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Categorizing Binary Topological Relations Between Regions, Lines, and Points in Geographic Databases
TLDR
This research was partially funded by NSF grant No.Abstract:
This research was partially funded by NSF grant No. IRI-9309230 and grants from Intergraph Corporation. Additional support from NSF for the NCGIA under No. SBR-9204141 is gratefully acknowledged. Max J. Egenhofer University of Maine, National Center for Geographic Information and Analysis and Department of Surveying Engineering, Department of Computer Science, University of Maine, Orono, ME 04469-5711, max@mecan1.maine.eduread more
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Reasoning about Binary Topological Relations
TL;DR: A new formalism is presented to reason about topological relations based upon the nine intersections of boundaries, interiors, and complements between two objects that is applicable as a foundation for an algebra over topological Relations.
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SEQUEL 2: a unified approach to data definition, manipulation, and control
Donald D. Chamberlin,Morton M. Astrahan,Kapali P. Eswaran,P. P. Griffiths,Raymond A. Lorie,J. W. Mehl,Phyllis Reisner,B. W. Wade +7 more
TL;DR: SEQUEL 2 is a relational data language that provides a consistent, English keyword-oriented set of facilities for query, data definition, data manipulation, and datac ontrol.
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A Small Set of Formal Topological Relationships Suitable for End-User Interaction
TL;DR: The first method is an extension of the geometric point-set approach by taking the dimension of the intersections into account, which results in a very large number of different topological relationships for point, line, and area features.