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Presented by Timucin Bakirtas

CREATING, ACCESSING and SHARING SPATIA DATA with NSDI (National Spatial Data Infrastructure) Approach. Presented by Timucin Bakirtas. Outline. What is NSDI ? Strategies to Create NSDI NSDI Components Clearinghouse, Web portal, ArcWeb service Standards Framework & Spatial Data

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Presented by Timucin Bakirtas

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  1. CREATING, ACCESSING and SHARING SPATIA DATAwith NSDI (National Spatial Data Infrastructure) Approach Presented by Timucin Bakirtas

  2. Outline • What is NSDI ? • Strategies to Create NSDI • NSDI Components • Clearinghouse, Web portal, ArcWeb service • Standards • Framework & Spatial Data • Metadata • Partnerships & Organizations • NSDI & GIS in Emergency Management • Summary

  3. WHAT IS NSDI • It is a set of actions and new ways of creating, accessing, sharing and using spatial data. • The technologies, standards, and people necessary to promote sharing of geospatial data through out all levels of government, the private, non profit sector and the academic community • It provides a base structure of practices and relationships among data producers and users that facilitates data sharing. • It is a national initiative lead by a federal agency that partners with state, local, private and academic organizations

  4. TECHNOLOGY POLICIES PEOPLE NSDI is not only … • Clearinghouse • Web Portal • Web Services • Standards • Framework • Metadata • FGDC • NJ Geospatial Forum • GIS Community

  5. WHY NSDI? • CREATING Spatial data: NSDI will standardize the spatial data with its methods and techniques. • ACCESSINGSpatial Data: NSDI will make spatial data readily accessible through the search of metadata • SHARING Spatial Data: Spatial data will be shared among various organizations (Police, Emergency Managers, Planners, Health Officials …), this will prevent the duplication of spatial data

  6. Strategies to Create NSDI STRATEGY I: Conceptual steps • Explain GIS benefits to the Nation and other communities • Include GIS in the curriculum of Universities and other academia • Organize seminars and symposiums where new developments in GIS are addressed. • Exchange GIS technology and ideas through instructional Web sites and online forums

  7. Strategies to Create NSDI STRATEGY II: Logical and physical steps • Form leading committee at the federal level to start this initiative • Involve State, local, and tribal governments in the development and implementation of this initiative • Utilize the expertise of academia, the private sector, professional societies, and others as necessary to aide in the development and implementation of NSDI • Physically develop, implement NSDI and its components.

  8. NSDI COMPONENTS WEB PORTAL GIS DATA SERVERS CLEARINGHOUSE METADATA FRAMEWORK SPATIAL DATA STANDARDS PARTNERSHIPS & ORGANIZATIONS Technology Policies People

  9. CLEARINGHOUSE (SEARCH SERVER) • It is a place where metadata reside. • Metadata owners have to register as provider of data and services. • It is a search and discovery mechanism for spatial data • It should adopt a search protocol in order to make a attribute search for metadata

  10. WHAT IS Z39.50 SEARCH PROTOCOL • It is used for searching and retrieving full-text documents, bibliographic data, images and multimedia in a distributed network environment • The FGDC has developed a Z39.50 application profile for geospatial metadata, called GEO • Z39.50/GEO identifies a set of base standards, together with appropriate options and parameters necessary to accomplish identified functions • The Z39.50 GEO Profile Search Protocol is a TCP/IP socket-based protocol, and as such, does not require a web server to be installed

  11. The phone and email are communication protocols, • The languages (French and Italian) are communication profiles. • 1. The user sends a question to the Web Portal in HTTP/HTML, • 2. The Web Portal translates it to Z39.50/GEO and • 3. Sends it to the search server. • 4. The search server responds in Z39.50/GEO to the Web Portal, • 5. Web Portal translates it to HTTP/HTML. • 6. Sends it to user • The HTTP and Z39.50 are the communication protocols, GEO and HTML are communication profiles (or languages) 3 1 4 (Search Server) (User) 6 2 5 (Web Portal) SEARCH AND RETRIEVE MECHANISM

  12. GIS Web Portal GATEWAY HARVESTING USER WEB SERVER CLEARINGHOUSE METADATA Z39.50 PUBLISH METADTA PUBLISH METADATA FTP GIS Server 1 GIS Server 3 GIS Server 2

  13. Expand channels to various communities for collaboration, sharing and networking • Create an interactive marketplace for cost sharing WEB PORTAL TECHNOLOGY • Search, integrate and view GIS data from different sources (data, applications, web sites) Source: 2005 ESRI Federal User Conference

  14. MAP VIEWER • Browser based map viewer that can be integrated with data services from different data sources • Fusing multiple map services into a single map • Map Navigation • Selection Queries • User - friendly and self-explanatory. Source: 2005 ESRI Federal User Conference

