Paper Info
Title
Fuzzy Representation Of Geographical Boundaries In Gis
Abstract
Polygon boundaries on thematic maps are conventionally considered to be sharp lines representing abrupt changes of phenomena. However, in reality changes of environmental phenomena may also be partial or gradual. Indiscriminate use of sharp lines to represent different types of change creates a problem of boundary inaccuracy. Specifically, in the context of vector-based GIS, use of sharp lines to represent gradual or partial changes may cause misunderstanding of geographical information and reduce analysis accuracy.In this paper, the expressive inadequacy of the conventional vector boundary representation is examined. A more informative technique-the fuzzy representation of geographical boundaries-is proposed, in which boundaries describe not only the location but also the rate of change of environmental phenomena. Four methods of determining fuzzy boundary membership grades from different kinds of geographical data are described. An example of applying the fuzzy boundary technique to data analysis is presented and the advantages of the technique are discussed.
Year
DOI
Venue
1996
10.1080/02693799608902098
INTERNATIONAL JOURNAL OF GEOGRAPHICAL INFORMATION SYSTEMS
Keywords
DocType
Volume
thematic maps,rate of change,boundary representation,data analysis
Journal
10
Issue
ISSN
Citations 
5
0269-3798
35
PageRank 
References 
Authors
5.23
4
2
Name
Order
Citations
PageRank
Fangju Wang116225.35
B. Hall213321.11