Nhiều phương pháp tiếp cận để đánh giá trang web đã được phát triển trong địa lý để đánh giá các trang web về nhà ở và các cơ sở bán lẻ (Orford, năm 1999; Jones và Simmons, 1990). Những phương pháp tiếp cận đánh giá một trang web trong điều khoản của hai yếu tố, chẳng hạn như trang web riêng của mình và vị trí của nó. Yếu tố trang web có liên quan đến rất nhiều trong đó cơ sở có thể được đặt và môi trường vật lý trực tiếp liên quan đến cơ sở. Yếu tố vị trí được. | 19 Visualization for Site Assessment Hiroyuki Kohsaka and Tomoko Sekine CONTENTS Introduction .279 Multilevel Measures of Accessibility and Its Spatial Variation within Residential Accessibility Measured at the Residential-District Accessibility Measured at 100 M Mesh Visualization of Spatial Variation in Accessibility within a Residential Bivariate Map of Accessibility and Its Variability 285 Composite Map of Accessibility by Two-Level Accessibility Map at Variable Spatial Measure of Accessibility by Highly Accurate Simulation and Its Population as Demand Development of Road Measure of Navigation Road Distance by Highly Accurate Simulation Considering Complex Traffic Introduction Numerous approaches for site assessment have been developed in geography to evaluate sites for housing and retail facilities Orford 1999 Jones and Simmons 1990 . These approaches evaluate a site in terms of two factors 279 Copyright 2006 Taylor Francis Group LLC 280 GIS-based Studies in the Humanities and Socail Sciences such as the site itself and its location. Site factor is related to the lot in which a facility may be located and the physical environment directly related to the facility. Location factor is connected with its surrounding which provides opportunity of use or demand. Recently site-assessment approaches have been performed on GIS to handle very complicated consumer markets Bir-kin et al. 2004 . Accessibility is one of the major elements for the location factor in site assessment. Accessibility is measured from two sides demand and supply. The measure of accessibility from the residential site to retail and service facilities is related to evaluate a housing site from the demand side. Five types of accessibility measures .
