Affiliation: | (1) Geographic Information Systems Department, Hitachi Software Engineering, 6-81 Onoe-cho, Naka-ku, Yokohama 231-0015, Japan;(2) Centre for Spatial Information Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan;(3) Department of Geography, Tokyo Metropolitan University, Minami-Osawa, Hachioji, Tokyo, Japan;(4) Department of Urban Engineering, University of Tokyo, 7-3-1Hongo, Bunkyo-ku, Tokyo 113-8656, Japan |