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Topic: Geographic data

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Geographic information system

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	GEO World - Sept 2003 - Looking for Quality Geographic Data? (Site not responding. Last check: 2007-11-01)
		Geographic data should be perfect, and geographic data should be free.
		Data users such as utility and delivery companies are often the first to learn of new streets and addresses.
		Data quality matters, and GIS decision makers can use the six Cs to guide themselves through the complexities of data selection to a worthwhile investment.
	www.geoplace.com /gw/2003/0309_gw/0309dta.asp (1367 words)

	USFWS GIS IMADS Glossary (Site not responding. Last check: 2007-11-01)
		Typically, the extent of the geographic database (or a portion of it defined by a zoomed-in view) defines the map extent for display.
		Once data is selected, additional operations can be performed, such as drawing the features, listing the attributes or summarizing attribute values.
		Once data is selected, additional operations can be performed such as drawing the features, listing their attributes or summarizing attribute values.
	www.fws.gov /data/IMADS/glossary.htm (1535 words)

	Geographic data - Wikipedia, the free encyclopedia
		The geographic data that describes our world allows for city planning, flood prediction and relief, emergency service routing, environmental assessments, wind pattern monitoring and many other applications.
		Geographic data is processed with Geographic information system (GIS) software which can, as one aspect of its functioning, produce maps.
		In the United States, geographic data collected by central government is made available free of copyright for no more than the cost of distribution.
	en.wikipedia.org /wiki/Geographic_data (246 words)

	Florida Geographic Data Library and Map Server
		The Florida Geographic Data Library (FGDL) is a mechanism for distributing spatial (GIS) data throughout the state of Florida.
		The data is organized by county and state.
		Data is available for download free of charge from the FGDL Metadata Explorer or our FTP site.
	www.fgdl.org (178 words)

	Geographic Information Systems (GIS) Poster
		Data capture—putting the information into the system—involves identifying the objects on the map, their absolute location on the Earth's surface, and their spatial relationships.
		An example of data typically held in a vector file would be the property boundaries for a particular housing subdivision.
		Two types of data were combined in a GIS to produce a perspective view of a part of San Mateo County, Calif. The digital elevation model, consisting of surface elevations recorded on a 30-meter horizontal grid, shows high elevations as white and low elevations as fl (fig.
	erg.usgs.gov /isb/pubs/gis_poster (5021 words)

	The Minnesota Geographic Data Clearinghouse
		Each node is an independent data provider that offers detailed descriptions (metadata) of the geographic data it supports.
		Search for data representing conditions before, after, or equal to a certain date, or search a range of dates.
		Location (optional): Identify the geographic area you are interested in by selecting from the menus or drawing on a map.
	geogateway.state.mn.us /documents/index.html (337 words)

	ERTICO.COM :: GDF - Geographic Data Files
		The Geographic Data Files section of the old ERTICO website was originally created by Marcel Konijn (Intergraph) with the financial support of the European Commission in the framework of the ANIMATE project.
		GDF (Geographic Data Files) is a European standard used to describe and transfer road networks and road-related data.
		Data producers will mostly guarantee a certain completeness of their data in combination with the up-to-dateness and accuracy.
	www.ertico.com /en/links/links/gdf_-_geographic_data_files.htm (2974 words)

	Charlevoix County Digital Geographic (GIS) Data Available for Purchase
		Selected digital data sets developed by Charlevoix County's Equalization, Planning, and GIS Departments are available for sale to the public directly.
		The types and formats of the data are typically designed to be used in geographic information systems software or land design software (computer aided drafting, civil design, and modeling related software).
		Data purchased through Charlevoix County may not be resold or redistributed without written authorization from the Charlevoix County Board of Commissioners.
	www.charlevoixcounty.org /gisdata.asp (2285 words)

	National Park Service Geographic Information Systems Data and Information
		The FGDC develops geospatial data standards for implementing the NSDI, in consultation and cooperation with State, local, and tribal governments, the private sector and academic community, and, to the extent feasible, the international community.
		National Spatial Data Infrastructure defined as the technologies, policies, and people necessary to promote sharing of geospatial data throughout all levels of government, the private and non-profit sectors, and the academic community.
		The Interior Geographic Data Committee (IGDC) was formed in 1991 in an effort to update and enhance the Department of Interior's internal spatial data coordination and to provide leadership for the expanding spatial data process in support of the Federal Geographic Data Committee (FGDC).
	www.nps.gov /gis/data_standards (2817 words)

	Commons of Geographic Data -- Welcome
		This site is intended for any data in any format that can be referenced to location on the earth.
		You may legally download and use the data you find without asking the permission of the original data creators.
		Contribute Data (partially functional) - At this link you can readily provide basic information about scientific and technical datasets you have created and that you desire to contribute to the data commons.
	geodatacommons.umaine.edu /index.php (275 words)

