by Manojit Sarkar, Manojit Sarkar, Marc H. Brown, Marc H. Brown
ftp://wilma.cs.brown.edu/pub/techreports/93/cs93-40.ps.Z
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Abstract:
The images on the preceeding page are views of a graph representing the Paris Metro system. The vertices in the graph are the stations, and the edges are the connections between stations. All images are screen dumps from the prototype system described in this paper. The upper-left image is a normal view of the Metro; the other images are fisheye views of the Metro. In all graphs, the a priori importance (API) assigned to each station is the number of connecting stations. In the upper-right image, the sizes of vertices vary according to the API of each station. The focus is the Montparnasse-Bienvenue station, displayed as a hollow circle. The user selects a focus by clicking with the mouse. In the lower-right image, the vertices that are close (using Euclidean distance) to the focus station are magnified, and those far away are shrunk. In addition, the locations of all vertices are changed slightly in order to give the larger vertices more space. In the lower-left image, the focus station is changed to be Republique, and
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