Identification_Information: Citation: Citation_Information: Originator: US Geological Survey-National Mapping Division Publication_Date: 1987 Title: Railroads Geospatial_Data_Presentation_Form: vector digital data Publication_Information: Publication_Place: Reston, Virginia Publisher: US Geological Survey-National Mapping Division Other_Citation_Details: NCCGIA distributes this dataset Online_Linkage: www.nconemap.com Description: Abstract: The US Geological Survey-National Mapping Division created the 1:100,000-scale Railroads data from their published maps. The 1:24,000 scale railroads were derived from USGS's DLG (Digital Line Graph) Program The NC Center for Geographic Information and Analysis, combined these two data sources to develop the NC statewide Transportation-Railroads digital data as a base layer showing railroad features. 24 k data was use when duplicate tracks existed from both sources. Purpose: This data was created to assist governmental agencies and others in making resource management decisions through use of a Geographic Information System (GIS). Supplemental_Information: Refer to "USGS Digital Cartographic Data Standards," circular 895-G for USGS Coding Classification. Also, see www.usgs.gov for further information on the DLG Program. >system filename : rr24_100 approx. file size = 2.4 mb > >Revisions and updates to this layer include: >3) filename: rr24_1001298 - the December, 1998 release of this >data was the first release as a statewide combined file. This >file is a combination of the 24 k dlg data previously stored >by quad tile, and the 100k statewide rail file from the 100k >dlg data. >2) filename: rrt10098 This is the 100k rail only (superceded >by the combined file) in the 83/sp/m projection. This was >performed in 1998. This is a statewide file. >3) filename: rrt10087 The 1987 version was the first release >of the 100k rail data. This is a statewide file. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 19981201 Currentness_Reference: First CGIA release date. Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -84.293944 East_Bounding_Coordinate: -76.089377 North_Bounding_Coordinate: 36.615359 South_Bounding_Coordinate: 33.836698 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: DLG Theme_Keyword: railroads Theme_Keyword: transportation Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: transportation Place: Place_Keyword_Thesaurus: William S. Powell, The North Carolina GAZETTEER, A Dictionary of Tar Heel Places, (Chapel Hill: University of North Carolina Press), August 1984. Place_Keyword: North Carolina Access_Constraints: None Use_Constraints: Acknowledgement of products derived from this data set should cite the following: The source of the Transportation- Railroads (1:24,000/1:100,000) data is the North Carolina Corporate Geographic Database. Earlier versions of this dataset may exist. The user must be sure to use the appropriate data set for the time period of interest. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, CGIA cannot assume liability for any damages or misrepresentation caused by any inaccuracies in the data or as a result of changes to the data caused by system transfers. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: NC Center for Geographic Information and Analysis Contact_Address: Address_Type: Physical Address: 333 E. Six Forks Rd. City: Raleigh State_or_Province: North Carolina Postal_Code: 27609 Country: U.S.A. Contact_Address: Address_Type: Mailing Address: 20322 Mail Service Center City: Raleigh State_or_Province: North Carolina Postal_Code: 27699 Country: U.S.A. Contact_Voice_Telephone: 919-754-6580 Contact_Facsimile_Telephone: 919-715-8551 Contact_Electronic_Mail_Address: dataq@its.nc.gov Hours_of_Service: 8am to 5pm Contact_Instructions: Phone and electronic mail preferred Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The digital line graphs (DLGs)for transportation - railroads were delineated on USGS 1:100,000-scale topographic maps and 1:24,000 scale topographic maps and attributed with USGS DLG codes. The digital files were supplied to NC CGIA who edits the attributes as changes occur. The two datasets were merged to fill in gaps that occured in both datasets allowing for a more complete statewide railroad coverage. Logical_Consistency_Report: Using ESRI's ARC/INFO GIS software, the data set was built for arc topology using the "build" command. Topology has not been edited since the last build. Completeness_Report: These data represent transportation features for railroads, as determined by the US Geological Survey 1:100,000-scale Digital Line Graph program and 1:24,000-scale Digital Line Graph program. Each feature is attributed with various DLG codes. Data represent all known railroads at time of publication of sources. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Features were delineated on USGS 30 x 60 Minute and 7.5 minute series topographic maps, which meet National Map Accuracy Standards. The DLGs were digitized and supplied to NC CGIA who converted them into ARC/INFO format. The data was projected, and features are added as changes occur. