Vector Map Level 0 (DIGITAL CHART OF THE WORLD) METADATA LONG FORM


IDENTIFICATION INFORMATION

Citation:
	Originator: National Imagery and Mapping Agency
	Publication Date: 200009
	Title: Vector Map Level 0 (Digital Chart of the World)
	Edition: 5
	Geospatial Data Presentation Form: model
	Publication Information:
		Publication Place: Bethesda, MD
		Publisher: National Imagery and Mapping Agency
		Other Citation Details: NIMA Reference Numbers VMAP0EURNASIA, 
		VMAP0NOAMER, VMAP0SASAUS, VMAP0SOAMAFR

Description:
	Abstract: The Vector Map (VMap) Level 0 database represents the 
fifth edition of the Digital Chart of the World.  The third/fourth edition 
was published in 199701.  The product is dual named to show its lineage to 
the original DCW, published in 1992, while positioning the revised product 
within a broader family of VMap products.  VMap Level 0 (VMap0) 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 (CDROM).  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 include major road and rail networks, 
major hydrologic drainage systems, major utility networks (cross-country 
pipelines and communication lines), all major airports, elevation contours 
(metric equivalent of 1000 foot (ft), with 500ft and 250ft supplemental 
contours), coastlines, international and first order boundaries and populated 
places.  The database can be accessed directly from the four CDROMs that 
store the database or can be transferred to a magnetic media.  

	Purpose: The VMap0 is a general purpose global database 
designed to support Geographic Information Systems applications.

Time Period of Content:
	Time Period Information:
		Single Date: 200009
	Currentness Reference: Publication date

Status:
	Progress: Complete
	Maintenance and Update Frequency: Biennial

Spatial Domain:
	Bounding Coordinates:
		West Bounding Coordinate: -180.0
		East Bounding Coordinate: 180.0
		North Bounding Coordinate: 90.0
		South Bounding Coordinate: -90.0

Keywords: 
	Theme:
		Theme Keyword: Vector Map
		Theme Keyword: VMap
		Theme Keyword: DCW
		Theme Keyword: digital global basemap
		Theme Keyword: GIS database
		Theme Keyword: Global digital database
		Theme Keyword: CDROM
		Theme Keyword: rivers
		Theme Keyword: roads
		Theme Keyword: railroads
		Theme Keyword: international boundaries
		Theme Keyword: cities
		Theme Keyword: airports
		Theme Keyword: elevations
		Theme Keyword: contours
		Theme Keyword: coastlines
		Theme Keyword: populated places
		Theme Keyword: vegetation
	Place:
		Place Keyword Thesaurus: None
		Place Keyword: global coverage
		Place Keyword: world coverage

Access Constraints: None

Use Constraints: Cite National Imagery and Mapping Agency

Point of Contact:
	Contact Organization Primary:
		Contact Organization: National Imagery and Mapping Agency
		Contact Position: ATTN: COD, MS P-37
		Contact Address: 
			Address Type: mailing and physical
				Address: 4600 Sangamore Road
				City: Bethesda
				State: MD
				Postal Code: 20816-5003
				Country: US
		Contact Voice Telephone:
		Contact Facsimile Telephone:
		Contact Instructions: Users should refer corrections,  
		additions, or suggestions for improving this product to 
		the Contact Organization.

Security Information:
	Security Classification System: United States Department of Defense
	Security Classification: Unclassified
	Security Handling Description: Not Applicable


DATA QUALITY INFORMATION

Attribute Accuracy:
	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: VMap0 features depicted on the ONC source materials 
have been captured and have valid attribute codes assigned to them.

Positional Accuracy:
	Horizontal Positional Accuracy:
		Horizontal Positional Accuracy Report: The Horizontal  
	Positional Accuracy Value represents overall accuracy.  Source 
	chart-specific accuracies are available as area feature attributes 
	in the VMap0 data quality coverage.  The primary accuracy analysis 
	was performed on one chart only in the prototyping phase of the 
	DCW project.

