onemap_prod.SDEADMIN.rr

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: US Geological Survey-National Mapping Division

Publication_Date: 1987

Title: onemap_prod.SDEADMIN.rr

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:

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2) filename: rrt10098  This is the 100k rail only (superceded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

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: Mailing and physical address

Address: 301 North Wilmington Street, Suite 700

City: Raleigh

State_or_Province: North Carolina

Postal_Code: 27601-2825

Country: U.S.A.

Contact_Voice_Telephone: (919)733-2090

Contact_Facsimile_Telephone: (919)715-0725

Contact_Electronic_Mail_Address: dataq@cgia.state.nc.us

Hours_of_Service: 8:30am to 5:30pm

Contact_Instructions: Preferred contact is by email

Data_Set_Credit:

US Geological Survey (USGS)
North Carolina Department of Transportation (NCDOT)

NCCGIA Director, Karen Siderelis
Database Administration, Zsolt Nagy
Database Management, Ken Shaffer
North Carolina Center for Geographic Information and Analysis
Governor's Office
Office of State Planning
301 North Wilmington Street, Suite 700
Raleigh, NC 27601-2825

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722

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: Mailing and physical address

Address: 301 North Wilmington Street, Suite 700

City: Raleigh

State_or_Province: North Carolina

Postal_Code: 27601-2825

Country: U.S.A.

Contact_Voice_Telephone: (919) 733-2090

Contact_Facsimile_Telephone: (919)715-0725

Contact_Electronic_Mail_Address: dataq@cgia.state.nc.us

Hours_of_Service: 8:30AM - 5:30PM

Contact_Instructions: Phone and electronic mail preferred

Process_Step:

Process_Description: Metadata imported.

Source_Used_Citation_Abbreviation: C:\DOCUME~1\david\LOCALS~1\Temp\xml13.tmp

Process_Step:

Process_Description: Dataset copied.

Source_Used_Citation_Abbreviation:

Server=cgiatdb; Service=5151; Database=onemap_test; User=sdeadmin; Version=sde.DEFAULT

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

Vertical_Coordinate_System_Definition:

Altitude_System_Definition:

Altitude_Resolution: 1.000000

Altitude_Encoding_Method:

Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: onemap_prod.SDEADMIN.rr

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: TNODE_

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: FNODE_

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: LPOLY_

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: RPOLY_

Attribute:

Attribute_Label: RR24_100_

Attribute:

Attribute_Label: RR24_100_ID

Attribute:

Attribute_Label: SHAPE

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: SHAPE.len

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: Production Services

Contact_Address:

Address_Type: Mailing and physical address

Address: 301 North Wilmington Street, Suite 700

City: Raleigh

State_or_Province: North Carolina

Postal_Code: 27601-2825

Country: USA

Contact_Voice_Telephone: (919) 733-2090

Contact_Facsimile_Telephone: (919) 715-0725

Contact_Electronic_Mail_Address: dataq@cgia.state.nc.us

Hours_of_Service: 8:30AM - 5:30PM

Contact_Instructions:

Phone and electronic mail preferred For current price information use a web browser: COST INFORMATION - <http://www.cgia.state.nc.us/cost.html>

Resource_Description: Transportation- Railroads (1:24,000/1:100,000)

Distribution_Liability:

NCCGIA is charged with the development and maintenance of the State's corporate geographic database and, in cooperation with other mapping organizations, is committed to offering its users accurate, useful, and current information about the state. Although every effort has been made to ensure the accuracy of information, errors and conditions originating from physical sources used to develop the corporate database may be reflected in the data supplied. The client must be aware of data 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 data. The use of trade names or commercial products does not constitute their endorsement by the NCCGIA or North Carolina State Government.

Standard_Order_Process:

Non-digital_Form:

FOR DIGITAL OR NON-DIGITAL DATA, Contact NC CGIA, Data Distribution to order data, Phone 919.733.2090 ... Email dataq@cgia.state.nc.us ... Web Page order form <http://www.cgia.state.nc.us/cgdb/index.html>

Fees:

For current FORMAT/MEDIA INFORMATION, use a web browser: <http://www.cgia.state.nc.us/cost.html> or phone NC CGIA Data Distribution 919.733.2090

Custom_Order_Process:

Data creation and large data analysis jobs contact Database Administration P:(919)733-2090. All data is available through standard ordering procedures on a cost recovery basis.

Technical_Prerequisites:

All formats supplied are created using ARC/INFO GIS software on Unix workstations. Other formats are available. Format compatibility is the user's responsibility. For more information on formats and media, use a web browser: FORMAT/MEDIA INFORMATION - <http://www.cgia.state.nc.us/cost.html>

Available_Time_Period:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19981201

Ending_Date: Present

Metadata_Reference_Information:

Metadata_Date: 20061002

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: North Carolina Center for Geographic Information and Analysis

Contact_Person: REQUIRED: The person responsible for the metadata information.

Contact_Position: Database Management

Contact_Address:

Address_Type: Mailing and physical address

Address: 301 North Wilmington Street, Suite 700

City: Raleigh

State_or_Province: North Carolina

Postal_Code: 27601-2825

Country: USA

Contact_Voice_Telephone: (919) 733-2090

Contact_Facsimile_Telephone: (919) 715-0725

Contact_Electronic_Mail_Address: dataq@cgia.state.nc.us

Hours_of_Service: 8:30AM - 5:30PM

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 data set identified and received from NCCGIA. NCCGIA does not support secondary distribution. If this data file was received from anyone besides NCCGIA, this metadata file and the data set it describes may contain discrepancies.

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile