Re: How To Get Elevations From GE ??

Bitstring <o8s9n3puqnl3fq12lp8ct6nb73h2js1gvs@xxxxxxx>, from the wonderful person Happy Trails <nomail@xxxxxxxxxxx> said
On Thu, 27 Dec 2007 18:13:58 GMT, renum <renum@xxxxxxxxxxx> wrote:

Happy Trails wrote:
Is there any way to extract elevation info from Google Earth for a set
of points or lines, to use in another program to make contour lines,
etc?

There is a COM Api available for google earth, but I don't think that is
the most convenient way of creating a topo map for your GPS.
There is worldwide DEM available to download for free, the resolution is
30m, whereas there is higher resolution DEM available for the US only
(10m I think) The worldwide data isn't perfect, but that is the best
there is.


I read the world-wide dem info as 30 arc-seconds, which (I believe?)
it explains as a distance much greater than 30m - half a km or a km or
something.

If we're talking NASA SRTM DEM data then the non-USA stuff is 3 arc seconds, which is just about 90m (worst case .. rather less East/West as you get away from the equator). USA data is 1 arc second.

--
GSV Three Minds in a Can
10,414 Km walked. 2,032 Km PROWs surveyed. 36.9% complete.
.