	Quantitative Horizontal Positional Accuracy Assessment:
		Horizontal Positional Accuracy Value: 2040
		Horizontal Positional Accuracy Explanation: Detailed 
	horizontal accuracy figures were developed by comparing the 
	positions of well-defined points in road, railroad, utility 
	line, and drainage features 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.

	Vertical Positional Accuracy:
		Vertical Positional Accuracy Report: This figure represents 
	overall accuracy.  Source chart-specific accuracies are available 
	as area feature attributes in the VMap0 data quality coverage.

	Quantitative Vertical Positional Accuracy Assessment:
		Vertical Positional Accuracy Value: 152.4
		Vertical Positional Accuracy Explanation: Vertical accuracy 
	figures were developed by comparing elevation contour locations on 
	1:24,000 scale maps to elevation values at the same location within 
	the digital database.  Some manual interpolation was necessary to 
	complete this test.  The analysis results are expressed as linear 
	error at a 90% confidence interval.

Lineage: (Additional lineage data are available in the narrative table
associated with the Data Quality Table (dqt) called the Lineage Documentation 
File (lineage.doc).)

	Source Information: 
		Source Citation:
			Originator: National Imagery and Mapping Agency
				Publication Date: See "Source Time Period of 
				Content"
				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: 1,000,000
		Source Type of Media: stable-base material
		Source Time Period of Content:
			Source Time Period Information:
				Range of Dates/Times: 
					Beginning Date: 1974
					Ending Date: 1994
				Source Currentness Reference: Publication 
				dates
		Source Citation Abbreviation: ONC
		Source Contribution: All information found on the source with 
		the exception of aeronautical data

	Process Step:
		Process Description: For the first edition DCW, stable-based
positives were produced from the original reproduction negatives (up to 35 per
ONC sheet) these were digitized either through a scanning-raster to vector
conversion or hand digitized into vector form.  The vector data were then 
tagged with attribute information using ARC/INFO software. Transformation to
geographic coordinates was performed using the projection graticules for each
sheet. Digital information was edge matched between sheets to create large
regional datasets. These were then subdivided into 5 x 5 tiles and converted
from ARC/INFO to VPF.  The data was then pre-mastered for CDROM.  QC was
performed by a separate group for each step in the production process. For the
second edition, the DCW database was reprocessed in ARC/INFO for conversion 
to the VMap Level 0 format.  Updates were digitized from 19 ONC charts which 
had been revised since production of the first edition DCW.  For edition five 
the VMap0 data were retiled into two sizes; 15 x 15 for predominately land 
tiles and 30 x 30 for ocean tiles.

		Process Date: 199112
		Process Contact: 
	Contact Organization Primary:
	Contact Organization: Environmental Systems Research Institute
		Contact Position: Applications Division
		Contact Address: 
			Address Type: mailing and physical
				Address: 380 New York St.
				City: Redlands
				State: CA
				Postal Code: 92373
				Country: US
		Contact Voice Telephone: 909-793-2853
		Contact Facsimile Telephone: 909-793-5953

		Process Date: 199404
		Process Contact:
	Contact Organization Primary:
	Contact Organization: Geonex
		Contact Position:
		Contact Address:
			Address Type: mailing and physical
				Address: 8950 North 9th Ave.
				City: St. Petersburg
				State: FL
				Postal Code: 33702 
				Country: US
		Contact Voice Telephone: (813) 578-0100
		Contact Facsimile Telephone: (813) 577-6946

		Process Date: 200009
		Process Contact:
	Contact Organization Primary:
	Contact Organization: Environmental Systems Research Institute
		Contact Position: Applications Division
		Contact Address: 
			Address Type: mailing and physical
				Address: 380 New York St.
				City: Redlands
				State: CA
				Postal Code: 92373
				Country: US
		Contact Voice Telephone: 909-793-2853
		Contact Facsimile Telephone: 909-793-5953

