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Dear all, I am very happy to see so many responses on the real time maps (I was away for the Chinese new year break). I have a project to track people's daily trajectory pattern and then analyze it for city planning. Now the most difficult thing is how to get the trajectory datasets. One simple way would be to collaborate with cell phone operators, and ask them to release all trajectories in one particular geographic area. But it seems difficult, simply phone company would not cooperate if there is no direct benefit. Another way would be to invite individual people to voluntarily participate, and asked them to send an SMS to individual respective phone operators to release the trajectory datasets. Anyone there had such an experience to share? Would the cell phone operators have such duty to do so? Many thanks in advance. Cheers. Bin SteveC wrote: > Tom Carden wrote: > >> feeds of live cab locations in San Francisco. I believe Google >> offers maps of the same for most US cities, but I don't know how >> accessible the data is. > > There's a hack for that in google maps hacks from oreilly. > > have fun, > > SteveC [log in to unmask] http://www.asklater.com/steve/ > -- -------------------------------------------------------- Bin Jiang Division of Geomatics Dept. of Technology and Built Environment University of Gävle, SE-801 76 Gävle, Sweden Phone: +46-26-64 8901 Fax: +46-26-64 8828 Email: [log in to unmask] Web: http://www.hig.se/~bjg/ -------------------------------------------------------- NordGISci: http://www.hig.se/~bjg/NordGISci/ NordGISci2007: http://www.hig.se/~bjg/NordGISci2007/ ICA Workshop: http://www.ggy.uga.edu/people/faculty/xyao/Workshop2007/