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Digital Chart of the World (DCW)

The Digital Chart of the World (DCW) is a global database containing 1.7 gigabytes of vector data frequently used in geographic information systems (GIS). The primary data source was the U.S. Defense Mapping Agency (DMA) Operational Navigation Chart (ONC) series (1:1 million scale) and six Jet Navigation Charts (JNCs) (1:2 million scale), the latter covering the Antarctic region. DMA is now the National GeospatialIntelligence Agency (NGA). The data was originally released in 1992 on four compact discs in Vector Product Format (VPF), a data format standard that was created during the project. The data was delivered together with data display software called VPFVIEW. DMA contracted for the work in 1989 with a team led by Environmental Systems Research Institute, Inc. (ESRI), of Redlands, California.

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