The City Form Research Group at MIT has released a state-of-the-art toolbox for urban network analysis. It comes as ArcGIS 10 toolbox and can be used to compute five types of graph analysis measures on spatial networks: Reach; Gravity; Betweenness; Closeness; and Straightness. Due to a very tight time schedule this month, I had no time to test it yet but the Youtube video looks very promising and I would appreciate any reports from users.
