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Composing Models of Geographic Physical Processes

  • Barbara Hofer
  • Andrew U. Frank
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5756)

Abstract

Processes are central for geographic information science; yet geographic information systems (GIS) lack capabilities to represent process related information. A prerequisite to including processes in GIS software is a general method to describe geographic processes independently of application disciplines. This paper presents such a method, namely a process description language. The vocabulary of the process description language is derived formally from mathematical models. Physical processes in geography can be described in two equivalent languages: partial differential equations or partial difference equations, where the latter can be shown graphically and used as a method for application specialists to enter their process models. The vocabulary of the process description language comprises components for describing the general behavior of prototypical geographic physical processes. These process components can be composed by basic models of geographic physical processes, which is shown by means of an example.

Keywords

geographic physical processes process modeling process language GIS 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • Barbara Hofer
    • 1
  • Andrew U. Frank
    • 1
  1. 1.Department of Geoinformation and CartographyVienna University of TechnologyViennaAustria

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