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World Urban Areas, 1997
- Identification Information
- Data Quality Information
- Spatial Data Organization Information
- Spatial Reference Information
- Entity and Attribute Information
- Distribution Information
- Metadata Reference Information
- Identification Information
- Citation
- Originator
- National Imagery and Mapping Agency.
- Publication Date
- 1997
- Title
- World Urban Areas, 1997
- Geospatial Data Presentation Form
- vector digital data
- Publication Information
- Publication Place
- Fairfax, VA
- Publisher
- National Imagery and Mapping Agency
- Online Linkage
- https://www1.columbia.edu/sec/acis/eds/dgate/studies/C1301/data/landinfo_world_urbanareas_1997.zip
- Abstract
- Urban Areas is a polygon theme representing Urban Areas throughout the world. This dataset is a potion of the Vector Map Level 0 database. The Vector Map (VMap) Level 0 database represents the third edition of the Digital Chart of the World. VMap Level 0 is a comprehensive 1:1,000,000 scale vector 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 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.
- Purpose
- The VMap Level 0 is a general purpose global database designed to support Geographic Information Systems applications.
- Temporal Extent
- Currentness Reference
- publication date
- Time Instant
- 1997
- Bounding Box
- West
- -179.129608
- East
- 178.443253
- North
- 70.992729
- South
- -53.167423
- Theme Keyword
- society
- Theme Keyword Thesaurus
- ISO 19115 Topic Categories.
- Theme Keyword
- Urban areas
- Cities
- Populated Places
- Metropolitan areas
- Theme Keyword Thesaurus
- None
- Place Keyword
- World
- Place Keyword Thesaurus
- Library of Congress Subject Headings
- Temporal Keyword
- 1997
- Temporal Keyword Thesaurus
- None
- Access Restrictions
- For current Columbia affiliates only.
- Use Restrictions
- For educational, non-commercial use only.
- Status
- Complete
- Maintenance and Update Frequency
- Unknown
- Point of Contact
- Contact Organization
- LAND INFO Worldwide Mapping, LLC
- Delivery Point
- PO Box 261961
- City
- Highlands Ranch
- State
- CO
- Postal Code
- 80163-1951
- Country
- USA
- Contact Telephone
- 303-790-9730
- Contact Electronic Mail Address
- sales@landinfo.com
- Native Data Set Environment
- Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.6.1500
- 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 horizontal 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
- 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
- 1,000,000
- 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
- ground condition
- 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
- 37302
- Spatial Reference Information
- Horizontal Coordinate System Definition
- Geographic
- Latitude Resolution
- 0.000000
- Longitude Resolution
- 0.000000
- 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
- Entity and Attribute Information
- Entity Type
- Entity Type Label
- builtupa
- Entity Type Definition
- Urban Areas
- Attributes
- FID
- Internal feature number. (Sequential unique whole numbers that are automatically generated.)
- Definition Source
- ESRI
- Shape
- Feature geometry. (Coordinates defining the features.)
- Definition Source
- ESRI
- AREA
- Area
- PERIMETER
- Perimiter
- PPPYTYPE
- PPPTNAME
- Name
- Distribution Information
- Distributor
- LAND INFO Worldwide Mapping, LLC
- Name
- Metadata Reference Information
- Metadata Date
- 20080929
- Metadata Contact
- Contact Information
- Contact Organization Primary
- Contact Organization
- Research Data Services (RDS), Columbia University Libraries
- Contact Person
- GIS/Metadata Librarian
- Contact Address
- Address
- 420 W. 118th St., 215 IAB, MC 3301
- City
- New York
- State or Province
- NY
- Postal Code
- 10027
- Contact Voice Telephone
- (212)854-6012
- Contact Electronic Mail Address
- data@library.columbia.edu
- Metadata Standard Name
- FGDC Content Standards for Digital Geospatial Metadata
- Metadata Standard Version
- FGDC-STD-001-1998
