Geospatial standards Beyond FGDCOutlinesISO/TC 211OGCWhat’s new with ISO metadata standard?ISO Metadata: contentSlide 7Slide 8ISO metadata: core elementsISO metadata: UMLISO metadata: XMLWhy format change?Multi-level metadataGreater dependency on toolsPreparing transition to ISO metadataSlide 16Geospatial standards Beyond FGDCGeog 458: Map Sources and ErrorsMarch 3, 2006Outlines•Major developers of geospatial standards–ISO TC 211–OGC•Geospatial metadata content standards–Transition from CSDGM to ISO metadataISO/TC 211•ISO is an international, independent, and formal standard organizations–ANSI is the U.S. member body of ISO•ISO/TC 211 is responsible for standardization in the field of digital geographic information•Ultimate–Their standards will form ultimate geospatial standards across public/private or any geographic level –Some generic FGDC-approved standards will migrate into ISO TC 211 standards•Transition from FGDC metadata content standard to ISO metadata content standards•Comprehensive–Standards will specify methods, tools and services for data management (including definition and description), acquiring, processing, analyzing, accessing, presenting and transferring such data in digital/electronic form between different users, systems and locations.OGC•Non-profit, international, voluntary consensus standard organization•Develops standards for geospatial and location based services–Transition from GISystem to GIService–Concept of internet (wired/ wireless) as market place than route•Open environment–Focus on open and extensible software application programming interfaces for GIS; promotes OO paradigms or interoperability•Technical–Focus on lower-level geospatial activities (e.g. implementing web mapping interface, defining geometry type) –Their works include web map service, web feature service, web catalogue service, and location based serviceWhat’s new with ISO metadata standard?•Contents–CSDGM similar & new elements–Domains and conditionality–Essential or core elements•Formats–Document or production rules have disappeared–Formatted for better interoperability: UML or XML–Multi-level metadataISO Metadata: contentCSDGM Similar Elements–Many elements overlap•Distribution, identification, spatial reference–new terminology and definitionsCSDGM = Originator ISO = Responsible Partyw/ Role = originatorcustodianownerpublisher….ISO Metadata: contentNew (non-CSDGM) Elements–International elementsData / Metadata Language –Extended elementsCSDGM = geographic and temporal extentISO = geographic, temporal, & vertical extent–Lacking elementsISO Topic Category – 19 standardized subject categories to facilitate data discoveryISO Metadata: contentDomains and Conditionality–More fixed domains in place of free textResponsible Party - Role and Topic Categories represented as codes• Role = Originator (006)• Topic Category = Transportation (018)–Fewer mandatory elementsCore contains only 7 mandatory elements–More optional elementsISO metadata: core elements Dataset title Spatial representation typeDataset reference date Reference systemDataset responsible party Lineage statementGeographic location On-line resourceDataset language Metadata file identifierDataset character set Metadata standard nameDataset topic category Metadata standard versionSpatial resolution Metadata languageAbstract Metadata character setDistribution format Metadata point of contactAdditional extent info (vert / temp) Metadata date stampall national profiles of ISO must include the core*mandatoryISO metadata: UMLThe format of the standard itself is changing. CSDGM was published as a document.ISO 19115 is published as a UML diagram and a supporting Data DictionaryISO metadata: XMLISO 19139 will be published as an XML schema with supporting documentation.Why format change?Create more consistent, robust metadata–Metadata is currently created in multiple formats (txt, doc, html, etc.) with the least robust, txt, format serving as the primary metadata transfer format1) internally harvest metadata from the data and (i.e. more automated feature)2) manage data.Multi-level metadata•Hierarchical organization of metadata–Data Series - wetlands–Dataset - Paducah wetlands–Feature Type - marsh–Feature Instance - Mandy’s Marsh–Attribute Type - salinity–Attribute Instance - actual % water salinityGreater dependency on tools •Since the standard has been crafted as a series of UML diagrams and XML schemas, those metadata experts use to referencing the CSDGM standard document must now choose… do they: 1) learn UML and XML so that they can work with the standard directly or 2) put faith in the tools to provide a useful interface to the standard?3)This is somewhat analogous to the move from the GIS command line to the graphic user interface.Preparing transition to ISO metadata•Any conversion tools between CSDGM and ISO metadata?–FGDC contracted Intergraph/SMMS–ArcCatalog •ArcCatalog provides ISO metadata editor (only includes core elements)Preparing transition to ISO metadata•Add one or more ISO Topic Categories to your existing CSDGM metadata records as Theme_Keywordsboundaries oceans health transportation economy societyelevation farming locationbiota structure environmentutilitiesCommunication intelligenceMilitarygeoscientificInformation inlandWatersimageryBaseMapsEarthCover