[UPHPU] databases for sale

[John]

> I hear what you guys are saying with the Long/Lat or Zip code mileage
> calculations, and taking in consideration the circumference of the
> earth; but that would tell me how many miles from Point A to Point B as
> the crow flies.
>
> What I'm needing is mileage data on the main highways. My customer is
> using PC Miler on their desktops, but I want to connect the data to the
> web apps I'm building. PC Miler has been less than helpful, but I
> haven't given up there either.

Timothy, you're right about it being as the crow flies.  The only thing I
can think of, is creating waypoints just like a GPS can.  If you can build
some logic into your app, where it follows streets and turns at
intersections, etc.  And then add up each waypoint, you could come up with
a pretty accurate distance.  But remember that with a zip code, it can
cover many square miles, and the lat/lon of a zip code may not be very
accurate when calculating a specific destination.

My understanding is that you would need the lat/lon of your destination
and not the zip to get an accruate distance, and of course logic to follow
streets only and not as the crow flies.

Thanks
John