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U.S. National Spatial Data Infrastructure

U.S. National Spatial Data Infrastructure. Douglas Nebert FGDC/GSDI Secretariat. Foundation of US NSDI. NSDI established as initiative under the interagency coordinating committee, the Federal Geographic Data Committee (FGDC)

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U.S. National Spatial Data Infrastructure

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  1. U.S. National Spatial Data Infrastructure Douglas Nebert FGDC/GSDI Secretariat

  2. Foundation of US NSDI • NSDI established as initiative under the interagency coordinating committee, the Federal Geographic Data Committee (FGDC) • FGDC has 17 member federal organizations, official liaison with 35 state councils, and other sectoral organizations • Executive Order 12906 (1994) compelled federal government participation in NSDI

  3. Participation in NSDI through FGDC • US Federal Government agencies (17) • 35 state geo-information councils • National States Geographic Info Council • National Association of Counties • National League of Cities • Universities (UCGIS) • Vendor community: OpenGIS Consortium

  4. Thematic Subcommittees Standards . . . Clearinghouse Transportation Water Elevation Orthoimagery Cadastre Geodetic Governmental Units Geology Vegetation Working Groups Metadata Framework Organization of FGDC Steering Committee Coordination Group Secretariat Staff

  5. Legal Framework • FGDC constituted through the Executive Branch, Office of Management and Budget (OMB) Circular A-67 for interagency coordination on geographic information • Only federal members permitted to vote on adoption of FGDC standards and policies, but process open to all • FGDC encourages standards and specification development in ISO, ANSI, and OGC by all NSDI participants

  6. Roles and Responsibilities • FGDC Secretariat: staff of ~15, provides forum for policies and standards that integrate into a coherent NSDI • Steering Committee: staffed by agency managers, meets 2-3 times per year, approval of policies and FGDC Standards • Coordination Group: chairs of all WGs and Thematic Subcommittees and agency reps, meets monthly • WG and TS members: volunteer domain experts

  7. NSDI Funding • Annual allocation to FGDC Secretariat of approximately $3.6M • Cooperative Agreements Program allots between $1-2M per year from this for sustainable NSDI- building projects • FGDC budget covers Secretariat expenses, interagency projects, and common-use infrastructure maintenance • FGDC member organizations invest at least as much in SDI operations

  8. Standards • OMB Circular 119 requires governmental bodies to work first through international and national standards bodies before developing government-specific standards • FGDC participates in US National Standards for geomatics (ANSI INCITS-L1) and as part of US delegation to ISO TC 211 • Data content standards and the Metadata Standard were developed through FGDC – will be migrating this process under ANSI

  9. Software interfaces (Implementation Specifications) Regional SDI Coordination Endorsed practices and specifications OpenGIS Consortium, W3C Other NSDIs NSDI ISO TC 211 National Standards Content standards, Authority for data Foundations for implementation. (Abstract standards) NSDI and Standards Advocacy

  10. Intellectual Property Rights/Pricing • NSDI founded on principle of “freedom of discovery” to promote awareness and access to all geo-information • Encourage the publication of ALL metadata for data for free or for a fee with the metadata declaring access characteristics and asserter property rights • Federal agencies must make all non-sensitive data available only at the cost of dissemination, but no standard fee schedule exists (per OMB A-130)

  11. Educational Aspects • FGDC has published educational materials and reference implementations of software to promote competence in NSDI concepts • FGDC underwrites local, regional, and national training opportunities through a cadre of on-call trainers • Research grants provided to University Consortium for Geo Information Sciences (UCGIS) for NSDI curricula and evaluation

  12. Content: Core Data • Core data are known as Framework and represent the most commonly used data in base mapping, collected by various agencies: • Elevation • Hydrography (Surface Water) • Governmental Units (Boundaries) • Orthoimagery • Transportation (multi-modal) • Cadastre • Geodetic Control

  13. Framework Data • Federal agency leads defined for each theme • Standardization of Framework representation non-existent until this year • Multi-sectoral participation in ANSI-sponsored standards development teams for Framework underway to define Core representation • Coordination of Framework data service providers to be formalized within each community

  14. Content: Other Data • US NSDI encourages the documentation, publication, and service of all types of geo- information • Abundant environmental, imagery, and other non-Framework data are documented and available through Clearinghouse • Data content standards for non-Framework data are encouraged to promote exchange

  15. Semantic Interoperability • Past FGDC Data Content Standards were not done using consistent modeling and implementation guidance, but provided, at best, semantic guidance on content • Framework Data Content Standards now under development will include common core UML models, documentation, applying a feature cataloguing methodology, identifier systems, and define a single reference application schema for each theme to promote exchange

  16. Semantic Resources • Because geographic data is so diverse in its discipline and usage, the development of a common set of Theme Keywords to be used across all disciplines has been a problem • ISO 19115 Categories provides one high level classification of generic data • International cooperation is sought to identify and endorse a single set of thematic keywords with codes for common use!

