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Metadata for the Railroads Map Layer
Railroads: Map Layer Description File
This map layer includes railroads in the United States. The Railroads map layer was
compiled by the U.S. Geological Survey.
Metadata
What follows is very detailed technical information about this map layer. This is often
called metadata. Metadata (or "data about data") describe the content, quality,
condition, and other characteristics of data. Metadata are used to organize and maintain
investments in data, to provide information to data catalogs and clearinghouses, and to
aid data transfers. The Federal Geographic Data Committee
(FGDC) publishes the Content Standard
for Digital Geospatial Metadata. Many organizations within and outside of the federal
government have adopted the FGDC metadata standard and are using automated indexing and
serving mechanisms to provide access to their holdings through the Internet. Visit the FGDC Clearinghouse to
learn more about how metadata is used in clearinghouses and to search for other data sets.
- Identification_Information:
- Citation:
- Citation_Information:
- Originator: U.S. Geological Survey
- Publication_Date: 1998
- Title: Railroads of the U.S.
- Publication_Information:
- Publication_Place: Reston, Virginia
- Publisher: U.S. Geological Survey
- Description:
- Abstract:
- This data set includes railroads in the United States.
- Purpose:
- These data are intended for geographic display and analysis at the national level, and
for large regional areas. The data should be displayed and analyzed at scales appropriate
for 1:2,000,000 data. No responsibility is assumed by the U.S. Geological Survey in the
use of these data.
- Supplemental_Information:
- Revisions: 1) 6/29/98 - In metadata, corrected ellipsoid name from WGS84 to GRS1980 and
changed flattening ratio. 2) 9/25/98 - In metadata, corrected source citation abbreviation
from MM to RR. 3) 12/10/98 - In data, added name field. 4) 2/26/99 - In metadata, modified
purpose statement, contacts, and distribution liability and corrected typos.
- Time_Period_of_Content:
- Time_Period_Information:
- Single_Date/Time:
- Calendar_Date: 1998
- Currentness_Reference: publication date
- Status:
- Progress: Complete
- Maintenance_and_Update_Frequency: Irregular
- Spatial_Domain:
- Bounding_Coordinates:
- West_Bounding_Coordinate: -151.0
- East_Bounding_Coordinate: -67.0
- North_Bounding_Coordinate: 65.0
- South_Bounding_Coordinate: 25.0
- Keywords:
- Theme:
- Theme_Keyword_Thesaurus: None
- Theme_Keyword: railroads
- Place:
- Place_Keyword_Thesaurus:
- U.S. Department of Commerce, 1995, Countries, dependencies, areas of special
sovereignty, and their principal administrative divisions (Federal Information Processing
Standard 10-4): Washington, D.C., National Institute of Standards and Technology.
- Place_Keyword: US
- Place:
- Place_Keyword_Thesaurus:
- U.S. Department of Commerce, 1987, Codes for the Identification of the States, the
District of Columbia and the Outlying Areas of The United States, and Associated Areas
(Federal Information Processing Standard (FIPS) 5-2): Washington ,D.C., National Institute
of Standards and Technology.
