Fuzzy Sets for Representing the Spatial and Temporal Dimensions in GIS Databases

  • Suzana Dragićević


Geographic phenomena are dynamic and any effort to study, analyze, and predict them must consider both the space and time dimension. Space can be defined based on an absolute or a relative framework. According to the absolute view, space is a container in which objects are located; its structure is best described by the familiar and common three-dimensional Euclidean geometry. The relative view focuses on objects as the subject matter, and space is measured as relationships between objects. While the absolute view involves measurement referenced to a constant base with non-judgmental observations, the relative view implies interpretation of patterns and processes within specific contexts [47, 50]. Time can be described as the absolute linear line on which events occur and on which intervals between events can be measured. Space is three-dimensional and physically perceptible while time is understood as a unidirectional continuous flow. Both geography and cartography deal with space and time, and their relationships with various geographic phenomena. If there is no understanding of time and its impacts, geographers could not analyze and understand spatial changes nor cartographers able to represent these changes on maps [61].


Geographical Information System Temporal Dimension Fuzzy Membership Function Membership Grade Fuzzy Function 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Suzana Dragićević
    • 1
  1. 1.Spatial Analysis and Modeling Laboratory, Department of GeographySimon Fraser UniversityBurnabyCanada

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