Lecture15

Lecture15 - What is the NSDI? . . .the technology,...

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1 Analytical and Computer Cartography Lecture 15: The NSDI and a Digital Earth NSDI What is the NSDI? What is the NSDI? “. . .the technology, policies, standards, and human resources necessary to acquire, process, store, distribute, and improve the utilization of geospatial data.” NSDI ± Organizations and individuals cooperating ± Using electronic technology to help find and share geographic information ± Following mutually accepted standards ± Developing common base themes of data What is the NSDI? What is the NSDI? Geospatial Data Some Examples Field Measurements Maps Remotely-sensed Images Spatially-referenced Data
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2 NSDI But . . . ± Data are hard to find ± Data are difficult to access ± Data are hard to integrate ± Data are not current ± Data are undocumented ± Data are incomplete NSDI The vision of NSDI Current and accurate geospatial data will be readily available to contribute locally, nationally, and globally to economic growth, environmental quality and stability, and social progress NSDI The data provides a core. .. The data provides a core. .. Geospatial Data Geospatial Data NSDI Categories of Geospatial Data Categories of Geospatial Data • Community-developed data sets usually derived for a single purpose but made available for potential re-use • Data sets developed to a common content specification for high re-use potential. These are known as “Framework” data.
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3 NSDI GEOdata GEOdata Framework Framework Categories of Geospatial Data Categories of Geospatial Data NSDI Framework provides. . Framework provides. . . ± a foundation to which spatial information and attributes can be added. ± a base on which other themes of data can be compiled. ± context to orient and link the results of analyses to the landscape Digital orthoimagery Elevation and bathymetry Boundaries Railroads Geodetic Federal State Local Private Utilities Spatial Analysis Base for Other Data Finished Maps Roads Cadastral Hydrography Framework Data Framework Data NSDI GEOdata GEOdata Framework Framework Metadata Metadata Describing your data. .. Describing your data. ..
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4 NSDI The uses of metadata The uses of metadata ± Provides documentation of existing internal geospatial data resources within an organization (inventory) ± Permits structured search and comparison of held spatial data by others (advertising) ± Provides end-users with adequate information to take the data and use it in an appropriate context (liability) NSDI GEOdata GEOdata Framework Framework Metadata Metadata Making data discoverable. .. Clearinghouse (catalog) Clearinghouse (catalog) NSDI Clearinghouse provides. .. Clearinghouse provides. .. ± Discovery of spatial data ± Distributed search worldwide ± Uniform interface for spatial data searches ± Advertising for your data holdings NSDI GEOdata GEOdata Framework Framework Metadata Metadata Clearinghouse (catalog) Clearinghouse (catalog) Standards Standards Consistent approaches. ..
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5 NSDI Partners in FGDC ± 15 Federal Agencies within the U.S.
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Lecture15 - What is the NSDI? . . .the technology,...

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