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Global GIS : Country political boundaries

Identification Information
Citation
Originator
United States. National Imagery and Mapping Agency
Publication Date
2003
Title
Global GIS : Country political boundaries
Geospatial Data Presentation Form
vector digital data
Collection Title
Global GIS : global coverage
Publication Information
Publication Place
[Alexandria, VA]
Publisher
American Geological Institute
Online Linkage
https://hgl.harvard.edu/catalog/harvard-glb-polbnd
Abstract
This datalayer is a polygon coverage representing country political boundaries worldwide and was published as part of the USGS Global GIS : global coverage database. It was originally produced by the National Imagery and Mapping Agency (NIMA, now the Nation Geospatial-Intelligence Agency (NGA)) for the Vector Map (VMap) Level 0 database (1997). The USGS Global GIS database contains a wealth of USGS and other public domain data, including global coverages of elevation, landcover, seismicity, and resources of minerals and energy at a nominal scale of 1:1 million. The U.S. Geological Survey (USGS) and The American Geological Institute (AGI) announced a cooperative agreement that will focus on making the USGS Global Geographic Information System (GIS) database readily available to educators and the general public in the form of a DVD based world atlas. The Vector Map (VMap) Level 0 database represents the third edition of the Digital Chart of the World. The second edition was a limited release item published 1995 09. The product is dual named to show its lineage to the original DCW, published in 1992, while positioning the revised product within a broader emerging-family of VMap products. VMap Level 0 is a comprehensive 1:1,000,000 scale vector basemap of the world. It consists of cartographic, attribute, and textual data stored on compact disc read only memory (CD-ROM). The primary source for the database is the National Imagery and Mapping Agency's (NIMA) Operational Navigation Chart (ONC) series. This is the largest scale unclassified map series in existence that provides consistent, continuous global coverage of essential basemap features. The database contains more than 1,900 megabytes of vector data and is organized into 10 thematic layers. The data includes major road and rail networks, major hydrologic drainage systems, major utility networks (cross-country pipelines and communication lines), all major airports, elevation contours (1000 foot(ft), with 500ft and 250ft supplemental contours), coastlines, international boundaries and populated places. The database can be accessed directly from the four optical CD-ROMs that store the database or can be transferred to a magnetic media.
Purpose
This data is a general purpose political boundaries datalayer designed to support Geographic Information Systems applications.
Supplemental Information
Portions of this metadata are taken directly from the American Geological Institute, Global GIS, Web pages: http://www.agiweb.org/pubs/globalgis/
Temporal Extent
Currentness Reference
original publication date
Time Instant
199701
Bounding Box
West
-180.000000
East
180.000000
North
83.627419
South
-90.000000
Theme Keyword
Boundaries
Territory, National
Theme Keyword Thesaurus
LCSH
ISO Topic Category
boundaries
Place Keyword
Earth
Northern Hemisphere
Southern Hemisphere
Eastern Hemisphere
Western Hemisphere
Africa
Asia
Australia
Europe
North America
South America
Polar Regions
Place Keyword Thesaurus
LCSH
Temporal Keyword
Access Restrictions
Access is granted to licensee (Harvard University) only. Available only to Harvard University affiliates. Affiliates are limited to current faculty, staff and students.
Use Restrictions
Cite National Imagery and Mapping Agency. For educational non-commercial use only. Harvard University makes no claims, no representations, and no warranties, express or implied, concerning the validity, the reliability or the accuracy of the GIS data and GIS data products furnished, including the implied validity of any uses of such data.
Status
Complete
Maintenance and Update Frequency
Continually
Point of Contact
Contact Organization
United States. National Geospatial-Intelligence Agency
Delivery Point
Office of Corporate Relations
Delivery Point
Public Affairs Division, MS D-54
Delivery Point
4600 Sangamore Road
City
Bethesda
State
MD
Postal Code
20816-5003
Country
USA
Contact Telephone
800-455-0899
Contact Electronic Mail Address
chdesk@nga.mil
Credit
National Imagery and Mapping Agency (now known as National Geospatial-Intelligence Agency).
