Weighted radial dimension: an improved fractal measurement for highway transportation networks distribution

Yongjiu Feng; Miaolong Liu; Xiaohua Tong

doi:10.1117/12.761348

26 July 2007 Weighted radial dimension: an improved fractal measurement for highway transportation networks distribution

Yongjiu Feng, Miaolong Liu, Xiaohua Tong

Author Affiliations +

Proceedings Volume 6753, Geoinformatics 2007: Geospatial Information Science; 67530O (2007) https://doi.org/10.1117/12.761348
Event: Geoinformatics 2007, 2007, Nanjing, China

Abstract

An improved fractal measurement, the weighted radial dimension, is put forward for highway transportation networks distribution. The radial dimension (DL), originated from subway investigation in Stuttgart, is a fractal measurement for transportation systems under ideal assumption considering all the network lines to be homogeneous curves, ignoring the difference on spatial structure, quality and level, especially the highway networks. Considering these defects of radial dimension, an improved fractal measurement called weighted radial dimension (D_WL) is introduced and the transportation system in Guangdong province is studied in detail using this novel method. Weighted radial dimensions are measured and calculated, and the spatial structure, intensity and connectivity of transportation networks are discussed in Guangdong province and the four sub-areas: the Pearl River Delta area, the East Costal area, the West Costal area and the Northern Guangdong area. In Guangdong province, the fractal spatial pattern characteristics of transportation system vary remarkably: it is the highest in the Pearl River Delta area, moderate in Costal area and lowest in the Northern Guangdong area. With the Pearl River Delta area as the centre, the weighted radial dimensions decrease with the distance increasing, while the decline level is smaller in the costal area and greater in the Northern Guangdong province. By analysis of the conic of highway density, it is recognized that the density decrease with the distance increasing from the calculation centre (Guangzhou), demonstrating the same trend as weighted radial dimensions shown. Evidently, the improved fractal measurement, weighted radial dimension, is an indictor describing the characteristics of highway transportation system more effectively and accurately.

Citation Download Citation

Yongjiu Feng, Miaolong Liu, and Xiaohua Tong "Weighted radial dimension: an improved fractal measurement for highway transportation networks distribution", Proc. SPIE 6753, Geoinformatics 2007: Geospatial Information Science, 67530O (26 July 2007); https://doi.org/10.1117/12.761348

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