Computer representation of planar regions by their skeletons
Communications of the ACM
Computer storage of contour-map data
ACM '68 Proceedings of the 1968 23rd ACM national conference
Bibliography on data base structures
ACM SIGMIS Database
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There has been growing interest in dealing with large-seale geographic data bases because of the growing capacities of computer systems and because of the increasing interest in environmental and social systems. This paper outlines the problems associated with these data bases from data acquisition to simulators and information retrieval. It outlines an overall approach to the problem using polygons, point data, and common coordinate systems. It explains a method of grid independent data observation. It also deals with a variety of specific problems of file management and information handling which arise in large-scale information systems dependent on data of a two-dimensional structure, as opposed to data of a linear or hierarchical structure.