tailieunhanh - Quantitative Methods and Applications in GIS - Chapter 4

Làm mịn không gian và không gian nội suy Chương này bao gồm hai Nhiệm vụ chung chung hơn trong phân tích không gian based GIS: không gian làm min và nội suy không gian. Không gian làm min và nội suy không gian liên quan chat che and not cả hai hữu ích to hình dùng model hình không gian và làm nổi bật xu direction không gian. Một số phương solution (for example, hạt nhân dự toán) có be sử dụng trong không gian làm Min or nội suy. Có loại làm min không gian and the method nội. | Part II Basic Quantitative Methods and Applications 4 GIS-Based Trade Area Analysis and Applications in Business Geography and Regional Planning No matter how good its offering merchandising or customer service every retail company still has to contend with three critical elements of success location location and location Taneja 1999 p. 136 . Trade area analysis is a common and important task in the site selection of a retail store. A trade area is simply the geographic area from which the store draws most of its customers and within which market penetration is highest Ghosh and McLafferty 1987 p. 62 . For a new store the study of proposed trading areas reveals market opportunities with existing competitors including those in the same chain or franchise and helps decide on the most desirable location. For an existing store it can be used to project market potentials and evaluate the performance. In addition trade area analysis provides many other benefits for a retailer determining the focus areas for promotional activities highlighting geographic weakness in its customer base projecting future growth and others Berman and Evans 2001 pp. 293-294 . There are several methods for delineating trade areas the analog method the proximal area method and the gravity models. The analog method is nongeographic and more recently is often implemented by regression analysis. The proximal area method and the gravity models are geographic approaches and can benefit from GIS technologies. The analog and proximal area methods are fairly simple and are discussed in Section . The gravity models are the focus of this chapter and are covered in detail in Section . Because of this book s emphasis on GIS applications two case studies are presented in Sections and to illustrate how the two geographic methods the proximal area method and the gravity models are implemented in GIS. Case study 4A draws from traditional business geography but with a fresh angle instead of the .