Abstract
This paper focuses on the time distance as an index of regional structure, and shows a new method for presenting its structure visually. The method enables us to create a graph of regional structure, which treats each city as a point, and related time distance between cities as the length of an edge. Since constructing the network from any time distance data is generally difficult, some rules are set for constructing the graph. Two types of visualized time-distance networks are designed in this paper. One is minimum time-distance network and the other is delaunay time-distance network. Visualized time-distance network has below good points. It does not contain errors in the figure, it is easy to understand, and it can also visualize additional informations in the figure. To show these methods, the author uses as examples the visualized time-distance networks in Japan and Europe. Moreover, a necessary condition for constructing the graph is also explored.