	LMIC: Minnesota Geographic Data Clearinghouse, Data
		Minnesota Geographic Data Catalog 2000 (and 2005 updates): Find concise information about GIS data distributed by the Land Management Information Center and other state and federal agencies (note: most of this publication has been replaced by the theme pages listed above).
		A Foundation for Coordinated GIS, Minnesota's Spatial Data Infrastructure: Adopted by the Minnesota Governor's Council on Geographic Information, this is a strategic plan to help Minnesota organizations more effectively achieve their business goals by using GIS, October 20, 2004.
		Guidebook to Priority GIS Data, July 1999: A report by the Governor's Council on Geographic Information that describes the status and availability of 11 key digital data themes.
	www.lmic.state.mn.us /chouse/data.html (448 words)

	Florida Geographic Data Library Data Download (Site not responding. Last check: 2007-11-01)
		The data layers available for download in FGDL may not be the most current version of the data.
		FGDL regularly updates as many of its data layers as we have time for, but with over 350 data layers, it is difficult to update every single data layer as the updated data becomes available.
		When you search the data using the metadata explorer, you are searching the contents of the metadata.
	www.fgdl.org /download (345 words)

	Free GIS Data - GIS Data Depot (Site not responding. Last check: 2007-11-01)
		Data is available in 30m & 90m resolution data tiles.
		They now have more power to exploit geographical information in their day to day activities, including posting maps on websites and in other public information services.
		Data that is particularly troublesome for users is USGS SDTS formatted data.
	www.gisdatadepot.com (855 words)

	Geographic Data Layer Overview - WDNR
		Many geographic data sets in use at the DNR have been developed for a wide range of purposes.
		Many of these data sets are managed in a central DNR GIS Data Repository and are available for sharing with the public without restriction.
		This series of web site pages lists geographic data holdings of the Wisconsin Department of Natural Resources which have statewide coverage and are available for sharing from the DNR Infrastructure and Architecture Section (IAS) without restriction, unless otherwise noted.
	www.dnr.state.wi.us /maps/gis/dataoverview.html (268 words)

	USGS (U.S. Geological Survey) EROS, Sioux Falls, SD
		The original DEM 7.5 minute tiled data available only in Spatial Data Transfer Standard (SDTS) form is available at no cost via downloads from the GeoComm International Corporation at http://gisdatadepot.com/dem and from MapMart.com at http://www.mapmart.com, and from Advanced Topographic Development and Images (ATDI) at http://www.atdi-us.com.
		Data corrections are made in the NED assembly process to minimize, but not eliminate, artifacts, perform edge matching, and fill sliver areas of missing data.
		SDTS Format Data Dictionaries: SDTS DLGs require the use of either the uncompressed SDTS Master Data Dictionary file as a single tar file for 1:2M, 100K, 1:24K or a series of uncompressed small files for 1:2M.
	edc.usgs.gov /geodata (890 words)

	Institute for Geographic Information Science - Data
		SFDDB is a digital database of spatial data related to the cultural and physical geography of San Francisco County, California.
		The goals of the SFDDB were to bring together existing public domain digital data on San Francisco County into a common, user-friendly format for use by university members (students, faculty, staff) and or patrons.
		The DC is dedicated to both aspatial and spatial data as is it pertains to the socials sciences.
	gis.sfsu.edu /data.htm (523 words)

	Locating Geographic Data Files : Training : GIS at MIT
		Now that you have the census data you are looking for you will need a geographic boundary file to attach it to.
		In this case we are looking for a geographic file that is organized by census tract because the census data we downloaded is ordered by census tract.
		All census related geographic boundary files can be found on the web There are several place you can look for this type of data.
	libraries.mit.edu /gis/teach/iap02/findata.html (1494 words)

	Environmental Protection Agency Region 2 GIS Data
		That file includes extracts of data for New York, New Jersey, Puerto Rico and U.S. Virgin Islands facilities regulated by EPA or its state, commonwealth or territorial counterparts.
		Data are provided in both ESRI shapefile (shp) and Google KML format.
		For details on the individual data layers, please consult the individual documentation (metadata) that is included for each layer in text, HTML, and XML format.
	www.epa.gov /region02/gis/data/geographicdata.htm (625 words)

	Downloading Geographic Data
		Data will be delivered in compressed file format (.zip containing shape files).
		Click on the download icon to access the data download window to get the list of the data layers that are available to select and download at the current scale.
		Data layers are clipped to the area displayed in the map view of the application and provided to the user for download in shape file format (compressed in a zip file, go to
	egis.hud.gov /egis/map/help/downloading_geographic_data.htm (173 words)

	The Federal Geographic Data Committee — Federal Geographic Data Committee (Site not responding. Last check: 2007-11-01)
		The Federal Geographic Data Committee — Federal Geographic Data Committee
		The Federal Geographic Data Committee (FGDC) is an interagency committee that promotes the coordinated development, use, sharing, and dissemination of geospatial data on a national basis.
		This nationwide data publishing effort is known as the National Spatial Data Infrastructure (NSDI).
	www.fgdc.gov (239 words)