Native Data Set Environment
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcCatalog 9.1.0.722
Collection
Originator
American Geological Institute
Originator
Geological Survey (U.S)
Originator
Environmental Systems Research Institute (Redlands, Calif.)
Originator
Hearn, Paul P.
Publication Date
2003
Title
Global GIS : global coverage
Geospatial Data Presentation Form
digital data
Series Information
Series Name
U.S. Geological Survey digital data series
Issue Identification
DDS-62A-H
Publication Information
Publication Place
[Alexandria, VA]
Publisher
American Geological Institute
Other Citation Details
1 DVD-ROM; Developed by the U.S. Geological Survey; Published by the American Geological Institute; by P. Hearn ... [et al.].
Data Quality Information
Attribute Accuracy Report
100 percent of attribute codes were reviewed against the source manuscripts. No formal effort was undertaken to develop a quantitative attribute accuracy statement.
Logical Consistency Report
All data were found to be topologically correct. No duplicate features are present. All areas are completely described as depicted on the source manuscripts. No undershoots or overshoots are present. All data were consistently captured using the rules described in the narrative associated with the Data Quality Table and in the various feature table narrative files present at the coverage level within the library.
Completeness Report
100 percent of features depicted on the ONC source materials have been captured. 100 percent of the features have valid attribute codes assigned to them.
Horizontal Positional Accuracy Report
The Horizontal Positional Accuracy Value represents overall accuracy. Source chart-specific accuracies are available as area feature attributes in the VMap-0 data quality coverage. The primary accuracy analysis was performed on one chart only in the prototyping phase of the DCW project. Horizontal Positional Accuracy is expressed in meters. Detailed horzontal accuracy figures were developed by comparing the positions of well-defined points in the roads, railroads, utility lines, and drainage coverages against sources of higher accuracy, measuring the offsets, and expressing differences as a Circular Map Accuracy figure at a 90% confidence interval. This figure was independently verified by adding known production errors to source chart accuracies in a root sum square calculation.
Lineage
Source
Originator
United States. National Imagery and Mapping Agency
Publication Date
199701
Title
VMAP_1V10 - Vector Map Level 0 (Digital Chart of the World)
Edition
3
Geospatial Data Presentation Form
vector digital data
Publication Information
Publication Place
Fairfax, VA
Publisher
National Imagery and Mapping Agency
Other Citation Details
Country Political Boundaries layer (POLBNDA)
Source Scale Denominator
1000000
Type of Source Media
CD-ROM
Source Temporal Extent
Time Period Information
Single Date/Time
Calendar Date
199701
Source Currentness Reference
publication date
Contribution
Originally published data set
Source
Originator
United States. National Imagery and Mapping Agency
Publication Date
1994
Title
Operational navigational chart
Geospatial Data Presentation Form
map
Publication Information
Publication Place
St. Louis, MO
Publisher
National Imagery and Mapping Agency
Source Scale Denominator
1000000
Type of Source Media
stable-base material
Source Temporal Extent
Time Period Information
Range of Dates/Times
Beginning Date
1974
Ending Date
1994
Source Currentness Reference
publication dates
Contribution
All information found on the source with the exception of aeronautical data
Spatial Data Organization Information
Direct Spatial Reference Method
Vector
Point and Vector Object Information
SDTS Terms Description
SDTS Point and Vector Object Type
G-polygon
Point and Vector Object Count
27250
Spatial Reference Information
Horizontal Coordinate System Definition
Geographic
Latitude Resolution
0.000001
Longitude Resolution
0.000001
Geographic Coordinate Units
Decimal degrees
Geodetic Model
Horizontal Datum Name
North American Datum of 1927
Ellipsoid Name
Clarke 1866
Semi-major Axis
6378206.400000
Denominator of Flattening Ratio
294.978698
Vertical Coordinate System Definition
Altitude System Definition
Altitude Datum Name
Unknown
Altitude Resolution
1.000000
Altitude Distance Units
Unknown
Altitude Encoding Method
Explicit elevation coordinate included with horizontal coordinates
Entity and Attribute Information
Entity Type
Entity Type Label
Global GIS Political Boundaries
Entity Type Definition
Polygons representing country political boundaries worldwide.
