TIGER/Line Shapefile, 2010, nation, U.S., Rails National Shapefile

Metadata also available as

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
U.S. Department of Commerce, U.S. Census Bureau, Geography Division
Publication_Date: 2010
Title:
TIGER/Line Shapefile, 2010, nation, U.S., Rails National Shapefile
Edition: 2010
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage:
<http://magic.lib.uconn.edu/magic_2/vector/37800/railct_37800_0000_2010_s100_census_1_shp.zip>
Online_Linkage: <http://www.census.gov/geo/www/tiger>
Description:
Abstract:
The TIGER/Line Files are shapefiles and related database files (.dbf) that are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line File is designed to stand alone as an independent data set, or they can be combined to cover the entire nation. The Rails Shapefile includes all features within the MTDB Super Class "Rail Features" distinguished where the MAF/TIGER Feature Classification Code (MTFCC) for the feature in MTDB tha begin with "R". This includes main lines such as spur lines, rail yards, mass transit rail lines such as carlines, streetcar track, monorail or other mass transit rail and special purpose rail lines such as cog rail lines, incline rail lines and trams.
Purpose:
In order for others to use the information in the Census MAF/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 Shapefiles.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 201001
Ending_Date: 201007
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency:
TIGER/Line Shapefiles are extracted from the Census MAF/TIGER database. No changes or updates will be made to this version of the TIGER/Line Shapefiles. Future releases of TIGER/Line Shapefiles will reflect updates made to the Census MAF/TIGER database.
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -179.231086
East_Bounding_Coordinate: 179.859681
North_Bounding_Coordinate: 71.441059
South_Bounding_Coordinate: 17.831509
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: transportation
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Nation
Theme_Keyword: Linear
Theme_Keyword: Feature
Theme_Keyword: Rail Feature
Place:
Place_Keyword_Thesaurus:
INCITS.38-200x (R2004),INCITS.31-200x (R2007),INCITS.454-200x,INCITS 455-200x,INCITS 446-2008
Place_Keyword: United States
Place_Keyword: U.S.
Access_Constraints: None
Use_Constraints:
The TIGER/Line Shapefile products are not copyrighted however TIGER/Line and Census TIGER are registered trademarks of the U.S. Census Bureau. These products are free to use in a product or publication, however acknowledgement must be given to the U.S. Census Bureau as the source. The horizontal spatial accuracy information present in these files is provided for the purposes of statistical analysis and census operations only. No warranty, expressed or implied is made with regard to the accuracy of the spatial accuracy, and no liability is assumed by the U.S. Government in general or the U.S. Census Bureau, specifically as to the spatial or attribute accuracy of the data. The TIGER/Line Shapefiles may not be 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.Coordinates in the TIGER/Line shapefiles have six implied decimal places, but the positional accuracy of these coordinates is not as great as the six decimal places suggest.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Department of Commerce, U.S. Census Bureau, Geography Division, Geographic Products Branch
Contact_Address:
Address_Type: Mailing address
Address: 4600 Silver Hill Road, Stop 7400
City: Washington
State_or_Province: DC
Postal_Code: 20233-7400
Country: United States
Contact_Voice_Telephone: 301-763-1128
Contact_Facsimile_Telephone: 301-763-4710
Contact_Electronic_Mail_Address: geo.tiger@census.gov
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.0.1770

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:
There may be some inconsistencies in feature names along features. An anomaly exists with the sporadic occurrence of road segments comprising a complete chain with different MAF/TIGER Feature Census Class Code (MTFCC) values assigned. This problem could affect applications that use the MTFCC values for network analysis, routing, or for assigning symbology to a feature when creating a map. The Census Bureau performed automated tests to ensure logical consistency and limits of shapefiles. Node/geometry and topology relationships are collected or generated to satisfy topological edit requirements. These requirements include: (1) Complete chains must begin and end at nodes. (2) Complete chains must connect to each other at nodes. (3) Complete chains do not extend through nodes. (4) Left and right polygons are defined for each complete chain element and are consistent throughout the extract process. (5) The chains representing the limits of the files are free of gaps.
Completeness_Report:
Data completeness of the TIGER/Line Shapefiles reflects the contents of the Census MAF/TIGER database at the time the TIGER/Line Shapefiles were created.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The Census Bureau uses Global Positioning System (GPS) coordinates at road centerline intersections to evaluate the horizontal spatial accuracy of source files that may be used to realign road features in the MAF/TIGER database and test the horizontal spatial accuracy of the road features in the TIGER/Line Shapefiles. The test compares a survey-grade GPS coordinate to its associated road centerline intersection in the TIGER/Line Shapefiles. The test is based on an independent collection of GPS coordinates for a random sample of road intersections from a centerline file that meet certain criteria. The points are referred to as the sample points and are gathered through a private contractor working for the Census Bureau. Since the collection method uses survey-quality GPS-based field techniques, the resulting control points are considered 'ground truth' against which the TIGER road centerline intersection coordinates are compared. The distances between the coordinates are calculated and the Census Bureau determines the Circular Error 95% (CE95). That is, the accuracy of the file in meters with 95% confidence. The CE95 can be calculated from the mean and standard deviation by using the formula: mean of differences plus (2.65 times the standard deviation). CE95 results reported for each file tested are determined using a spreadsheet with embedded statistical formula. The use and applicability of the spreadsheet and its embedded formula have been verified by Census Bureau statisticians. The basis of the calculation is the use of the root mean square error (RMSE). This is the method as stated in the U.S. Government's Federal Geographic Data Committee Standard FGDC-STD-007.3-1998, Geospatial Positioning Accuracy Standards. Part 3: National Standard for Spatial Data Accuracy. The results of using this measure of accuracy are in compliance with Federal Spatial Data requirements. In terms of the Census Bureau application, the dataset coordinate values are those taken from the centerline file and the coordinate values from an independent source of higher accuracy are those acquired through the Census Bureau's contractor. Please note that the horizontal spatial accuracy, where reported, refers only to the realigned road features identified as matched to the positionally accurate source file with that accuracy. It is not the spatial accuracy of the TIGER/Line Shapefile as a whole.
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 MAF/TIGER database
Type_of_Source_Media: online
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 201001
Ending_Date: 201007
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: MAF/TIGER
Source_Contribution:
The selected geographic and cartographic information (line segments) are derived from the U.S. Census Bureau's Master Address File Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) database.
Process_Step:
Process_Description:
TIGER/Line Shapefiles are extracted from the Census MAF/TIGER database by nation, state, county, and entity. Census MAF/TIGER data for all of the aforementioned geographic entities are then distributed among the shapefiles each containing attributes for line, polygon, or landmark geographic data.
Source_Used_Citation_Abbreviation: Census MAF/TIGER
Process_Date: 2010

