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IBM Journal of Research and Development  
Volume 7, Number 3/4, Page 331 (1968)
Interactive Graphics in Data Processing
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Interactive Graphics in Data Processing: Geometric relationships for retrieval of geographic information

by J. D. Jacobsen
Reported is an experimental technique that has been developed for retrieving, by geometrical means, information related to city maps. This paper emphasizes the analysis needed to translate a retrieval query into relationships among points, vectors, and polygons. An illustration of the technique is given.
Related Subjects: General Applications; Graphics and Image