Joshua A. Lewis, Max J. Egenhofer. Oriented Regions for Linearly Conceptualized Features. Geographic Information Science, Lecture Notes in Computer Science Volume 8728, 2014, pp 333-348. Abstract: The typical phenomena in geographic space are 2-dimensional or 3-dimensional in nature, yet people often conceptualize some of them as 1-dimensional entities embedded in a 2-dimensional space—rivers have widths and depths, and
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