  17. Data Documentation • FGDC Content Standard for Digital Geospatial Metadata (CSDGM) published in 1994 and revised in 1998, US contribution to ISO 19115 metadata standardization effort • Over 130 government, commercial, and academic data catalogs exist in the US with hundreds of thousands of data sets described using CSDGM • US will transition to adopting ISO 19115 Metadata • Metadata points to direct data download in about 20% of the records

  18. Community support • Provide reference implementation software to promote adoption of common standards: • Collaborate with UNEP to maintain Enraemed ISO metadata collection software • Collaborate with FAO to modify data documentation and publishing framework Spatial Knowledgeware to support ISO and OGC specifications • Host and share metadata search “gateway” software

  19. Discovery Services • FGDC coordinates a network of six official search Gateways for accessing international content held in Z39.50 (ISO 23950) “GEO” Profile collections (includes non-FGDC metadata)

  20. Discovery Services • FGDC operates the GSDI global directory of servers to help selection of servers to target a full, distributed query • NSDI/GSDI Discovery portals use searchable metadata fields, including spatial and temporal, and full text

  21. contains UI UI Metadata UI UI managed through managed through are derived for each managed through Metadata DB/Index Data Catalog Service Service Registry/ Catalog Metadata enter/update is exposed to the Internet through a are loaded to or stored in synchronize API queries may reference instances may be coupled to or integrated with queries for relevant collection targets are derived from API is exposed to the Internet through a Catalog Client may send data to GEOdata Access Service feeds server info to Spatial Data Data/File Management System makes maps from stored in distributes to and collates from multiple Web Mapping Service draws layers from API enhances query with API managed through Gazetteer API Gateway UI enhances query with Geoprocessing Service API Thesaurus provides application access through Symbols 1 2 3 current planned Software/Service 1. builds query screens for 2. submits queries/requests to 3. returns search responses API UI Information interacts with API UI Interface Client now: planned.: Function

  22. Objectives of the Infrastructure • To promote use and re-use of spatial data for multiple purposes by government and citizens • To encourage participation of self-disciplined providers or data and services • To establish baseline services that support community discovery and access to geo-information (directory of services, semantic registry, search gateways, gazetteer, reference software implementation)

  23. E-government: Geospatial OneStop • OMB has established 24 e-government initiatives across the U.S. Government to seek savings of scale by formalizing re-usable G2G services • Geospatial OneStop accelerates implementation of the NSDI by: • Rapid development of Framework schema/standards • Reiterating asset management in Clearinghouse • Establishing G2G needs-based access via the Clearinghouse • Implementing high-grade federal map and data services online for Framework themes

  24. To whom? Who? How? When? Draft process diagram of Geospatial OneStop revised 01Mar02 Call for business requirements of portal Portal Team Review State and E-Gov User Requirements Target 22+ e-gov initiatives and other e-gov Face-to-face Town Hall Discussions Document existing and planned data Service and Data Clearinghouse register Develop consolidated use cases Initial Portal Functional Design Prototype specific G2G functions Establish portal interface to services Augment portal functionality refine Prepare Questions, Organize Extract data requirements Prototype map/data services Finalize map/data services refine e.g. transportation Requirements Team Under ANSI INCITS L1 Standards Teams Compose/ convene 7 MATs Write draft std docs Extract common data requirements Construct Draft Model Construct Draft Standard Vote at ANSI INCITS L1 Vote at ANSI FGDC Endorsement revise Calls for requirements and participation revise Public Review Public Review time (not to scale)

  25. What is the Geospatial One-Stop Portal? • Middleware that integrates access to distributed community data services • Community-wide access point for all participating data and map services • Employs standard software interfaces to connect to catalog, map, and feature services set up by providers • Generic user interface that could be adapted by other communities

  26. Web Browser (Thin Client) Applications (Thick Client) Internet Geospatial One-Stop Portal User Interface Widgets @FGDC Analysis Symbols Help GNIS Gaz WFS WMS WCS Cat Clients Internet Services Data Provider Organizations Portal Concept

  27. Douglas Nebert GSDI Secretariat http://www.gsdi.org U.S. Federal Geographic Data Committee http://www.fgdc.gov ddnebert@fgdc.gov

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