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey or another mapping agency in cooperation with USGS. Publication_Date: Unknown Title: The Topographic Map Names Data Base designation for the source quadrangle. Geospatial_Data_Presentation_Form: map Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Other_Citation_Details: Data is updated irregularly. Source_Scale_Denominator: 24000 Type_of_Source_Media: stable-base material Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1938 Ending_Date: 1990 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: MAP1 Source_Contribution: spatial and attribute information Source_Information: Source_Citation: Citation_Information: Originator: US Geological Survey Publication_Date: Unknown Title: Digital Line Graphs Geospatial_Data_Presentation_Form: Map Publication_Information: Publication_Place: Reston, Virginia Publisher: US Geological Survey Other_Citation_Details: USGS 1:100,000-scale DLG Program Source_Scale_Denominator: 100000 Type_of_Source_Media: Paper Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1984 Ending_Date: 1986 Source_Currentness_Reference: Publication dates of quadrangles Source_Citation_Abbreviation: None Source_Contribution: Digital Line Graphs Process_Step: Process_Description: For Digital Revision Status = Not digitally revised: This Digital Line Graph was digitized from the USGS source quadrangle, by either the National Mapping Division, one of their cooperators, or one of their contractors. The digital data were produced by one of the following methods: - scanning a stable-based copy of the graphic materials. The scanning process captured the digital data at a scanning resolution of at least 0.001 inches; the resulting raster data were vectorized and then attributed on an interactive editing station. o scanning the paper map. The scanning process captured the digital data at a scanning resolution of at least 0.001 inches; the resulting raster data were vectorized and then attributed on an interactive editing station. - scanning a stable-based copy of the graphic materials. The resulting raster data were then manually digitized and attributed on an interactive editing station. The resolution of the digital data is at least 0.001 inches. o scanning the paper map. The resulting raster data were then manually digitized and attributed on an interactive editing station. The resolution of the digital data is at least 0.001 inches. - manually digitizing from a stable-based copy of the graphic material using a digitizing table to capture the digital data at a resolution of at least 0.001 inches; attribution was performed either as the data were digitized, or on an interactive edit station after the digitizing was completed. - manually digitizing from the paper map using a digitizing table to capture the digital data at a resolution of at least 0.001 inches; attribution was performed either as the data were digitized, or on an interactive edit station after the digitizing was completed. The determination of the DLG production method was based on various criteria, including feature density, feature symbology, and availability of production systems. Four control points corresponding to the four corners of the quadrangle were used for registration during data collection. An eight parameter projective transformation was performed on the coordinates used in the data collection and editing systems to register the digital data to the internal coordinates used in PROSYS, and a four parameter linear transformation was performed from the PROSYS internal coordinates to Universal Transverse Mercator (UTM) grid coordinates. The DLG data were checked for position by one or more of the following processes: - comparing plots of the digital data to the graphic source. - comparing the digital data to the digital raster scan. DLG data classification was checked by at least one of the following processes. - comparing plots of the digital data to the graphic source - comparing the digital data to the digital raster scan. Source_Used_Citation_Abbreviation: MAP1 Process_Date: Unknown Process_Step: Process_Description: NCCGIA received the dlg linework for the railroads from the USGS in a digital format. These files were refined at NCCGIA, including edgematching, deletion of neatlines. Errors in dlg label codes or inconsistencies in label order are corrected as they are found. Additional linework is added as needed. The 24,000 and 100,000 scale data was combined into one statewide file for ease of use. Process_Date: 19981201 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: NCCGIA Contact_Address: Address_Type: Physical Address: 333 E. Six Forks Rd. City: Raleigh State_or_Province: North Carolina Postal_Code: 27609 Country: U.S.A. Contact_Address: Address_Type: Mailing Address: 20322 Mail Service Center City: Raleigh State_or_Province: North Carolina Postal_Code: 27699 Country: U.S.A. Contact_Voice_Telephone: 919-754-6580 Contact_Facsimile_Telephone: 919-715-8551 Contact_Electronic_Mail_Address: dataq@its.nc.gov Hours_of_Service: 8am to 5pm Contact_Instructions: Phone and electronic mail preferred Spatial_Data_Organization_Information: Indirect_Spatial_Reference: _Method: None Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: String Point_and_Vector_Object_Count: 10837 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Node, planar graph Point_and_Vector_Object_Count: 2185 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: State Plane Coordinate System 1983 State_Plane_Coordinate_System: SPCS_Zone_Identifier: 3200 Lambert_Conformal_Conic: Standard_Parallel: 34.333333 Standard_Parallel: 36.166667 Longitude_of_Central_Meridian: -79.000000 Latitude_of_Projection_Origin: 33.750000 False_Easting: 609601.220000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.002048 Ordinate_Resolution: 0.002048 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: Railroads Entity_Type_Definition: Railroad features as designated on USGS 24,000 and 100,000 scale digital line graphs. Entity_Type_Definition_Source: US Geological Survey, National Mapping Div. Attribute: Attribute_Label: LENGTH Attribute_Definition: Length of arc in coverage units Attribute_Definition_Source: Software computed Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 23.828 Range_Domain_Maximum: 60371.680 Attribute_Units_of_Measure: meters Attribute_Measurement_Resolution: 0.001 Attribute_Measurement_Frequency: