Directional Variation in Distance Decay

A S Fotheringham and T C Pitts
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A S Fotheringham: Department of Geography, University of Newcastle, Newcastle upon Tyne NE1 7RU, England
T C Pitts: Department of Geography, Government and History, Morehead State University, KY, USA

Environment and Planning A, 1995, vol. 27, issue 5, 715-729

Abstract: Given that geographers excel at measuring and explaining spatial variations in attributes, it is surprising that they are not more aware that relationships may vary over space. It is still normal practice, for example, to estimate a set of parameters in a model and to assume that the relationships represented by these values apply equally to all locations and in all directions. Recently, however, there have been several applications of Casetti's expansion method that have been focused on measuring anisotropic trends around locations. Here this technique is used to examine possible anisotropy in distance-decay relationships around origins. That is, the authors attempt to answer the question: does the rate of distance decay vary with direction? The conclusions reached in previous research on this topic are only partially supported here. Via US migration data, it is suggested that although there is evidence of directional variation in distance decay around some origins, and this evidence leads to some interesting insights into the mental representation of space by US migrants, it is impossible to identify any overall trend across origins in directional variability.

Date: 1995
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Persistent link: https://EconPapers.repec.org/RePEc:sae:envira:v:27:y:1995:i:5:p:715-729

DOI: 10.1068/a270715

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