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Topic: Geographic Data Files

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Geography Markup Language

	Appendix A: Terminology — Federal Geographic Data Committee
		For the framework, it is to be certified that data comply with framework standards and are suitable for inclusion in the framework.
		These data include an encoding of the geographic extent of the features and a minimal number of attributes needed to identify and describe the features.
		Thus, the data for the clearinghouse are located at the sites of data producers (or, where more efficient, at the sites of intermediaries) throughout the country.
	www.fgdc.gov /framework/handbook/appendixA (2292 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)

	Locating Geographic Data Files : Training : GIS at MIT
		After opening the file you determine that it does contain the information that you are looking for, but in order to read this file in a GIS system it will need to be a.dbf file.
		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.
		Double-click on the census file in the Legend.
	libraries.mit.edu /gis/teach/iap02/findata.html (1494 words)

	NC Water/Sewer Geographic Data Content Standard (Site not responding. Last check: 2007-10-14)
		Many are now beginning to use GIS data to help maintain future safe drinking water supplies and to develop environmentally responsible waste treatment plans in hopes to spur or ensure continued economic growth in their communities.
		The objective of this effort is to develop a geographic data content standard for use in the development of a statewide geographic dataset for water distribution and sanitary sewer systems in rural North Carolina.
		This geographic data content standard is intended to be the basis for the development of a statewide data layer, as a component of the North Carolina Corporate Geographic Database, for water distribution and sanitary sewer systems.
	www.cgia.state.nc.us /gicc/standards/watsew.html (7249 words)

	Safe Software \| Geographic Data Files (GDF)
		GDF is both a format and a data schema.
		The end user GDF application often dictates how complex the resulting GDF file needs to be (addressable areas, Level 2 relationships, sections, etc.).
		In conclusion, to write GDF data you need a good understanding of FME, the GDF format, the GDF schema, your source data schema, and the proposed usage of the GDF dataset.
	www.safe.com /services/formats/gdf.php (749 words)

	Metadata: Geographic Names Information System (USGS) for the Lake Superior Basin in GIS Format (Site not responding. Last check: 2007-10-14)
		After this data was assembled, it was clipped with the 50 km buffered basin boundary, and then split into counties on the US side.
		In the case of an areal feature, the primary data point is the one determined subjectively to be at the center of the feature, or the one describing the location of a prominent feature within an area, such as the town hall in a town.
		Data was then clipped with the 50 km lake superior basin boundary, and split into county coverages for the US side.
	oden.nrri.umn.edu /lsgis/metadata/gnis.htm (1170 words)

	OHIR > Death Data Files
		These files have a consistent record layout over all the years and are intended to facilitate long-term trend analysis and to simplify computer programming.
		These files were created by the National Center for Health Statistics and include underlying, immediate, intermediate, and contributing causes of death and demographic data.
		The data files are coded as follows: 1960 to 1968 uses ICD-7, 1969 to 1978 used ICD-8, 1979 to 1998 uses ICD-9, and 1999 to present uses ICD-10.
	www.dhs.ca.gov /hisp/chs/OHIR/products/deathfiles.htm (807 words)

	USGS_DEM (Site not responding. Last check: 2007-10-14)
		These digital cartographic/geographic data files are produced by the U.S. Geological Survey (USGS) as part of the National Mapping Program and are sold in 7.5-minute, 15-minute, 2-arc-second (also known as 30-minute), and 1-degree units.
		Data availability for the contiguous United States may be viewed on a status coverage map.
		DEM data of low-relief terrain or generated from contour maps with intervals of 10 feet or less are recorded in feet while DEM data of moderate to high-relief terrain or generated from maps with terrain contour intervals greater than 10 feet are generally recorded in meters.
	www.inforain.org /siuslaw/data_cd/metadata/DEM10.htm (3578 words)

	Census 2000 Geographic Products and Information
		Through the Decennial Census, the Census Bureau reports data for a wide variety of geographic areas, ranging from the entire United States down to a census block.
		They range from maps showing the locations and boundaries of the smallest geographic entities for which the Census Bureau tabulates data, such as the Census 2000 Centers of Population map series, census tract and census block maps, to maps displaying Census 2000 results at the state and national levels.
		Changes were made to several geographic entities for which the Census Bureau tabulated data from Census 2000.
	www.census.gov /geo/www/geo2000.html (428 words)

	Data Description Page (Site not responding. Last check: 2007-10-14)
		The acreage data used to calculate county-level pesticide use are based on the 1987 and 1992 Census of Agriculture.
		The resultant geographic data files were then provided to the National Coastal Assessments (NCA) team of the Special Projects Office (SPO) of the National Ocean Service (NOS) in GIS GRASS format.
		The nationwide ELMR database includes data for 153 species found in 122 estuaries and coastal embayments and is organized by species, life stage, estuary, salinity zone, and month.
	spo.nos.noaa.gov /projects/cads/data_description.html (2250 words)