Spatial_Data_Organization_Information:
Indirect_Spatial_Reference:
Federal Information Processing Standards (FIPS), ANSI, and feature names.
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Complete chain
Point_and_Vector_Object_Count: 185971

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.000458
Longitude_Resolution: 0.000458
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name:
North American Datum of 1983 in the 48 contiguous states, the District of Columbia, Alaska, Hawaii, Puerto Rico, the Virgin Islands of the United States, and the Pacific Island Areas.
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298257

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: RAILS.shp
Entity_Type_Definition: Rails National
Entity_Type_Definition_Source: U.S. Census Bureau
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: LINEARID
Attribute_Definition: Linear feature identifier
Attribute_Definition_Source: U.S. Census Bureau
Attribute_Domain_Values:
Unrepresentable_Domain: data are unavailable
Attribute:
Attribute_Label: FULLNAME
Attribute_Definition:
Concatenation of expanded text for prefix qualifier, prefix direction, prefix type, base name, suffix type, suffix direction, and suffix qualifier (as available) with a space between each expanded text field
Attribute_Definition_Source: U.S. Census Bureau
Attribute_Domain_Values:
Unrepresentable_Domain: data are unavailable
Attribute:
Attribute_Label: MTFCC
Attribute_Definition: MAF/TIGER feature class code
Attribute_Definition_Source: U.S. Census Bureau
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: R1011
Enumerated_Domain_Value_Definition: Railroad Feature (Main, Spur, or Yard)
Enumerated_Domain_Value_Definition_Source: U.S. Census Bureau
Enumerated_Domain:
Enumerated_Domain_Value: R1051
Enumerated_Domain_Value_Definition: Carline, Streetcar Track, Monorail, Other Mass Transit Rail
Enumerated_Domain_Value_Definition_Source: U.S. Census Bureau
Enumerated_Domain:
Enumerated_Domain_Value: R1052
Enumerated_Domain_Value_Definition: Cog Rail Line, Incline Rail Line, Tram
Enumerated_Domain_Value_Definition_Source: U.S. Census Bureau

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Department of Commerce, U.S. Census Bureau, Geography Division, Geographic Products Branch
Contact_Address:
Address_Type: Mailing address
Address: 4600 Silver Hill Road, Stop 7400
City: Washington
State_or_Province: DC
Postal_Code: 20233-7400
Country: United States
Contact_Voice_Telephone: 301-763-1128
Contact_Facsimile_Telephone: 301-763-4710
Contact_Electronic_Mail_Address: geo.tiger@census.gov
Resource_Description: Downloadable Data
Distribution_Liability:
No warranty, expressed or implied is made with regard to the accuracy of these data, and no liability is assumed by the U.S. Government in general or the U.S. Census Bureau in specific as to the spatial 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. The boundary information in the TIGER/Line Shapefiles is for statistical data collection and tabulation purposes only; their depiction and designation for statistical purposes do not constitute a determination of jurisdictional authority or rights of ownership or entitlement and they are not legal land descriptions.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: TGRSHP (compressed)
File_Decompression_Technique: PK-ZIP, version 1.93 A or higher
Transfer_Size: 0.335
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://www.census.gov/geo/www/tiger>
Offline_Option:
Offline_Media: DVD-ROM (Only if offered offline)
Recording_Format: ISO 9660
Fees:
The online copy of the TIGER/Line files may be accessed without charge.
Ordering_Instructions:
To obtain more information about ordering TIGER/Line shapefiles visit <http://www.census.gov/geo/www/tiger>
Technical_Prerequisites:
The TIGER/Line shapefiles contain geographic data only and do not include display mapping software or statistical data. For information on how to use the TIGER/Line shapefile data with specific software package users shall contact the company that produced the software.

Metadata_Reference_Information:
Metadata_Date: 20100507
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Department of Commerce, U.S. Census Bureau, Geography Division, Geographic Products Branch
Contact_Person: REQUIRED: The person responsible for the metadata information.
Contact_Address:
Address_Type: Mailing address
Address: 4600 Silver Hill Road, Stop 7400
City: Washington
State_or_Province: DC
Postal_Code: 20233-7400
Country: United States
Contact_Voice_Telephone: 301-763-1128
Contact_Facsimile_Telephone: 301-763-4710
Contact_Electronic_Mail_Address: geo.tiger@census.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile

Generated by mp version 2.9.6 on Tue Aug 02 10:33:21 2011