THE CONCEPTION OF A SPACE RELATED INFORMATION SYSTEM FOR HUNGARY

Abstract

Since the 19th century the cadastral survey of Hungary has been performed. The maps haye been compiled in different scales, projections, grids and contents. In 1975 a new map system, the Unified Nation-wide Map System was established. Two kinds of maps created by direct sureying exist in the system: the first is the eadastral basic map in scales 1 : 1000, 1 : 2000, 1 : 4000 for cities, towns and ,viIlages, land without settlements, respectiycly. The second is the topographic map in scale 1 : 10000. In the end of the decade a pilot project has been started to compile digital maps for the city and some districts of the capital Bndapest all the basis of the cadastral basic map. Since the mid 80s we can observe the mushroomlike proliferation of position related digitized data for several purposes. A subcommission of the Academy of Sciences decided to have a unified conception worked out for position related digitized data systems meeting different demands. The conception worked out in March of 1988 among others is dealing with: -the data systems in this country operating or under development: -the meaning of the unified identifier (geocode) and its role in the development of space related informatics: - the technical contents of a nation-wide spatial information system and the tasks in developing the system: - the anticipated circumstances of maintenance of the system. The paper contains the most definitive statements in consideration of the topics listed ahove.