	USGS: Science Topics: geographic information systems (GIS)
		Chapter on geographic information systems from a Wildlife Society publication with detailed information on geographic information systems, data structure, image processing, data analysis, application to waterfowl management, and data sources.
		The Geospatial Data Clearinghouse is a collection of over 250 spatial data servers, with digital geographic data for use in Geographic Information Systems (GIS), image processing systems, and other modeling software.
		Online map system providing downloadable geospatial data, primarily NSDI framework themes (that is, general geographic data such as transportation, boundaries, hydrography, orthoimagery, land cover, and elevation).
	www.usgs.gov /science/science.php?term=445 (706 words)

	MiGDL - Center for Geographic Information - Geographic Data Library
		The Geographic Data Library catalogs the available GIS data that the State of Michigan provides for Internet access.
		Access to data within the Library is based upon geographic extent and theme type.
		Information provided in the MI Geographic Data Library is accurate to the best of our knowledge and is subject to change on a regular basis, without notice.
	www.mcgi.state.mi.us /mgdl (258 words)

	Geographic Coordinate Data Base (Site not responding. Last check: 2007-11-01)
		The collection, analysis, and management of the data is the responsibility of the Branch of Cadastral Survey.
		Other sources of coordinates may also be used to supplement the data base such as digitizing the location of found corners from various map sources or photographs.
		As geographic coordinates are established for resource boundaries, resource data can be merged with the most current ownership, status, and survey data because all of the necessary informaton is located in the same latitude and longitude or compatible reference system.
	www.blm.gov /ca/pa/cadastral/gcdb.html (571 words)

	Boston College GIS Data - Boston College
		Data from other sources can be imported and integrated into GIS projects if they include geographic componenets.For additional data sources see the Virtual Data Center web page.
		The EDX data is in raster format, ready to use with ESRI software ArcMap 9.0.
		Data and maps of World and U.S. Historic USGS Maps of New England and NY
	www.bc.edu /libraries/centers/virtual/geographic/s-gisdata (224 words)

	Free GIS Data & Imagery GeoBlog
		Many data themes are online in the spatial data library and the library is available to users as a web service (interactive webmap) or a download repository (html).
		The RIGIS mission is to monitor, coordinate, and provide guidance for activities related to the use of geographic information system technology in Rhode Island, to support initiatives to implement or use this technology, and to manage and provide access to a comprehensive database of geographically referenced information.
		The data was created based on the SRTM-30 data set, then holes were filled with GTOPO-30 data and bathymetry from various sources was used to replace the ocean areas.
	gisdata.blogspot.com (2114 words)

	Geographic Data Files - Wikipedia, the free encyclopedia
		Geographic Data Files or GDF is a file format for geographic files.
		It is much more than a generic GIS standard, because GDF gives rules for how to capture the data, how the features, attributes and relations have been defined.
		GDF is a European standard that is used to describe and transfer road networks and road related data.
	en.wikipedia.org /wiki/Geographic_Data_Files (205 words)

	ESRI Data
		A comprehensive set of demographic, consumer expenditure, segmentation, and business data for commercial businesses in real estate, banking, insurance, and retail as well government agencies, for example economic development and public health.
		This data is used in site selection, competitor analysis, customer profiling, as well as strategic planning and forecasting.
		It includes imagery, basemaps, census data, street maps, and a host of geographic information commonly used by GIS practitioners.
	www.esri.com /data (140 words)

	Soil Survey Geographic (SSURGO) Database \| NRCS NCGC
		The SSURGO data were migrated to the Soil Data Mart during 2004.
		The cost is $50 for a single CD-ROM or $100 for a single DVD disk which may contain one or more soil survey areas, depending on file size.
		Completion of the SSURGO data digitizing is scheduled for 2008.
	www.ncgc.nrcs.usda.gov /products/datasets/ssurgo (337 words)

	GIS - U.S. Fish and Wildlife Service
		Biological Data - While not exclusively geospatial, many of these sites contain data that is both biological and geospatial.
		Data Conversion and Utilization Tools - Text documents, Dbase files, and data conversion tools for GIS data including UNIX to PC DLG conversion notes and SDTS conversion tools.
		Much of the data is free or very low-cost; this is a good site if you have a slow modem connection and do not want to spend a lot of time downloading large files.
	www.fws.gov /data (703 words)

	Products - Technology - Geographic Data Modules
		Both GTS and GeoTagger utilize MetaCarta Geographic Data Modules (GDMs), which are knowledge bases utilized to identify and disambiguate geographic references, assign latitude/longitude coordinates, and rank.
		GDMs contain disambiguation data, which is used by NLP techniques to rank candidates.
		For example, population data is useful in determining the confidence that Paris refers to Paris, France or Paris, Texas.
	www.metacarta.com /products/geographic-data-modules.html (304 words)

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