北海道地理
Online ISSN : 2186-5426
Print ISSN : 0285-2071
ISSN-L : 0285-2071
空間データにおけるネットワークボロノイ領域の分析方法
相馬 絵美橋本 雄一
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ジャーナル フリー

2006 年 2006 巻 81 号 p. 29-37

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This study discusses applications of Network Voronoi diagrams for spatial analyses. I compared Network Voronoi diagrams with plane Voronoi diagrams. This method does not make network cells on the line of the network, but makes areas using network distance. In this method, a plane Voronoi region is made for every node on a street network. The nodes have the nearest shelter point from them by network distance, and the shelter point holds the area of those nodes and makes one region, a Network Voronoi region. This method can overlay the point data on a plane and a network, and we represent moving by the nearest street. As a case study, I calculate the shortage of shelters' capacity using Network Voronoi diagrams. The study area is central Sapporo city. In this case, a Network Voronoi region represents the area that residents move to near shelters on street. This result shows applications of this method, Network Voronoi diagram for spatial analyses.

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