	Census 2000 Data
		Data is available down to the block level and includes information for zip codes and congressional districts.
		Data is available for the state, state legislative districts, counties, and lower geographic levels down to the block level.
		Data is presented at the state, county and municipal level.
	pasdc.hbg.psu.edu /pasdc/census_2000/index.html (1150 words)

	DTD DataAccess - Main
		Listings, calculators, GIS shape files, maps and database files are provided to access data that are used and maintained by CDOT.
		Select the category containing data of interest from the list on the right and you will be presented with additional options and explanations.
		Data provided are the most current available and are provided "as is" with the understanding that they are not guaranteed to be correct or complete, and conclusions drawn from the data are the sole responsibility of the user.
	www.dot.state.co.us /app_dtd_dataaccess/index.cfm (166 words)

	Good ArcView Habits
		When you open an ArcView Project file that has links to data files that have been moved since it was saved you will have to "tell" ArcView where you have moved every file.
		ArcView will prompt you with a window asking where the file it can not find is located, it will even tell you the feature type of the file it is looking for, as well as the location where it used to be.
		If any of the data you will reference in your project are on networked drives (such as your home account or the GEO directory) be consistent in the drive letters that you assign to them each time you attach them.
	www.ncsu.edu /scilink/studysite/help_files/good_habits.htm (1879 words)

	Metadata: Geographic Names Information System (USGS) for Minnesota in GIS Format
		You should consult available data documentation (metadata) for these particular data to determine their limitations and the precision to which they depict distance, direction, location or other geographic characteristics.
		No Warranty: These data are provided as is, without any warranty whatsoever, including but not limited to any warranty as to their performance, merchantability, or fitness for any particular purpose.
		If you transmit or provide these data in any form to another user, the data MUST be accompanied by a copy of this disclaimer and all documentation provided with the original data set including the full metadata record.
	www.lmic.state.mn.us /chouse/metadata/gnis.html (1632 words)

	Epidemiology Data for Michigan
		National, state and county data for 1989, 1993, and 1995-99 on people in poverty, people under 18 in poverty, children 5-17 in families in poverty, and median household income.
		Eight of the files are PC-SAS 6.12 data sets that are subsets of the Michigan Hospital Discharge Survey, described in the 'data set dict.doc' file in the epid552 directory.
		Data was aggregated for 1990-94 in the latest report to improve accuracy.
	www.lib.umich.edu /govdocs/epidem03.html (4389 words)

	WriteGDF Home page, GDF 3.0 translator, View GDF, Create GDF files, Write GDF, in-car navigation, vehicle tracking, ...
		GDF means Geographic Data Files, It is a standard data exchange format and a data model (a complex data model).
		The Geographic Data Files (GDF) are used to model road network data for navigation purposes.
		The GDF Viewer is still in development and there is a long way to go to be able to handle all complexities of GDF data modelling.
	www.4d-technologies.com /writegdf (491 words)

	Census of Canada, 2001: geographic reference files
		The census tract conversion file provides a correlation table between 1996 census tracts (CTs) and 2001 census tracts, including a flag indicating whether each 1996 CT is wholy or partially contained in the 2001 CT.
		The enumeration area correspondence file provides a correlation table between 1996 census enumeration areas (EAs) and 2001 census dissemination areas (DAs), including a flag indicating whether each 1996 EA is wholy or partially contained in the 2001 dissemination area.
		The file was conceived as a tool for use with administrative files containing postal codes.
	www.chass.utoronto.ca /datalib/cc01/georef01.htm (1122 words)

	Geographic Coordinate Data Base
		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.
		These files are used for analysis of the data during processing.
	www.blm.gov /ca/pa/cadastral/gcdb.html (571 words)

	Changing Neighborhoods: Ann Arbor Census Data, 1980-2000
		Although there is data for race and ancestry, there are no breakdowns by race and ancestry.
		Summary File 1 data on DVD permits users to download large geographies (all census tracts in state, all blocks in city) and to create new tables with individual components of the Factfinder tables (e.g.
		The Summary File 3 data is expected by December 2002.
	www.lib.umich.edu /govdocs/sw650.html (2175 words)

	Scale, Generalization, and Limitations of the Cartographic Boundary Files
		The cartographic boundary files are primarily designed for small scale, thematic mapping applications at a target scale range of 1:500,000 to 1:5,000,000.
		The cartographic boundary files are a generalized extract from the U.S. Census Bureau's TIGER database.
		These generalized cartographic boundary files are originally produced to support the spatial geographic infrastructure for certain mapping functions within the Census Bureau's American Fact Finder and in support of the LandView Geographic Data Viewer.
	txsdc.utsa.edu /txdata/shapefiles/cbf_desc.php (333 words)

