MODELING ACCESSIBILITY USING SPACE-TIME PRISM CONCEPTS WITHIN GEOGRAPHICAL INFORMATION-SYSTEMS

The space-time of time geographical framework is a powerful perspective from which to analyse human behaviour. One of the central concepts in this framework is the space-time prism, which models individual accessibility to an environment. In this paper, the derivation and manipulation of space-time prism concepts within a geographical information system (GIS) are discussed. The required system inputs and desired outputs are identified and a generic GIS based procedure is presented. Given these basic requirements, issues are discussed which can determine the feasibility of current GIS technology to handle the derivation of space-time prism concepts. © 1991 Taylor & Francis Group, LLC.