  15. Web Browser (Thin Client) Gazetteer PlaceNames &Attributes Geospatial Web Services @ providerorganizations Framework Data WEB PORTAL ARCHITECTURE GIS Software (Thick Client) @ users Web Portal Catalog @ portalhost site Data & ServiceMetadata WFS WMS WCS Clients Legend: Features Coverages Maps

  16. STANDARDS • Standardization is the process of getting people to agree on acceptable technical solutions to common problems. • ISO (International Standard Organization) • FGDC ( Federal Geographic Data Committee) • OGC (Open GIS Consortium) • NSDI does not only adopt ISO, FGDC and OGC standards but encompasses a broader range of standards including : • HTTP(Hypertext Transportation Protocol), • W3 (World Wide Web Consortium) Standards. • SOAP(Simple Object Access Protocol), • WSDL (Web Services Description Language) and • UDDI (Universal Description Discovery and Integration)

  17. STANDARDS Cont… • Technical Committee 211 (ISO/TC 211) is responsible for geospatial data, administration, information management and geospatial services standards. • FGDC develops geospatial data standards for NSDI , invites comments from all interested parties in drafting data standards. • OGC would agree on open interfaces for network interoperability of geospatial systems; it plays a big role in the development of GIS technology.

  18. NSDI STANDARDS ISO ISO Technical Committee (TC) 211 ISO/TC 211 – Joint Advisory Group (JAG) National Standards Institute (NSI) Information Technology Standard Committee (ITSC) Consortia and Academia SOAP W3C HTTP WSDL GML UDDI Open Geospatial Consortium (OGS) NDSI Standards

  19. FRAMEWORK DATA 1.Hydrology: Lakes, River, Streams, Channels 2.Cadastral: Parcel, Land use, Zoning 3.Transportation: Roads, rails, 4.Elevation: Contour lines, spot elevation 5.Administrative Boundaries: Town ,County, State lines 6.Geodetic Control Points: Reference points 7.Orthoimagery:Referenced orhtophotos and aerials

  20. DATA STANDARDS • The purpose of spatial data standards is to facilitate data sharing and increase interoperability among automated geospatial information systems. • Data formats/types • Data model • Data category • Data quality ( how accurate, how consistent) • Spatial Coordinate Reference • Common features • Attributes • Relationships

  21. METADATA • Metadata is as important as data, because it tells you about data and services and how to access to it. • Describes data in at least 3 categories: • Criteria in how to find data by asking questions such as who, what, when and how. • Criteria that will show the purpose of data • Criteria in how to access data • Metadata will eliminate the duplication of spatial data • Metadata will reduce the cost of data creation and time • Metadata will tell the current ness of data

  22. CATALOG DATA MODELS MODELS Metadata DATA SETS MAPS METADATA STANDARTS • ISO 19115:2003 defines • The schema required for describing geographic information and services. • It provides information about • The identification, • The extent, • The quality, • Spatial reference, • Distribution of digital geographic data.

  23. EMERGENCY MANAGEMENT with NSDI and GIS Approach

  24. NSDI & GIS Approach in Emergency Management • Because of its visual and spatial functionality, GIS technology provides better and faster statistical analyses for decision makers (emergency managers) • HOW BIG is the hazard area • HOW MANY people live in the hazard zone • WHICH facilities outside the hazard zone maybe used as shelters? • WHICH evacuation roads should displaced residents use? • WHAT are the best roads the hospitals outside of the hazard zone? • WHERE are the areas and the buildings with the most damage? • WHICH roads are damaged or blocked by debris?

  25. Newport-Inglewood fault, Located in the southwestern Los Angeles basin and capable of producing earthquakes in the range of 6.3 to 7.5 magnitude In this scenario EM use NSDI approach to get layers , in common coordinate system, create maps and perform critical analyses

  26. Earthquake with a magnitude of 5.4 – 6.9 will affect the area shown ( this area is referred to as the CRITICAL ZONE) The CRITICAL ZONE is approximately 75 Km to the north, 75 Km to the south and 45 Km to the east

  27. Population and number of households within the CRITICAL ZONE 12,311,763

  28. Update information at site Schools can be designated as Potential Shelters in the CRITICAL ZONE( Address location & Capacities) SHELTER CAPACITY=?

  29. Roads can be identified and traffic flow can be organized in CRITICAL ZONE. Location Based Server (LBS) technology, SMS can be sent to mobile users to redirect them to designated shelters or hospital locations

  30. SUMMARY • With NSDI, social, economic and critical decisions will be taken with the benefit of the best available spatial information. • With NSDI, Country will understand the necessary steps to create, access and share spatial data, • NSDI will make the user community aware of the importance of spatial data • NSDI will eliminate the duplication of spatial data that will cut the cost and time • NSDI will make spatial data accessible from a central portal and will make information readily accessible • Through NSDI, countries can become an integral partner in the world‘s GIS community

  31. Open to Questions

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