Coupling land use allocation models with raster GIS |
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Authors: | Robert G Cromley Dean M Hanink |
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Institution: | (1) Department of Geography U-148, University of Connecticut, Storrs, CT 06269-2148, USA (e-mail: cromley@uconnvm.uconn.edu; hanink@uconnvm.uconn.edu), US |
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Abstract: | As geographic information systems (GIS) have moved from information storage and retrieval operations towards more decision
support functions, there is a need for more integration of spatial analytical modules that can assist in locational decisions.
This paper presents a methodology for coupling land use allocation models with a raster GIS. For raster systems, the integration
of any decision module has been limited by the size of raster datasets that may contain hundreds of thousands of pixels. Therefore,
decision heuristics have been used rather than exact methods such as mathematical programming models. For the problem of land
use allocation, the special structure of the generalized assignment problem is used here to handle large scale datasets. The
advantage of the mathematical programming approach is the additional information associated with the dual variables and opportunity
costs that can be used in subsequent sensitivity analyses.
Received: 7 April 1998/Accepted: 2 October 1998 |
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Keywords: | : Geographic information systems land use allocation generalized assignment problem multiobjective analysis |
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