Cartographic Boundary File General Metadata in FGDC Format Metadata Section Index Identification Data Quality Spatial Data Organization Spatial Reference Entity and Attribute Distribution Metadata Reference Identification Information Citation: Citation Information: Originator: U.S. Department of Commerce, Bureau of the Census, Geography Division Publication Date: 19990119 Title: Boundary File Web Site Metadata Publication Information: Publication Place: Washington, D.C. Publisher: U.S. Department of Commerce, Bureau of the Census, Geography Division Online Linkage: http://www.census.gov/geo/www/cob/index.html Description: Abstract: These cartographic boundary files files were designed and created to support the Landview (TM) small-scale thematic mapping functions. They are provided "as is" for use by the general public and are designed for use in a Geographic Information System or similar mapping system. Purpose: Providing access to boundary file metadata on the Census Bureau's Internet site Supplemental Information: The cartographic boundary files are available in three file formats: ARC/INFO Export (.e00) format Arcview Shapefile format ARC/INFO Generate (ASCII) format Time Period of Content: Currentness Reference: publication date Status: Progress: In Work Maintenance and Update Frequency: As needed Spatial Domain: Bounding Coordinates: West Bounding Coordinate: 172.46087 East Bounding Coordinate: -65.2215271 North Bounding Coordinate: 71.34294128 South Bounding Coordinate: 17.88511467 Data Set G-Polygon: Data Set G-Polygon Outer G-Ring: Data Set G-Polygon Exclusion G-Ring: Keywords: Theme: Theme Keyword Thesaurus: Boundary Files Theme Keyword: Boundary Files Theme Keyword: Spatial Metadata Theme Keyword: US Bureau of the Census Access Constraints: None Use Constraints: None Point of Contact: Contact Information: Contact Person Primary: Contact Person: Department of Commerce, US Bureau of the Census, Geography Division Browse Graphic: Browse Graphic File Name: Boundary_File_Metadata_Graphic Browse Graphic File Description: US_Map Browse Graphic File Type: JPEG Data Set Credit: Department of Commerce, US Bureau of the Census, Geography Division Security Information: Security Classification System: None Security Classification: Unclassified Security Handling Description: Unclassified Native Data Set Environment: TIGER database converted to ARC/INFO coverages, Arcview Shapefiles, and ARC/INFO generate files (ASCII) Cross Reference: Citation Information: Originator: U.S. Department of Commerce, Bureau of the Census, Geography Division Publication Date: 19990119 Title: Boundary File Web Site Metadata Publication Information: Publication Place: Washington, D.C. Publisher: U.S. Department of Commerce, Bureau of the Census, Geography Division Online Linkage: http://www.census.gov/geo/www/cob/index.html Data Quality Information Attribute Accuracy: Attribute Accuracy Report: Accurate against Federal Information Processing Standards (FIPS), FIPS Publication 6-4, and FIPS-55 at the 100% level for the codes and base names. The remaining attribute information has been examined but has not been fully tested for accuracy. Logical Consistency Report: The feature network of lines (as represented by Record Types 1 and 2) is complete for census purposes. Spatial objects in TIGER/Line belong to the "Geometry and Topology" (GT) class objects in the "Spatial DataTransfer Standard" (SDTS) FIPS Publication 173 and are topologically valid. Node/geometry and topology (GT)-polygon/chain relationships are collected or generated to satisfy topological edit requirements. These requirements include: * Complete chains must begin and end at nodes. * Complete chains must connect to each other at nodes. * Complete chains do not extend through nodes. * Left and right GT-polygons are defined for each complete chain element and are consistent throughout the extract process. * The chains representing the limits of the files are free of gaps. The Census Bureau performed automated tests to ensure logical consistency and limits of files. All polygons are tested for closure. The Census Bureau uses its internally developed Geographic Update System to enhance and modify spatial and attribute data in the Census TIGER data base. Standard geographic codes, such as FIPS codes for states, counties, performed spatial data tests for logical consistency of the codes during the compilation of the original Census TIGER data files. Most of the Codes themselves were provided to the Census Bureau by the USGS, the agency responsible for maintaining FIPS 55. Feature attribute information has been examined