	Source Information: 
		Source Citation:
			Originator: National Imagery and Mapping Agency
				Publication Date: 200001
				Title: Digital Aeronautical Flight Information
				File
				Geospatial Data Presentation Form: model
			Publication Information:
				Publication Place: St. Louis, MO
				Publisher: National Imagery and Mapping Agency
		Source Type of Media: CDROM
		Source Time Period of Content:
			Source Time Period Information:
				Single Dates/Times: 
					Calender Date: 2000
		Source Currentness Reference: Publication date
		Source Citation Abbreviation: DAFIF
		Source Contribution: Airport records (name, ICAO, position, 
		elevation, and type)

	Process Step:
		Process Description: Transferred digitally directly into the  
		VPF files.

		Process Date: 199408
		Process Contact: 
	Contact Organization Primary:
	Contact Organization: Geonex
		Contact Position: 
		Contact Address: 
			Address Type: mailing and physical
				Address: 8950 North 9th Ave.
				City: St. Petersburg
				State: FL
				Postal Code: 33702 
				Country: US
		Contact Voice Telephone: 813-578-0100
		Contact Facsimile Telephone: 813-577-6946

		Process Date: 200009
		Process Contact: 
	Contact Organization Primary:
	Contact Organization: Environmental Systems Research Institute
		Contact Position: Applications Division
		Contact Address: 
			Address Type: mailing and physical
				Address: 380 New York St.
				City: Redlands
				State: CA
				Postal Code: 92373
				Country: US
		Contact Voice Telephone: 909-793-2853
		Contact Facsimile Telephone: 909-793-5953

	Source Information: 
		Source Citation:
			Originator: National Imagery and Mapping Agency
				Publication Date: See "Source Time Period of 
				Content"
				Title: Jet Navigational Chart
				Geospatial Data Presentation Form: map
			Series Information:
			Publication Information:
				Publication Place: St. Louis, MO
				Publisher: National Imagery and Mapping Agency
		Source Scale Denominator: 2,000,000
		Source Type of Media: stable-base material
		Source Time Period of Content:
			Source Time Period Information:
				Range of Dates/Times: 
					Beginning Date: 1974
					Ending Date: 1991
				Source Currentness Reference: Publication date
		Source Citation Abbreviation: JNC
		Source Contribution: All information found on the source with 
		the exception of aeronautical data.  JNCs were used as source 
		for the Antarctica region only.

	Process Step:
		Process Description: Stable-based positives were produced 
from the original reproduction negatives (up to 35 per ONC sheet) and 
digitized either through a scanning-raster to vector conversion or hand 
digitized into vector form.  The vector data were then tagged with attribute 
information using ARC/INFO software. Transformation to geographic coordinates 
was performed using the projection graticules for each sheet. Digital 
information was edge matched between sheets to create large regional datasets.
These were then subdivided into 15 x 15 and 30 x 30 tiles and converted from 
ARC/INFO to VPF.  The data were then pre-mastered for CDROM.  QC was performed
by a separate group for each step in the production process.

		Process Date: 199112
		Process Contact: 
	Contact Organization Primary:
		Contact Organization: Environmental Systems Research Institute
		Contact Position: Applications Division
		Contact Address: 
			Address Type: mailing and physical
				Address: 380 New York St.
				City: Redlands
				State: CA
				Postal Code: 92373
				Country: US
		Contact Voice Telephone: 909-793-2853
		Contact Facsimile Telephone: 909-793-5953

	Source Information: 
		Source Citation:
			Originator: USGS EROS Data Center
				Publication Date: 
				Title: Advance Very High Resolution Radiometer
				Geospatial Data Presentation Form: remote 
				sensing image
			Publication Information:
				Publication Place: Sioux Falls, SD
				Publisher: EROS Data Center
		Source Scale Denominator: 1,000,000
		Source Type of Media: digital file
		Source Time Period of Content:
			Source Time Period Information:
				Range of Dates/Times: 
					Beginning Date: 199204
					Ending Date: 199303
				Source Currentness Reference: Publication date
		Source Citation Abbreviation: AVHRR
		Source Contribution: vegetation coverage

