The Projected Characteristics of a National Topographic Digital Databank

Timothy A. Adams · David Rhind

9 citations0/0 files storedGeographical Journal

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Geographic Information Systems Studies Historical Geography and Cartography 3D Modeling in Geospatial Applications

Abstract

Comparatively little is known concerning the likely characteristics of projected national digital topographic data bases. This paper describes an estimation of these characteristics for Great Britain, based on a sample of over 400 Ordnance Survey digital maps at 1 : 1250 and 1 : 2500 scales. The sources of the considerable uncertainty in the projections are discussed and it is concluded that some 3000 km of line work at map scale needs to be encoded to provide basic scale coverage apart from contours. With present Ordnance Survey methods of storage, this would require about 580 magnetic tapes.

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References

1975Ordnance Survey Maps: A Descriptive Manual 1973GENERALISATION AND REALISM WITHIN AUTOMATED CARTOGRAPHIC SYSTEMS

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1985Digital cartographic data standards; an interim proposed standard 1987Issues in digital cartographic data standards; Report 9; A final bibliography for digital data standards 1982Cartography and Mapping

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