Union County 2010 Census Roads
Metadata from the RGIS Metadata Repository
Identification Information
- Title Union County 2010 Census Roads
- Date 2011-06-06
- Date Type Publication
- Cited Responsible Party
-
- Organization Name U.S. Department of Commerce, U.S. Census Bureau, Geography Division
- Role identify
- Presentation Form vector digital data
- 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 All Roads Shapefile includes all features within the MTDB Super Class "Road/Path Features" distinguished where the MAF/TIGER
Feature Classification Code (MTFCC) for the feature in MTDB tha begin with "S". This includes all primary, secondary, local
neighborhood, and rural roads, city streets, vehicular trails (4wd), ramps, service drives, alleys, parking lot roads, private
roads for service vehicles (logging, oil fields, ranches, etc.), bike paths or trails, bridle/horse paths, walkways/pedestrian
trails, and stairways.
- 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.
- Status Complete
- Point of Contact
-
- Individual Name
- Organization Name U.S. Department of Commerce, U.S. Census Bureau, Geography Division, Geographic Products Branch
- Position Name
- Role Point of contact
- Voice 301-763-1128
- Facsimile 301-763-4710
- Address
-
- Delivery Point 4600 Silver Hill Road, Stop 7400
- City Washington
- Administrative Area DC
- Postal Code 20233-7400
- Country United States
- Electronic Mail Address geo.tiger@census.gov
- 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.
- Descriptive Keywords County or equivalent entity, Linear Feature, Address Range, Street Centerline, Road Feature, Roads
- 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. The data are free from Title 13 restrictions.
- Language English
- Topic Category transportation
- Extent
-
- Geographic Bounding Box
-
- West Bound -104.009118
- East Bound -103.00197
- North Bound 37.000293
- South Bound 35.739456
- Temporal Extent
-
- Beginning Position 2010-01
- Ending Position 2010-07
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Distribution Information
- Distributor
-
- Individual Name
- Organization Name Earth Data Analysis Center
- Position Name Clearinghouse Manager
- Role Point of contact
- Voice 505-277-3622 ext. 230
- Facsimile 505-277-3614
- Address
-
- Delivery Point MSC01 1110
- Delivery Point 1 University of New Mexico
- City Albuquerque
- Administrative Area NM
- Postal Code 87131-0001
- Country USA
- Electronic Mail Address clearinghouse@edac.unm.edu
- Transfer Options
-
- Online Resource ZIP
- Online Resource ESRI Shapefile (shp)
- Online Resource GML
- Online Resource KML
- Online Resource GeoJSON
- Online Resource JSON
- Online Resource Comma Separated Values (csv)
- Online Resource MS Excel format (xls)
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Spatial Reference Information
- Spatial References
-
- Spatial Reference 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.
-
- Online Reference EPSG:4269
- Spatial Reference Geodetic Reference System 80
-
- Online Reference EPSG:7019
- Indirect Spatial Reference Colfax County (35007)
- Geometric Object Type Complete chain
- Geometric Object Count 7075
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Data Quality Information
- Attribute Accuracy Report
-
- 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.
- Quantitative Attribute Accuracy Assessment
-
- Attribute Accuracy Value
- Attribute Accuracy Explanation
- Horizontal Positional Accuracy Report
-
- 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.
- Quantitative Horizontal Positional Accuracy Assessment
-
- Horizontal Positional Accuracy Value 6.64 3.5 7.09
- Horizontal Positional Accuracy Explanation The Census Bureau uses root mean square error (RMSE) as stated in the FGDC-STD-007. 3-1998, Geospatial Positioning Accuracy
Standards, Part 3: National Standard for Spatial Data Accuracy. The Census Bureau uses root mean square error (RMSE) as stated
in the FGDC-STD-007. 3-1998, Geospatial Positioning Accuracy Standards, Part 3: National Standard for Spatial Data Accuracy.
The Census Bureau uses root mean square error (RMSE) as stated in the FGDC-STD-007. 3-1998, Geospatial Positioning Accuracy
Standards, Part 3: National Standard for Spatial Data 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.
- Lineage
-
- Source Information
-
- Source Citation
- Source Scale Denominator
- Type of Source Media online
- Source Time Period of Content
-
- Beginning Position 2010-01
- Ending Position 2010-07
- 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.
- Source Information
-
- Source Citation
- Source Scale Denominator
- Type of Source Media Unknown
- Source Time Period of Content
-
- Beginning Position Unknown
- Ending Position Unknown
- Source Currentness Reference Unknown
- Source Citation Abbreviation Cimarron
- Source Contribution Coordinates to realign selected road features in the Census MAF/TIGER database.
- Source Information
-
- Source Citation
- Source Scale Denominator
- Type of Source Media Unknown
- Source Time Period of Content
-
- Beginning Position Unknown
- Ending Position Unknown
- Source Currentness Reference Unknown
- Source Citation Abbreviation Union
- Source Contribution Coordinates to realign selected road features in the Census MAF/TIGER database.
- Source Information
-
- Source Citation
- Source Scale Denominator
- Type of Source Media Internet Download
- Source Time Period of Content
-
- Beginning Position Unknown
- Ending Position Unknown
- Source Currentness Reference Unknown
- Source Citation Abbreviation National
- Source Contribution Coordinates to realign selected hydrographic features in the Census MAF/TIGER database.
- Source Information
-
- Source Citation
- Source Scale Denominator
- Type of Source Media Unknown
- Source Time Period of Content
-
- Beginning Position Unknown
- Ending Position Unknown
- Source Currentness Reference Unknown
- Source Citation Abbreviation Colfax
- Source Contribution Coordinates to realign selected road features in the Census 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 MAF/TIGER
- Process Date 2010
- Process Time
- Process Contact
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Metadata Reference Information
- File Identifier 2d092e7e-e6d8-4e9a-9bd8-70837effd60e
- Metadata Language English
- Hierarchy Level Dataset
- Date Stamp 2024-11-08
- Metadata Standard Name ISO 19115:2003
- Metadata Standard Version 1.0
- Metadata Contact
-
- Individual Name
- Organization Name Earth Data Analysis Center
- Position Name Clearinghouse Manager
- Role Point of contact
- Voice 505-277-3622 ext. 230
- Facsimile 505-277-3614
- Address
-
- Delivery Point MSC01 1110
- Delivery Point 1 University of New Mexico
- City Albuquerque
- Administrative Area NM
- Postal Code 87131-0001
- Country USA
- Electronic Mail Address clearinghouse@edac.unm.edu
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