	Process Step:
		Process Description: Daily AVHRR images were averaged for a 
two week time period.  These averaged images, their rates of change, elevation
information, and other data were used to produce a single land classification
image of the whole world.
		Process Date: 199402
		Source Produced Citation Abbreviation: EROS data
		Process Contact: 
	Contact Organization Primary:
		Contact Organization: USGS Eros Data Center
		Contact Position:
		Contact Address: 
			Address Type: mailing and physical
				Address:
				City: Sioux Falls
				State: SD
				Postal Code:
				Country: US
		Contact Voice Telephone:
		Contact Facsimile Telephone:

	Process Step: 
		Process Description: The Eros data (raster files) were 
converted to vector polygon, splined (remove stairstepping), thinned (all 
polygons under 4 sq. km. were deleted), and intergrated with other coverage's 
polygons (water bodies, built-up areas). The vegetation polygons were clipped 
to ensure integration with VMap0 coastline.  The resulting file was tiled and 
converted to a VPF Vegetation coverage for use in the VMap0 Edition 5.  All 
processing was performed using ARC/INFO software.
		Process Date: 200003
		Source Produced Citation Abbreviation: VMap0 Vegetation 
		Coverage
		Process Contact: 
	Contact Organization Primary:
		Contact Organization: Environmental Systems Research Institute
		Contact Position: Applications Division
		Contact Address: 
			Address Type: mailing and physical
				Address: 380 New York St.
				City: Redlands
				State: CA
				Postal Code: 92373
				Country: US
		Contact Voice Telephone: 909-793-2853
		Contact Facsimile Telephone: 909-793-5953

	Source Information: 
		Source Citation:
			Originator: National Imagery and Mapping Agency
				Publication Date: 199904
				Title: GeoNet Names Server (GNS)
				Geospatial Data Presentation Form: model
			Publication Information:
				Publication Place: St. Louis, MO
				Publisher: National Imagery and Mapping Agency
		Source Type of Media: CDROM
		Source Time Period of Content:
			Source Time Period Information:
				Single Dates/Times: 
					Calender Date: 1999
				Source Currentness Reference: Publication date
		Source Citation Abbreviation: GNS
		Source Contribution: Some names for the Hydrography and 
		Population Coverages

	Process Step:
		Process Description: Using an overlay and/or buffer process, 
names from the GNS database were assigned to the VMap 0 populated place 
polygon features.  In situations where variant spellings were present, the 
names were assigned based on name type. The order of precedence for name type 
was conventional, native, and unverified.
		Process Date: 200003
		Process Contact: 
	Contact Organization Primary:
		Contact Organization: Environmental Systems Research Institute
		Contact Position: Applications Division
		Contact Address: 
			Address Type: mailing and physical
				Address: 380 New York St.
				City: Redlands
				State: CA
				Postal Code: 92373
				Country: US
		Contact Voice Telephone: 909-793-2853
		Contact Facsimile Telephone: 909-793-5953

	Source Information: 
		Source Citation:
			Originator: Environmental Systems Research Institute
				Publication Date: 199201
				Title: ArcWorld
				Geospatial Data Presentation Form: model
			Publication Information:
				Publication Place: Redlands, CA
				Publisher: Environmental Systems Research 
				Institute
		Source Type of Media: CDROM
		Source Time Period of Content:
			Source Time Period Information:
				Single Dates/Times: 
					Calender Date: 1999
				Source Currentness Reference: Publication date
		Source Citation Abbreviation: ArcWorld
		Source Contribution: First Order Administrative Areas in 
		the Boundaries Coverage

	Process Step:
		Process Description: Used to add first order administrative 
boundaries to the database. 
		Process Date: 200001
		Process Contact: 
	Contact Organization Primary:
		Contact Organization: Environmental Systems Research Institute
		Contact Position: Applications Division
		Contact Address: 
			Address Type: mailing and physical
				Address: 380 New York St.
				City: Redlands
				State: CA
				Postal Code: 92373
				Country: US
		Contact Voice Telephone: 909-793-2853
		Contact Facsimile Telephone: 909-793-5953


