[Geowanking]Altitude, yep

[Mike Liebhold]

There's a good summary table of US Digital Elevetion Models and data 
resources at

http://www.whitestar.com/ded.html

In some cases, using metric measurements in flat areas can cause a 
stair-step effect...Most ofthis data is_free_.

Daniel Smith wrote:

>
> I've been thinking about the Altitude component of
> ThereThen addresses.  I almost dropped it entirely, but
> decided instead to say "always in meters":
> http://javajoint.com/archives/categories/webtech/index.html
>
> How are others handling altitude in their apps?  Ignore
> it?  Pretend the whole world does feet?  meters?
> What do you do for a default when no altitude is
> specified?
>