On Wed, Dec 8, 2010 at 6:18 PM, XINLI LI <lihaw...@gmail.com> wrote: > Thank you very much, I will look into it.
If it really is only 200 then I'd start typing them into Google's direction finder and typing in the distance/time given. Even if you only do one per minute they'll all be done in half a day easily. Job done. If it is going to be 20,000 then you either need a small army or some way of automating the process. I could give you my python code that scripted the process to both Google's Routing and an OpenStreetMap routing service (made for some interesting comparisons), but I just tried them again and they are both broken - probably because you're not supposed to script these things anyway. Small armies are available for hire via Amazon's "Mechanical Turk" service. Or find some grad students willing to do it for food. Barry ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