- Place_Keyword: USA
- Place_Keyword: Alaska
- Place_Keyword: Alabam
- Place_Keyword: Arkansas
- Place_Keyword: Arizona
- Place_Keyword: California
- Place_Keyword: Colorado
- Place_Keyword: Connecticut
- Place_Keyword: Delaware
- Place_Keyword: Florida
- Place_Keyword: Georgia
- Place_Keyword: Idaho
- Place_Keyword: Iowa
- Place_Keyword: Illinois
- Place_Keyword: Indiana
- Place_Keyword: Kansas
- Place_Keyword: Kentucky
- Place_Keyword: Louisiana
- Place_Keyword: Maine
- Place_Keyword: Massachusetts
- Place_Keyword: Maryland
- Place_Keyword: Michigan
- Place_Keyword: Minnesota
- Place_Keyword: Missouri
- Place_Keyword: Mississippi
- Place_Keyword: Montana
- Place_Keyword: North Carolina
- Place_Keyword: North Dakota
- Place_Keyword: Nebraska
- Place_Keyword: New Hampshire
- Place_Keyword: New Jersey
- Place_Keyword: New Mexico
- Place_Keyword: Nevada
- Place_Keyword: New York
- Place_Keyword: Ohio
- Place_Keyword: Oklahoma
- Place_Keyword: Oregon
- Place_Keyword: Pennsylvania
- Place_Keyword: Rhode Island
- Place_Keyword: South Carolina
- Place_Keyword: South Dakota
- Place_Keyword: Tennessee
- Place_Keyword: Texas
- Place_Keyword: Utah
- Place_Keyword: Vermont
- Place_Keyword: Virginia
- Place_Keyword: Wisconsin
- Place_Keyword: Washington
- Place_Keyword: West Virginia
- Place_Keyword: Wyoming
- Access_Constraints: None
- Use_Constraints:
- None. Acknowledgment of the National Atlas of the United States of America and (or) the
U.S. Geological Survey would be appreciated in products derived from these data.
- Point_of_Contact:
- Contact_Information:
- Contact_Person_Primary:
- Contact_Person: Steve Kambly
- Contact_Organization: U.S. Geological Survey
- Contact_Address:
- Address_Type: mailing address
- Address: 561 National Center
- City: Reston
- State_or_Province: VA
- Postal_Code: 20192
- Contact_Voice_Telephone: 703-648-5094
- Contact_Electronic_Mail_Address: skambly@usgs.gov
- Data_Quality_Information:
- Logical_Consistency_Report:
- Topological requirements include: Lines must begin and end at nodes,lines must connect
to each other at nodes, lines do not extend through nodes. The Arc/Info commands BUILD and
CLEAN were run to ensure the topological consistency of the data set.
- Completeness_Report:
- Data completeness generally reflects the content of the original 1:2,000,000-scale DLG
file.
- Lineage:
- Source_Information:
- Source_Citation:
- Citation_Information:
- Originator: U.S. Geological Survey
- Publication_Date: 1995
- Title:
- 1:2,000,000-scale Digital Line Graphs - Railroad Features
- Geospatial_Data_Presentation_Form: map
- Publication_Information:
- Publication_Place: Reston, Virginia
- Publisher: U.S. Geological Survey
- Source_Scale_Denominator: 2000000
- Type_of_Source_Media: CD-ROM
- Source_Time_Period_of_Content:
- Time_Period_Information:
- Range_of_Dates/Times:
- Beginning_Date: 1972
- Ending_Date: 1994
- Source_Currentness_Reference: publication date
- Source_Citation_Abbreviation: 2MILRR
- Source_Contribution: spatial and attribute information
- Source_Information:
- Source_Citation:
- Citation_Information:
- Originator: Railroad Information Service
- Publication_Date: 1997
- Title: Railroad of the Continental United States
- Publication_Information:
- Publication_Place: Georgetown, TX
- Publisher: Railroad Information Service
- Type_of_Source_Media: published map
- Source_Time_Period_of_Content:
- Time_Period_Information:
- Single_Date/Time:
- Calendar_Date: 1997
- Source_Currentness_Reference: publication date
- Source_Citation_Abbreviation: RAILINFO
- Source_Contribution: Confirmation of railroad names
- Source_Information:
- Source_Citation:
- Citation_Information:
- Originator: Rand-McNally
- Publication_Date: 1997
- Title: Commerce Atlas and Marketing Guide
- Publication_Information:
- Publication_Place: USA
- Publisher: Rand-McNally
- Type_of_Source_Media: book
- Source_Time_Period_of_Content:
- Time_Period_Information:
- Single_Date/Time:
- Calendar_Date: 1997
- Source_Currentness_Reference: publication date
- Source_Citation_Abbreviation: ATLAS1997
- Source_Contribution: Confirmation of railroad names
- Source_Information:
- Source_Citation:
- Citation_Information:
- Originator: Rand-McNally
- Publication_Date: 1998
- Title: Commerce Atlas and Marketing Guide
- Publication_Information:
- Publication_Place: USA
- Publisher: Rand-McNally
- Type_of_Source_Media: book
- Source_Time_Period_of_Content:
- Time_Period_Information:
- Single_Date/Time:
- Calendar_Date: 1998
- Source_Currentness_Reference: publication date
- Source_Citation_Abbreviation: ATLAS1998
- Source_Contribution: Confirmation of railroad names
- Process_Step:
- Process_Description:
- The 2MILRR was loaded to ESRI's Arc/Info software and the name field was added.
