Abstract

Facility location and area-marketing analysis by Geographical Information System(GIS) frequently require distance from facility to user and aggregated user population in areas of concem. This is usually based on estimating the user distribution from the aggregated population data for each area consisting of unit areas which is assumed that the user distributes evenly. However, for the spread of much more detailed geographical data available for certain urban areas, we do not estimate only the user distribution incorporating aggregated data approximately but also estimate it as points data of individual buildings in the area. In this paper we confirm the effectiveness of this latest approach by comparing its result to that produced by the convertional method of data aggregation.

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