[Mapserver-users] MapServer, routing/driving directions, TIGER data

Caffeinate The World mochaexpress at yahoo.com
Wed Feb 19 13:25:16 EST 2003


> I downloaded the TIGER Line files for Utah, loaded them into a MySQL
> database, and have perl script to quickly (.5 sec) find their
> lat/long
> based on their street address (with city or zipcode).

I've been meaning to do this address to lat and long. Which files did
you parse from the TigerLine? How did you normalize the various ways
street names could be entered? Is your code available?

> So, I need to use a router recursive algorithim to find the shortest
> route of TIGER street vectors between the two points to get driving
> directions.  Anyone have a good way to do this?

Shortest route doesn't always mean the fastest route. :)

You can't do this with TigerLine data alone. You'll need additional
feature data that will tell you:

1. direction flow of the street traffic
2. turns at each intersection
3. speed allowed on each street


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