As needed Attribute: Attribute_Label: MINOR1 Attribute_Definition: Minor DLG numeric code Attribute_Definition_Source: USGS Attribute_Domain_Values: Codeset_Domain: Codeset_Name: USGS DLG Codes Codeset_Source: USGS Digital Cartographic Data Standards, circular 895-G Attribute_Measurement_Frequency: As needed Attribute: Attribute_Label: OBJECTID 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: MAJOR1 Attribute_Definition: Major DLG numeric code Attribute_Definition_Source: USGS Attribute_Domain_Values: Codeset_Domain: Codeset_Name: USGS DLG Codes Codeset_Source: USGS Digital Cartographic Data Standards, circular 895-G Attribute_Measurement_Frequency: As needed Attribute: Attribute_Label: SCALE Attribute_Definition: Scale of feature source Attribute_Definition_Source: The scale denominator of the feature source Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 100000 Enumerated_Domain_Value_Definition: Source is 1:100,000-scale dlgs Enumerated_Domain_Value_Definition_Source: NC CGIA Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: 24,000 Enumerated_Domain_Value_Definition: Source is 1:24,000-scale dlgs Enumerated_Domain_Value_Definition_Source: NC CGIA Attribute_Measurement_Frequency: As needed Attribute: Attribute_Label: SHAPE Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Overview_Description: Entity_and_Attribute_Overview: An arc coverage depicting the locations of railroads mapped in both 1:24,000 and 1:100,000 scales delineated by the US Geological Survey. The arc attribute table (AAT) has data including to- and from-node identifiers, left- and right- side polygon identifiers, length of linear feature in meters, and two internal identification numbers. There are three additional items, which describe the features, according to USGS Digital Line Graph codes, as well as a base map scale attribute. >COLUMN ITEM NAME WDTH OPUT TYP N.DEC ALTERNATE NAME >1 FNODE# 4 5 B - From node id >5 TNODE# 4 5 B - To node id >9 LPOLY# 4 5 B - Left poly id >13 RPOLY# 4 5 B - Right poly id >17 LENGTH 4 12 F 3 Length in meters >21 RR24_100# 4 5 B - Internal id >25 RR24_100-ID 4 5 B - Internal id >29 MAJOR1 6 6 I - USGS DLG code >35 MINOR1 6 6 I - USGS DLG code >41 SCALE 6 6 I - Base map scale Entity_and_Attribute_Detail_Citation: Refer to USGS Digital Cartographic Data Standards, circular 895-G for descriptions of the DLG major/minor codes. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: NC Center for Geographic Information and Analysis Contact_Position: Database Administration Contact_Address: Address_Type: Physical Address: 333 E. Six Forks Rd. City: Raleigh State_or_Province: North Carolina Postal_Code: 27609 Country: U.S.A. Contact_Address: Address_Type: Mailing Address: 20322 Mail Service Center City: Raleigh State_or_Province: North Carolina Postal_Code: 27699 Country: U.S.A. Contact_Voice_Telephone: 919-754-6580 Contact_Facsimile_Telephone: 919-715-8551 Contact_Electronic_Mail_Address: dataq@its.nc.gov Hours_of_Service: 8:30AM - 5:30PM Contact_Instructions: Phone and electronic mail preferred Distribution_Liability: NCCGIA is charged with the development and maintenance of NC OneMap and, in cooperation with other mapping organizations, is committed to offering its users accurate, useful, and current information. Although every effort has been made to ensure the accuracy of information, errors and conditions originating from physical sources used to develop this dataset may be reflected in the data supplied. The user must be aware of possible conditions and bear responsibility for the appropriate use of the information with respect to possible errors, original map scale, collection methodology, currency of data, and other conditions specific to certain data. NCCGIA does not support secondary distribution of this dataset without its current, compliant metadata record. The use of trade names or commercial products does not constitute their endorsement by NCCGIA or North Carolina State Government. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ESRI shapefile (*.shp) Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: ftp://ftp.nconemap.com/outgoing/vector/rr.zip Fees: None. Download from www.nconemap.com is free of charge. Custom_Order_Process: Data can be customized on a cost-recovery basis. Contact dataq@its.nc.gov or 919-754-6580 for more information. Technical_Prerequisites: This data is provided as an ESRI shapefile. Other formats are available on a cost-recovery basis - contact dataq@its.nc.gov or 919-754-6580 for more information. Format compatibility is the user's responsibility. Metadata_Reference_Information: Metadata_Date: 20110610 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: North Carolina Center for Geographic Information and Analysis Contact_Person: David Giordano Contact_Position: Database Administration Contact_Address: Address_Type: Physical Address: 333 E. Six Forks Rd. City: Raleigh State_or_Province: North Carolina Postal_Code: 27609 Country: U.S.A. Contact_Address: Address_Type: Mailing Address: 20322 Mail Service Center City: Raleigh State_or_Province: North Carolina Postal_Code: 27699 Country: U.S.A. Contact_Voice_Telephone: 919-754-6580 Contact_Facsimile_Telephone: 919-715-8551 Contact_Electronic_Mail_Address: dataq@its.nc.gov Hours_of_Service: 8am to 5pm Contact_Instructions: Phone and electronic mail preferred Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Access_Constraints: None Metadata_Use_Constraints: This metadata file is to accompany the dataset. NCCGIA does not support secondary distribution of this dataset without its current, compliant metadata record. If the dataset described in this metadata record was received from anyone besides NCCGIA, this metadata and the dataset it describes may contain discrepancies.