	Integrating School District Geographic and Subject Matter Data (Site not responding. Last check: 2007-10-14)
		Demographic data files must be acquired separately and the associated with the maps files.
		The demographic profile datasets have been structured as four files so that they correspond to files and naming conventions used by the Census Bureau for other types of geographic areas (Census nor any other agency has developed the demographic profile summaries for school districts).
		The three files generated are now used to overwrite and replace the original version of the school district shapefile dbfs.
	www.proximityone.com /dbmergesd.htm (933 words)

	WebGIS - Free Terrain Data - Geographic Information Systems Resource - GIS
		The 7.5-min USGS DEMs are the corrected files produced by the USGS to correct positional errors that existed in previous DEMs produced prior to 2001.
		The 1-Degree DEM (3- by 3-arc-second data spacing) provides coverage in 1- by 1-degree blocks for all of the contiguous United States, Hawaii, and limited portions of Alaska.
		DEM data for 7.5-minute units correspond to the USGS 7.5-minute topographic quadrangle map series for all of the United States and its territories except Alaska.
	www.webgis.com /terraindata.html (290 words)

	Census of Canada, 1996: geographic files
		The Block face data files provide attribute information for a total of 827,933 block faces in 43 large urban centres (those for which SNF coverage is available).
		The enumeration area correspondence file provides a correlation table between 1991 census enumeration areas (Eas) and 1996 census enumeration areas, including a flag indicating whether each 1991 EA is partially or completely affected by 1996 census boundary changes.
		This file can be used in combination with the PCCF to identify those postal code to enumeration area links confirmed by census reported postal code data.
	www.chass.utoronto.ca /datalib/cc96/georef96.htm (1082 words)

	ArcGIS Software at SJSU
		ArcCatalog is the data management tool, used to organize geographic data files.
		ArcToolbox is a set of geoprocessing tools to convert data formats, project geographic data sets, and to perform spatial analyses.
		ArcEditor provides the ability to edit geographic data files, in addition to basic mapping functionality provided by ArcView.
	www2.sjsu.edu /depts/geography/gis/ArcGIS.htm (278 words)

	Geographic Mapping Data (Site not responding. Last check: 2007-10-14)
		The attribute and spatial databases are interconnected through the use of common data elements in both databases, thereby creating the spatial datasets.
		The data in the mapping files are made up of straight-line segments.
		This file is based on the OCS Marine Survey Group Official Protraction Diagram (OPD).
	www.gomr.mms.gov /homepg/pubinfo/repcat/arcinfo/index.html (677 words)

	FDEP - Bureau of Beaches and Coastal Systems - GIS Data (Site not responding. Last check: 2007-10-14)
		Geographic Information Systems (GIS) data is a collection of ArcView Shapefiles data generated by the Bureau of Beaches and Coastal Systems.
		The datum for all files is NAD83-90, projected in Geographic, in decimal degrees.
		The metatdata is compliant with standards set forth by the Federal Geographic Data Committee.
	www.dep.state.fl.us /beaches/data/gis-data.htm (442 words)

	[No title]
		ArcMap is another GIS program that permits the user to produce and modify maps using spatial and non-spatial data files.
		While both maps and layers organize and display data, layers are a subset of maps whose dual functions are to describe how geospatial data are created in the map and to act as “shortcuts” to the locations of the data (p.
		Coverages and shapefiles use the georelational data model while geodatabases utilize the geodatabase model (pp.
	www.csun.edu /~rm53798/Lab_2/lab2.htm (262 words)

	RIGZONE - Oil & Gas Directory - Mapping & Geographic Data
		To ensure that fundamental geographic information is available for the benefit of the Australian community.
		Specialize in data gathering and regulatory services, from researching production records to offering permit walk through services, with an emphasis on environmental information.
		Data management, interactive graphics, web creative services, Geographic Information Systems, litigation support, and many other technology solutions for petroleum, environmental, mining, and other earth science and industrial companies.
	www.rigzone.com /search/c/news/mapping_geographic_data (1095 words)

	GIS Data Sources by Geographic Region
		One of the goals for the Lake Rim GIS is to facilitate public access to and analysis of environmental data for Indiana's coastal region.
		Provincial data is summarized to 48,000 aggregation units (consistent with provincial mapsheets), and stored in a relational database management system and a GIS (CanFI).
		This page lists geographic data holdings of the Wisconsin Department of Natural Resources which have statewide coverage and are available for sharing from the DNR Geographic Services Section (DNR/GEO) without restriction, unless otherwise noted.
	www.great-lakes.net /gis/data/geographic.html (1174 words)

	GCDB National Home Page (Site not responding. Last check: 2007-10-14)
		The survey boundaries are delineated by computing the geographic positions of township, section, aliquot part, government lot, and special survey corners.
		GCDB data has been collected for approximately three quarters of the townships in the Western United States.
		GCDB data is available over the Internet from the Land Survey Information System (LSIS) as live streaming data or as downloadable ArcInfo shape files and original flat files.
	www.blm.gov /gcdb (286 words)

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