Identification_Information:
Citation:
Citation_Information:
Originator:
U.S. Department of Commerce
U.S. Census Bureau
Geography Division
Publication_Date: 2002
Title: TIGER/Line Files, UA Census 2000
Edition: UA Census 2000
Series_Information:
Series_Name: TIGER/Line Files
Issue_Identification: Version (MMYY) represents the month and year
file created
Publication_Information:
Publication_Place: Washington, DC
Publisher:
U.S. Department of Commerce
U.S. Census Bureau
Geography Division
Description: This dataset contains only the TIGER 2000 road network.
Abstract:
TIGER, TIGER/Line, and Census TIGER are registered trademarks of the
U.S. Census Bureau. ZCTA is a trademark of the U.S. Census Bureau.
The UA Census 2000 TIGER/Line files are an extract of selected
geographic and cartographic information from the Census TIGER database.
The geographic coverage for a single TIGER/Line file is a county or
statistical equivalent entity, with the coverage area based on January
1, 2000 legal boundaries. A complete set of UA Census 2000 TIGER/Line
files includes all counties and statistically equivalent entities in
the United States, Puerto Rico, and the Island Areas as of January 1,
2000. The UA Census 2000 TIGER/Line files do not include a file for
Broomfield County, CO which became effective November 15, 2001. The
Census TIGER database represents a seamless national file with no
overlaps or gaps between parts. However, each county-based TIGER/Line
file is designed to stand alone as an independent data set or the files
can be combined to cover the whole Nation. The UA Census 2000
TIGER/Line files consist of line segments representing physical
features and governmental and statistical boundaries. The boundary
information in the TIGER/Line files are for statistical data
collection and tabulation purposes only; their depiction and
designation for statistical purposes does not constitute a
determination of jurisditional authority or rights of ownership or
entitlement. The files contain information distributed over a series
of record types for the spatial objects of a county. There are 17
record types, including the basic data record, the shape coordinate
points, and geographic codes that can be used with appropriate software
to prepare maps. Other geographic information contained in the files
includes attributes such as feature identifiers/census feature
class codes (CFCC) used to differentiate feature types, address
ranges and ZIP Codes, codes for legal and statistical entities,
latitude/longitude coordinates of linear and point features,
landmark point features, area landmarks, key geographic features,
and area boundaries. The UA Census 2000 TIGER/Line data dictionary
contains a complete list of all the fields in the 17 record types.
Purpose:
In order for others to use the information in the Census TIGER
database in a geographic information system (GIS) or for other
geographic applications, the Census Bureau releases to the public
extracts of the database in the form of TIGER/Line files. Various
versions of the TIGER/Line files have been released; previous
versions include the 1990 Census TIGER/Line files, the 1992
TIGER/Line files, the 1994 TIGER/Line files, the 1995 TIGER/Line
files, the 1997 TIGER/Line files, the 1998 TIGER/Line files, the
1999 TIGER/Line files, the Redistricting Census 2000 TIGER/Line
files, and the Census 2000 TIGER/Line files.
Supplemental_Information:
To find out more about TIGER/Line files and other Census TIGER
database derived data sets visit http://www.census.gov/geo/www/tiger.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2000
Currentness_Reference: 2000
Status:
Progress: Complete
Maintenance_and_Update_Frequency:
TIGER/Line files are extracted from the Census TIGER database when
needed for geographic programs required to support the census and
survey programs of the U.S. Census Bureau. No changes or updates
will be made to the UA Census 2000 TIGER/Line files. Future releases
of TIGER/Line files will reflect updates made to the Census TIGER
database and will be released under a version numbering system
based on the month and year the data is extracted.
