Abstract:

Many spatial features do not have clearly defined boundaries. Also, in spatial analysis, we usually use concepts such as “somewhat steep” and “very close”, which are vague or uncertain, called fuzzy concepts. The representation of such features and spatial analysis involving fuzzy concepts in GIS using the classical set theory are not appropriate. Fuzzy logic is the most important and widely used tool for modeling fuzziness. This paper presents the basic notions and principles of fuzzy logic and its applications to the representation of fuzzy boundaries and fuzzy spatial analysis in GIS