RAILINFO, ATLAS1997, ATLAS1998 were used to confirm railroad names.
- Source_Used_Citation_Abbreviation: 2MILRR
- Source_Used_Citation_Abbreviation: RAILINFO
- Source_Used_Citation_Abbreviation: ATLAS1997
- Source_Used_Citation_Abbreviation: ATLAS1998
- Process_Date: 1998
- Spatial_Data_Organization_Information:
- Indirect_Spatial_Reference:
- U.S. Department of Commerce, 1995, Countries, dependencies, areas of special
sovereignty, and their principal administrative divisions. (Federal Information Processing
Standard 10-4): Washington, D.C., National Institute of Standards and Technology.
U.S.
Department of Commerce, 1987, Codes for the identification of the States, the District of
Columbia and the outlying areas of the United States, and associated areas (Federal
Information Processing Standard 5-2): Washington, D.C., National Institute of Standards
and Technology.
U.S. Department of Commerce, 1990, Counties and equivalent entities of the United
States, its possessions, and associated areas (Federal Information Processing Standard
6-4): Washington, D.C. National Institute of Standards and Technology.
- 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: 8781
- Spatial_Reference_Information:
- Horizontal_Coordinate_System_Definition:
- Geographic:
- Latitude_Resolution: 0.000278
- Longitude_Resolution: 0.000278
- Geographic_Coordinate_Units: Decimal Degrees
- Geodetic_Model:
- Horizontal_Datum_Name: North American Datum 1983
- Ellipsoid_Name: GRS1980
- Semi-major_Axis: 6378137
- Denominator_of_Flattening_Ratio: 298.257222
- Entity_and_Attribute_Information:
- Detailed_Description:
- Entity_Type:
- Entity_Type_Label: railrdl020.dbf
- Entity_Type_Definition: Attribute table for railroad data.
- Entity_Type_Definition_Source: U.S. Geological Survey
- Attribute:
- Attribute_Label: Shape
- Attribute_Definition: The representation of the entity in the data
- Attribute_Definition_Source: U.S. Geological Survey.
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value: PolyLine
- Enumerated_Domain_Value_Definition: 2-dimensional element
- Enumerated_Domain_Value_Definition_Source:
- ESRI ArcView GIS software
- Attribute:
- Attribute_Label: fnode_
- Attribute_Definition:
- Internal sequence number of the from-node
- Attribute_Definition_Source: U.S. Geological Survey
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum: 1
- Range_Domain_Maximum: 6431
- Attribute:
- Attribute_Label: tnode_
- Attribute_Definition:
- Internal sequence number of the to-node
- Attribute_Definition_Source: U.S. Geological Survey
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum: 1
- Range_Domain_Maximum: 6433
- Attribute:
- Attribute_Label: lpoly_
- Attribute_Definition:
- Internal sequence number of the left polygon
- Attribute_Definition_Source: U.S. Geological Survey
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum: 1
- Range_Domain_Maximum: 2360
- Attribute:
- Attribute_Label: rpoly_
- Attribute_Definition:
- Internal sequence number of the right polygon
- Attribute_Definition_Source: U.S. Geological Survey
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum: 1
- Range_Domain_Maximum: 2360
- Attribute:
- Attribute_Label: length
- Attribute_Definition: Length in coverage units
- Attribute_Definition_Source: U.S. Geological Survey
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum: 0.000
- Range_Domain_Maximum: 6.494
- Attribute:
- Attribute_Label: railrdl020
- Attribute_Definition: Internal sequence number of the arc
- Attribute_Definition_Source: U.S. Geological Survey
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum: 1
- Range_Domain_Maximum: 8781
- Attribute:
- Attribute_Label: railrdl020
- Attribute_Definition: User assigned feature ID
- Attribute_Definition_Source: U.S. Geological Survey
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum: 1
- Range_Domain_Maximum: 8781
- Attribute:
- Attribute_Label: feature
- Attribute_Definition: type of railroad
- Attribute_Definition_Source: U.S. Geological Survey
- Attribute_Domain_Values:
- Enumerated_Domain:
- Enumerated_Domain_Value: railroad
- Enumerated_Domain_Value_Definition: A set of parallel rails that a train runs.
