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On a Class of Map Transformations
Author(s) -
Sen Ashish K.
Publication year - 1976
Publication title -
geographical analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.773
H-Index - 65
eISSN - 1538-4632
pISSN - 0016-7363
DOI - 10.1111/j.1538-4632.1976.tb00526.x
Subject(s) - contiguity , construct (python library) , class (philosophy) , scale (ratio) , computer science , mathematics , cartography , artificial intelligence , geography , programming language , operating system
This paper considers contiguity preserving map transformations (or cartograms) that have a preassigned arcal scale. Because for each such scale it is possible to construct infinitely many transformations, this paper investigates restrictions under which such cartograms are possible. It is shown that it is possible to construct transformations that preserve the location of boundaries and of any finite number of predefined points. However, these cartograms are often quite distorted. Different types of distortions and suitable measures are discussed.