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -97.466753
East_Bounding_Coordinate: -96.252630
North_Bounding_Coordinate: 34.794715
South_Bounding_Coordinate: 34.149058
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Line Feature
Theme_Keyword: Feature Identifier
Theme_Keyword: Census Feature Class Code (CFCC)
Theme_Keyword: Address Range
Theme_Keyword: Geographic Entity
Theme_Keyword: Point/Node
Theme_Keyword: Landmark Feature
Theme_Keyword: Political Boundary
Theme_Keyword: Statistical Boundary
Theme_Keyword: Legal Entity
Theme_Keyword: Statistical Entity
Theme_Keyword: Polygon
Theme_Keyword: County and Statistical Equivalents
Theme_Keyword: TIGER/Line
Theme_Keyword: Topology
Theme_Keyword: Street Centerline
Theme_Keyword: Latitude/Longitude
Theme_Keyword: ZCTA
Theme_Keyword: ZIP Code Tabulation Area
Theme_Keyword: Urban Areas
Theme_Keyword: Urbanized Areas
Theme_Keyword: Vector
Theme_Keyword: TIGER/Line Identification Number (TLID)
Theme_Keyword: Street Segment
Theme_Keyword: Coordinate
Theme_Keyword: Boundary
Place:
Place_Keyword_Thesaurus:
FIPS Publication 6-4
FIPS Publication 55
Place_Keyword: United States
Place_Keyword: Puerto Rico
Place_Keyword: County
Access_Constraints: None
Use_Constraints:
None. Acknowledgment of the U.S. Census Bureau would be appreciated
for products derived from these files. TIGER, TIGER/Line, and Census
TIGER are registered trademarks of the U.S. Census Bureau. ZCTA is a
trademark of the U.S. Census Bureau.
Native_Data_Set_Environment:
TIGER/Line files are created and processed in a VMS environment.
The environment consists of two Alpha Server 8400s clustered together
running OpenVMS version 6.2-1H3 used for production operations. The
Census TIGER system is driven by DEC Command language (DCL) procedures
which invoke C software routines to extract selected geographic and
cartographic information (TIGER/Line files) from the operational
Census TIGER database.
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 of objects in the "Spatial
Data Transfer 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 database. Standard geographic codes, such as FIPS codes for
states, counties, municipalities, and places, are used when encoding
spatial entities. The Census Bureau performed spatial data tests for
logical consistency of the codes during the compilation of the original
Census TIGER database 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 of the TIGER/Line files reflects the contents of the
Census TIGER database at the time the TIGER/Line files (UA Census 2000
version) were created.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The information present in these files is 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 materials 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 UA Census 2000 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 favorably 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 maps sheets prepared from the Census
TIGER database as they attempted to traverse every street feature
shown on the Census 2000 map sheets; the Census 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 sources, 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 positional
accuracy 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
U.S. Census Bureau
Geography Division
Publication_Date: Unpublished material
Title: Census TIGER database
Edition: UA Census 2000
Type_of_Source_Media: On line
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2000
Source_Currentness_Reference: Date the file was made available
to create TIGER/Line File extracts.
Source_Citation_Abbreviation: TIGER
Source_Contribution:
Selected geographic and cartographic information (line segments)
from the Census TIGER database.
Process_Step:
Process_Description:
In order for others to use the information in the Census TIGER
database in a GIS or for other geographic applications, the
Census Bureau releases periodic extracts of selected information
from the Census TIGER database, organized as topologically
consistent networks. Software (TIGER DB routines) written by
the Geography Division allows for efficient access to Census
TIGER system data. TIGER/Line files are extracted from the
Census TIGER database by county or statistical equivalent
area. Census TIGER data for a given county or statistical
equivalent area is then distributed among 17 fixed length
record ASCII files, each one containing attributes for either
line, polygon, or landmark geographic data types. The Census
Bureau has released various versions of the TIGER/Line files
since 1988, with each version having more updates (feature
and feature names, address ranges and ZIP Codes, coordinate
updates, revised field definitions, etc.) than the previous
version.
Source_Used_Citation_Abbreviation: Census TIGER database
Process_Date: 2000
Spatial_Data_Organization_Information:
Indirect_Spatial_Reference:
Federal Information Processing Standards (FIPS) and feature
names and addresses.
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Node, network
Point_and_Vector_Object_Count: 570 to 56,000
SDTS_Point_and_Vector_Object_Type: Entity point
SDTS_Point_and_Vector_Object_Type: Complete chain
Point_and_Vector_Object_Count: 790 to 83,000
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 290 to 33,000
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.000458
Longitude_Resolution: 0.000458
Geographic_Coordinate_Units: Decimal degrees
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
The TIGER/Line files contain data describing three major
types of features/entities;
Line Features -
1) Roads
2) Railroads
3) Hydrography
4) Miscellaneous transportation features and selected power lines
and pipe lines
5) Political and statistical boundaries
Landmark Features -
1) Point landmarks, e.g., schools and churches.