but has not been fully tested for consistency. Completeness Report: Data completeness reflects the contents of the Census TIGER data base as of January 1, 1990. After the boundary files were extracted, they underwent generalization in the Arc/Info environment. The generalization factor is not known for the boundaries. Positional Accuracy: Horizontal Positional Accuracy: Horizontal Positional Accuracy Report: The information present in these files provided for the purposes of statistical analysis and census operations only. Coordinates in the TIGER/Line files have six implied decimal places, but the positional accuracy of these coordinates is not as great as the six decimal places suggest. The positional accuracy varies with the source material used, but generally the information is no better than the established national map Accuracy standards for 1:100,000-scale maps from the U.S. Geological Survey (USGS); thus it is NOT suitable for high-precision measurement applications such as engineering problems, property transfers, or other uses that might require highly accurate measurements of the earth's surface. The USGS 1;100,000-scale maps met national map accuracy standards and use coordinates defined by the North American Datum, 1983. For the contiguous 48 States, the cartographic fidelity of most of the 1997 Tiger/Line files, in areas outside the 1980 census Geographic Base File/Dual Independent map Encoding (GBF/DIME) file coverage and selected other large metropolitan areas, compare favorable with the USGS 1:100,000-scale maps. The Census Bureau cannot specify the accuracy of features inside of what was the 1980 GBF/DIME-File coverage or selected metropolitan areas. The Census Bureau added updates to the TIGER/Line files that enumerators annotated on map sheets prepared from the Census TIGER data base as they attempted to traverse every street feature shown on the 1990 census map sheets; the Bureau also made other corrections from updated map sheets supplied by local participants for Census Bureau programs. The locational accuracy of these updates is of unknown quality. In addition to the Federal, State, and local resources, portions of the files may contain information obtained in part from maps and other materials prepared by private companies. Despite the fact the TIGER/Line data is not as high as the coordinate values imply, the six-decimal place precision is useful when producing maps. The precision allows features that are next to each other on the ground to be placed in the correct position, on the map, relative to each other, without overlap. Lineage: Source Information: Source Citation: Citation Information: Originator: U.S. Department of Commerce, Bureau of the Census, Geography Division Publication Date: 19990119 Title: Boundary File Web Site Metadata Publication Information: Publication Place: Washington, D.C. Publisher: U.S. Department of Commerce, Bureau of the Census, Geography Division Online Linkage: http://www.census.gov/geo/www/cob/index.html Source Scale Denominator: 5000000 Type of Source Media: paper Source Time Period of Content: Time Period Information: Single Date/Time: Calendar Date: January 1, 1990 Source Citation Abbreviation: TIGER Source Contribution: Selected geographic and cartographic information (line segments) from the Census TIGER data base. Process Step: Process Description: The TIGER/Line files are extracted from the Census TIGER data base by county or statistical equivalent area using software (TIGER DB routines) written by the Geography Division for efficient access. Source Used Citation Abbreviation: TIGER Process Date: 1990-1999 Source Produced Citation Abbreviation: TIGER Process Contact: Contact Information: Contact Person Primary: Contact Person: Department of Commerce, US Bureau of the Census, Geography Division Spatial Data Organization Information Spatial Reference Information Horizontal Coordinate System Definition: Distribution Information Distributor: Contact Information: Contact Person Primary: Contact Person: Department of Commerce, US Bureau of the Census, Geography Division Metadata Reference Information Metadata Date: 01-19-99 Metadata Contact: Contact Information: Contact Person Primary: Contact Person: Department of Commerce, US Bureau of the Census, Geography Division Metadata Standard Name: FGDC Content Standards for Digital Geospatial Metadata Metadata Access Constraints: None Metadata Use Constraints: None Metadata Security Information: Metadata Security Classification System: Unclassified Metadata Security Classification: Unclassified Metadata Security Handling Description: None