Entity Type Definition Source
None.
Attributes
F_CODE
Feature and Attribute Coding (FACC) feature code
FA001
Administrative Area. An area controlled by an administrative authority.
Definition Source
Digital Geographic Information Exchange Standard (DIGEST) ed. 2.1 (2000)
NAM
Name
Definition Source
Any identifier or code
NA2
Abbreviation for Na2_descri. The two-letter country code from the United States Federal Information Processing Standards (FIPS) coding scheme (Federal Information Processing Standards Publication 10-4National Institute of Standards and Technology)
Definition Source
Department of Commerce, National Institute of Standards and Technology
NA2_DESCRI
Country Name (Text)
Definition Source
Global Mapping International
NA3
Abbreviation for Na3_descri. Continent/Region Code
A
Asia
E
Europe
F
Africa
N
North America
S
South America
T
Antarctic Area
U
Australian Area
Definition Source
American Geological Institute
NA3_DESCRI
Continent of country location
Definition Source
American Geological Institute
MARC.GLB_POLBND.AREA
Area within boundary in meters squared
Definition Source
American Geological Institute
PERIMETER
Distance traced around boundary in meters
Definition Source
American Geological Institute
WFBPATHLNK
Info source? (Text)
Definition Source
American Geological Institute
WFBPATH_AG
Info source? (Text)
Definition Source
None
CIA_FBWEB
Info source? (Text)
Definition Source
None
SHAPE
Feature geometry (Coordinates defining the features.)
Definition Source
ESRI
SHAPE.AREA
Area in units squared (Positive real numbers that are automatically generated.)
Definition Source
ESRI
SHAPE.LEN
Length of feature in internal units (Positive real numbers that are automatically generated.)
Definition Source
ESRI
SHAPE.FID
Internal feature number (Sequential unique whole numbers that are automatically generated.)
Definition Source
ESRI
Entity and Attribute Overview
The DCW used a product-specific attribute coding system that is composed of TYPE and STATUS designators for area, line, and point features; and LEVEL and SYMBOL designators for text features. The TYPE attribute specifies what the feature is, while the STATUS attribute specifies the current condition of the feature. Some features require both a TYPE and STATUS code to uniquely identify their characteristics. In order to uniquely identify each geographic attribute in the DCW, the TYPE and STATUS attribute code names are preceeded by the two letter coverage abbreviation and a two letter abbreviation for the type of graphic primitive present. VMap-0 data is attribute coded in accordance with Feature and Attribute Coding Catalog FACC). The DCW Type/Status codes were mapped into the FACC coding scheme. A full description of FACC may be found in Digital Geographic Information Exchange Standard Edition 1.2, January 1994.
Entity and Attribute Detail Citation
Entities (features) and Attributes for DCW are fully described in: Department of Defense, 1992, Military Specification Digital Chart of the World (MIL-D-89009): Philidelphia, Department of Defense, Defense Printing Service Detachment Office. VMap-0 is described in: Department of Defense, Military Specification, Vector Map (VMap) Level 0 (MIL-V-89039), 9 Feb 1995.
Distribution Information
Format Name
Shape
Distributor
Harvard Geospatial Library
Online Access
http://hgl.harvard.edu/
Name
Metadata Reference Information
Metadata Date
20060201
Metadata Contact
Contact Information
Contact Organization Primary
Contact Organization
Harvard Geospatial Library
Contact Position
Geospatial Resources Cataloger
Contact Address
Address
Harvard University Library
Address
Office For Information Systems
Address
1280 Massachusetts Avenue
City
Cambridge
State or Province
MA
Postal Code
02138
Country
USA
Contact Voice Telephone
617-495-2417
Contact Facsimile Telephone
617-496-0440
Contact Electronic Mail Address
hgl_ref@hulmail.harvard.edu
Hours of Service
Monday - Friday, 9:00 am - 4:00 pm EST-USA
Metadata Standard Name
FGDC Content Standards for Digital Geospatial Metadata
Metadata Standard Version
FGDC-STD-001-1998
Metadata Extensions
Online Linkage
http://www.esri.com/metadata/esriprof80.html
Profile Name
ESRI Metadata Profile
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