SPATIAL DATA ORGANIZATION INFORMATION

Direct Spatial Reference Method: Vector
	Point and Vector Object Information:
		VPF Terms Description:
			VPF Topology Level: 3
				VPF Point and Vector Object Type: node, edge, 
				face


SPATIAL REFERENCE INFORMATION:

Horizontal Coordinate System:
	Horizontal Coordinate System Definition:
		Geographic:
			Latitude Resolution: .000001
			Longitude Resolution: .000001
			Geographic Coordinate Units: Decimal degrees
			Geodetic Model:
				Horizontal Datum Name: WGS 84
				Ellipsoid Name: WGS 84
				Semi-major Axis: 6378137
				Denominator of Flattening Ratio: 298.257223563
	Vertical Coordinate System:
		Altitude System Definition:
			Altitude Datum Name: Mean Sea Level
			Altitude Distance Units: 1.0
			Altitude Encoding Methods: meters


ENTITY AND ATTRIBUTE INFORMATION

Overview Description:
	Entity and Attribute Overview: The DCW used a product-specific 
attribute coding system that was 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 were preceded by the two 
letter coverage abbreviation and a two letter abbreviation for the type of 
graphic primitive present.  VMap0 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): Philadelphia,
Department of Defense, Defense Printing Service Detachment Office.  VMap0 is
described in:  Department of Defense, Military Specification, Vector Map 
(VMap) Level 0 (MIL-V-89039), 9 Feb 1995.


DISTRIBUTION INFORMATION

Distributor:
	Contact Information:
		Contact Organization: NIMA 
				Contact Position: ATTN: COD, MS PS-37
				Contact Address: 
					Address Type: mailing and physical 
						Address: 4600 Sangamore Road
						City: Bethesda
						State: MD
						Postal Code: 20816-5003
						Country: US
		Contact Voice Telephone: 1-800-455-0899
		Contact Facsimile Telephone:
Resource Description:  NIMA Reference Numbers VMAP0EURNASIA, VMAP0NOAMER, 
		VMAP0SASAUS, VMAP0SOAMAFR
Distribution Liability: None 
Standard Order Process: 
	Digital Form:
		Digital Transfer Information:
			Format Version Name: Vector Product Format
				Format Version Date: 19960628
				Format Specification: Military Standard Vector
				Product Format (MIL-STD-2407).
			Digital Transfer Option:
				Offline Option: 
					Offline Media: CDROM
					Recording Format: ISO 9660
	Fees: Not Applicable
	Ordering Instructions: must have customer account number

Distributor:
	Contact Information:
		Contact Organization: USGS - Information Services
				Contact Address: 
					Address Type: mailing
						Address: Box 25286
						City: Denver
						State: CO
						Postal Code: 80225
						Country: US
		Contact Voice Telephone: 303-236-7477
		Contact Facsimile Telephone: 303-236-1972
	Fees: $100.00 per 4-disk set (Subject to change without notification.)
	Ordering Instructions: Payment (check, money order, purchase order, 
or Government account) must accompany order.  Make all drafts payable to 
Dept. of the Interior - US Geological Survey.


METADATA REFERENCE INFORMATION

Metadata Date: 20000930

Metadata Contact:
	Contact Organization: National Imagery and Mapping Agency
		Contact Position: ATTN: COD, MS PS-37
		Contact Address: 
			Address Type: mailing and physical 
				Address: 4600 Sangamore Road
				City: Bethesda
				State: MD
				Postal Code: 20816-5003
				Country: US
		Contact Voice Telephone:
		Contact Facsimile Telephone:
Metadata Standard Name: Federal Geographic Data Committee Content 
Standard for Spatial Metadata
Metadata Standard Version: 19980601