2) Area landmarks, e.g., Parks and cemeteries.
3) Key geographic locations (KGLs), e.g., shopping centers and
factories.
Polygon features -
1) Geographic entity codes for areas used to tabulate the Census
2000 census statistical data and 1990 geographic areas
2) Locations of area landmarks
3) Locations of KGLs
The line features and polygon information form the majority of
data in the TIGER/Line files. Some of the data/attributes
describing the lines include coordinates, feature identifiers
(names), CFCCs (used to identify the most noticeable
characteristic of a feature), address ranges, and geographic
entity codes. The TIGER/Line files contain point and area
labels that describe landmark features and provide locational
reference. Area landmarks consist of a feature name or label
and feature type assigned to a polygon or group of polygons.
Landmarks may overlap or refer to the same set of polygons.
The Census TIGER database uses collections of spatial objects
(points, lines, and polygons) to model or describe real-world
geography. The Census Bureau uses these spatial objects to
represent features such as streets, rivers, and political
boundaries and assigns attributes to these features to identify
and describe specific features such as the 500 block of Market
Street in Philadelphia, Pennsylvania.
Entity_and_Attribute_Detail_Citation:
U.S. Census Bureau, TIGER/Line files, UA Census 2000 Technical
Documentation. The TIGER/Line documentation defines the terms
and definitions used within the files.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Department of Commerce
U.S. Census Bureau
Geography Division
Products and Services Staff
Contact_Address:
Address_Type: Physical address
Address: 8903 Presidential Parkway, Room 303 WP I
City: Upper Marlboro
State_or_Province: Maryland
Postal_Code: 20772
Contact_Voice_Telephone: (301) 457-1128
Contact_Address:
Address_Type: Mailing address
Address: 4700 Silver Hill Road, Stop 7400
City: Washington
State_or_Province: District of Columbia
Postal_Code: 20233-7400
Contact_Voice_Telephone: (301) 457-1128
Contact_Facsimile_Telephone:
(301) 457-4710
Contact_Electronic _Mail_Address: tiger@census.gov
Resource_Description: UA Census 2000 TIGER/Line Files
Distribution_Liability:
No warranty, expressed or implied is made and no liability is
assumed by the U.S. Government in general or the U.S. Census
Bureau in specific as to the positional or attribute accuracy
of the data. The act of distribution shall not constitute
any such warranty and no responsibility is assumed by the U.S.
Government in the use of these files.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: TGRLN (compressed)
Format_Version_Number: UA Census 2000
Format_Version_Date: 2000
File_Decompression_Technique: PK-ZIP, version 1.93A or higher
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: www.census.gov/geo/www/tiger
Fees:
The online copy of the TIGER/Line files may be accessed without
charge. See http://www.census.gov/geo/www/tiger for information
on availability on CD-ROM/DVD and associated costs for these
products.
Ordering_Instructions:
To obtain more information about ordering TIGER/Line files visit
http://www.census.gov/geo/www/tiger.
Technical_Prequisites: The UA Census 2000 TIGER/Line files contain
geographic data only and do not include display or mapping software
or statistical data. For information on how to use the TIGER/Line
data with a specific software package users should contact the
company that produced the software. A list of vendors who have
developed software capable of processing TIGER/Line files can be
found by visiting http://www.census.gov/geo/www/tiger. The
TIGER/Line files are provided in ASCII text format only. Users
are responsible for converting or translating the files into a
format used by their specific software package.
Metadata_Reference_Information:
Metadata_Date: 2000
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Department of Commerce
U.S. Census Bureau
Geography Division
Products and Services Staff
Contact_Address:
Address_Type: Physical Address
Address: 8903 Presidential Parkway, Room 303 WP I
City: Upper Marlboro
State_or_Province: Maryland
Postal_Code: 20772
Contact_Voice_Telephone: (301) 457-1128
Contact_Electronic_Mail_Address: tiger@census.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: 19940608