- Enumerated_Domain_Value_Definition_Source:
- U.S. Geological Survey
- Enumerated_Domain:
- Enumerated_Domain_Value: railroad in tunnel
- Enumerated_Domain_Value_Definition: A railroad that passes through a tunnel .
- Enumerated_Domain_Value_Definition_Source:
- U.S. Geological Survey
- Attribute:
- Attribute_Label: name
- Attribute_Definition: The name of the railroad.
- Attribute_Definition_Source: U.S. Geological Survey
- Attribute_Domain_Values:
- Unrepresentable_Domain: There is no predefined set of valid railroad names.
- Attribute:
- Attribute_Label: State
- Attribute_Definition: The name of the State in which the railroad is located.
- Attribute_Definition_Source: U.S. Geological Survey
- Attribute_Domain_Values:
- Codeset_Domain:
- Codeset_Name:
- Codes for the Identification of the States, the District of Columbia and the Outlying
Areas of the United States, and Associated Areas, FIPS PUB 5-2.
- Codeset_Source: U.S. Department of Commerce
- Attribute:
- Attribute_Label: State_fips
- Attribute_Definition:
- The Federal Information Processing Standard (FIPS) code used by the U.S. Bureau of the
Census for the State in which the railroad is located.
- Attribute_Definition_Source: U.S. Geological Survey
- Attribute_Domain_Values:
- Range_Domain:
- Range_Domain_Minimum: 01
- Range_Domain_Maximum: 56
- Distribution_Information:
- Distributor:
- Contact_Information:
- Contact_Organization_Primary:
- Contact_Organization:
- Earth Science Information Center, U.S. Geological Survey
- Contact_Address:
- Address_Type: mailing address
- Address: 507 National Center
- City: Reston
- State_or_Province: VA
- Postal_Code: 20192
- Contact_Voice_Telephone: 1-888-ASK-USGS (1-888-275-8747)
- Hours_of_Service: 0800-1600
- Contact_Instructions:
- In addition to the address above there are other ESIC offices throughout the country. A
full list of these offices is at <http://mapping.usgs.gov/esic/esic_index.html>
- Distribution_Liability:
- Although these data have been processed successfully on a computer system at the U.S.
Geological Survey, no warranty expressed or implied is made by the U.S. Geological Survey
regarding the utility of the data on any other system, nor shall the act of distribution
constitute any such warranty. No responsibility is assumed by the U.S. Geological Survey
in the use of these data.
- Metadata_Reference_Information:
- Metadata_Date: 19981210
- Metadata_Contact:
- Contact_Information:
- Contact_Person_Primary:
- Contact_Person: Gita Urban-Mathieux
- Contact_Organization: U.S. Geological Survey
- Contact_Address:
- Address_Type: mailing address
- Address: 521 National Center
- City: Reston
- State_or_Province: VA
- Postal_Code: 20192
- Contact_Voice_Telephone: 703-648-5175
- Contact_Electronic_Mail_Address: burbanma@usgs.gov
- Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
- Metadata_Standard_Version: FGDC-STD-001-1998
- Metadata_Security_Information:
- Metadata_Security_Classification_System: None
- Metadata_Security_Classification: Unclassified
- Metadata_Security_Handling_Description: None
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