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Time Geographic Network Modeling for Restraint Space of Transportation Network

Authors:
Zhang-cai Yin
Qian-yao Duan
Hua-tao Sun
Qing-quan Liu
Yu Bao
Zhi-qiang Wang

Keywords: network mode; irregular triangle network; field; space-time mode; raster

Abstract:
Time geographic accessibility in heterogeneous space can be converted to the shortest path problem. Based on raster grids, current time geography theory analyzes the shortest path among grid cells by using 8-neighbor mode (network). However, due to the irregularity of transportation network, the network is not constantly included in 8-neighbor network. This means neighbor network paths are different from continuous-space paths in location and length, and as cause a time distance error. In order to address this problem, the paper focuses on the restraint space of irregular transportation network, and introduces Voronoi diagram grid. Then, we establish a neighbor network model based on Delaunay Triangulated Irregular Network to contain transportation network. This means neighbor network paths can converge to continuous-space paths under the same condition of start and end, and as decrease a time distance error. As a result, the shortest path between Thiessen polygons is calculated with less error of time distance. Thus, we have the apporach to model time geographic network for restraint space of transportation network. This article also describes implementation of the models using ArcGIS 9.3 with a real transportation network as a way of validation.

Pages: 93 to 98

Copyright: Copyright (c) IARIA, 2013

Publication date: February 24, 2013

Published in: conference

ISSN: 2308-393X

ISBN: 978-1-61208-251-6

Location: Nice, France

Dates: from February 24, 2013 to March 1, 2013