In November 2001 the Ordnance Survey, Britain’s National Mapping Agency, launched the first release of OS MasterMap, the definitive digital map database for Great Britain. The initial data within OS MasterMap consisted of topographic points, lines and polygons, stored as 2-dimensional features in an object-oriented database. This paper outlines the structure of OS MasterMap; the current height ...

Current developments within the information technology industry are creating new opportunities for traditional information suppliers such as Ordnance Survey. In particular the ability to electronically trade information creates opportunities to increase the use of Ordnance Survey’s topographic information in ways that can be go beyond the delivery of such data in the form of a map. The future d...