterString + contactinstructions [0..1] : CharacterString <<CodeList>> CI_RoleCode + resourceprovider + custodian + owner + user + distributor + originator + pointofcontact + principalinvestigator + processor + publisher <<DataType>> CI_Series + name [0..1] : CharacterString + issueidentification [0..1] : CharacterString + page [0..1] : CharacterString <<DataType>> CI_Date + date : Date + datetype : CI_DateTypeCode <<CodeList>> CI_DateTypeCode + creation + publication + revision <<CodeList>> CI_PresentationFormCode + documentdigital + documenthardcopy + imagedigital + mapdigital + maphardcopy + modeldigital + modelhardcopy + profiledigital + profilehardcopy + tabledigital + tablehardcopy + videodigital + videohardcopy <<DataType>> CI_OnlineResource + linkage : URL + protocol [0..1] : CharacterString + applicationprofile [0..1] : CharacterString + name [0..1] : CharacterString + description [0..1] : CharacterString + function [0..1] : CI_OnLineFunctionCode <<DataType>> CI_Address + deliverypoint [] : CharacterString + city [0..1] : CharacterString + administrativearea [0..1] : CharacterString + postalcode [0..1] : CharacterString + country [0..1] : CharacterString + electronicmailaddress[] : CharacterString <<CodeList>> CI_OnLineFunctionCode + download + information + offlineaccess + order + search URL <<DataType>> CI_Telephone + voice [] : CharacterString + facsimile [] : CharacterString

14 Extent data types EX_BoundingPolygon + polygon[1..*] : GM_Object +geographicelement <<Abstract>> EX_GeographicExtent + extenttypecode [0..1] : Boolean = "1" +spatialextent 1..* EX_GeographicBoundingBox + westboundlongitude : Angle + eastboundlongitude : Angle + southboundlatitude : Angle + northboundlatitude : Angle <<DataType>> EX_Extent + description[0..1] : CharacterString +temporalelement EX_TemporalExtent + extent : TM_Primitive EX_SpatialTemporalExtent EX_GeographicDescription + geographicidentifier : MD_Identifier count(description + geographicelement + temporalelement + verticalelement) >0 +verticalelement EX_VerticalExtent + minimumvalue : Real + maximumvalue : Real + unitofmeasure : UomLength +verticaldatum 1 SC_VerticalDatum (from Spatial Referencing by Coordinates)

15 CodeLists <<CodeList>> MD_ProgressCode + completed + historicalarchive + obsolete + ongoing + planned + required + underdevelopment Name DomainCode Definition MD_ProgressCode ProgCode status of the resource completed 001 production has been completed historicalarchive 002 data has been stored offline obsolete 003 data is no longer relevant ongoing 004 data is continuously being... planned 005 fixed date has been established required 006 data needs to be generated or... underdevelopment 007 data is currently in the process...

16 ISO 19115: 2003 Metadata data dictionary Name/Role Name Short Name Definition Obligation/ Condition Maximum occurrence Data type Domain 29 MD_Identific ation ident basic information required to uniquely identify a resource 30 citation idcitation citation data for the resource 31 abstract idabs brief narratiave summary 32 purpose idpurp summary of the intentions with which the resource was developed 33 credit idcredit recognition of those who contributed to the resource 34 statuscode idstatcode status of resource Use obligation from referencing object Use maximum occurrence for referencing object Aggregated Class (MD_Metadata) <<Abstract>> Lines M 1 Class CI_Citation <<DataType>> (B3.2) M 1 CharacterString Free text O 1 CharacterString Free text O 1 CharacterString Free text O N Class MD_ProgressCode <<CodeList>> (B.6.26)

17 Recommended core metadata for geographic datasets Dataset title Dataset reference date Dataset responsible party Geographic location of the dataset (by four coordinates or by geographic identifiers) Dataset language Dataset character set Dataset topic category Spatial Resolution Abstract describing the dataset Distribution format Additional extent information (vertical and temporal) Spatial representation type Reference system Lineage statement On-line resource Metadata file identifier Metadata standard name Metadata standard version Metadata language Metadata character set Metadata point of contact Metadata time stamp Mandatory

18 ISO 19115:2003 Designed: to support geographic information; to work with wider information technology standards and practices; to serve the global community, in a multi-national, multi-language environment; based on a foundation of national, regional, and special information community standards and experiences Developed through a rigorous, consensus ISO process

19 New Metadata Work Items ISO/TS Geographic Information Metadata Dataset Implementation Specification ISO Geographic Information Metadata Part 2 Extensions for Imagery and Gridded Data

20 Scope ISO/TS This implementation specification is applicable to digital geographic datasets and can be used to describe many other forms of geographic data such as maps, charts, and textual documents. It provides information about the identification, the extent, the quality, the spatial and temporal reference, and the distribution of digital geographic data. More specifically, this specification provides an implementation UML model based on the ISO abstract UML model and defines an XML schema derived from the implementation UML model.

21 How We re Building ISO Implementation UML Model (ISO 19139) Transformation with Rational Rose Scripts Create Implementation Model of Dataset Profile with Rational Rose Scripts Harmonized ISO Model Metadata XML Schema (s) Intermediate XML Description XSLT Transformation Stylesheet

22 ISO Schedule Working Draft: Preliminary Draft TS: Draft TS: Technical Specification:

23 ISO Geographic Information Metadata Part 2 Extensions for Imagery and Scope Gridded Data This International Standard extends ISO 19115:2003 Geographic Information Metadata by defining the schema and additional metadata required for imagery and gridded data

24 Liaison Organizations and Related Work Consortium IEEE ISPRS WMO FGDC Metadata Remote Sensing Extensions IHO S-57 Edition 4 SMPTE Commercial SPOT JTC1/SC24 ISO/IEC BIFF ISO Imagery Extensions ISO 19115:2003

25 Proposed Extension Identification Information New Imagery Elements and Existing Classes Mission_Completion Mission_Description Mission_Significant_Event Mission_Start_Date Platform_Information MD_Identification Platform_and_Instrument_Identification Data_Dictionary_Reference Science_Paper User's_Guide

26 Proposed Extension Data Quality Lineage New Imagery Elements and Existing Classes Algorithm_Change_History Algorithm_Identifiers Algorithm_Peer_Review_Information Algorithm_Reference Algorithm_Text_Description Command_Line_Processing_Parameter Processing_Change_History Processing_Documentation Processing_Identifiers Processing_Procedure_Description Processing_Run_History Processing_Software_Reference LI_ProcessStep

27 ISO Schedule Working Draft: Committee Draft: CD2: Draft International Standard: Final DIS: IS:

28 Summary ISO Metadata Metadata is absolutely essential for all aspects of spatial data handling Locate Evaluate Extract Employ ISO development Based on a solid foundation of national, regional, and information community standards Has broad global participation Has gone through formal development cycles ISO Standard Based on a harmonized object model Designed to support geographic information Designed to fill a broad range of requirements Designed to serve the global community in a multinational multi-language environment Recommended core with a full comprehensive profile Metadata in an ISO standard Allows expanded networks Provides a common understanding Global Interoperability The Foundation for Spatial Data Infrastructures