Draw a path in GE using the Add Path tool. Make sure you have evenly
spaced vertexes as you will get an elevation for each vertex. Save the
path as KML (Save Place as...)
Go here
http://www.gpsvisualizer.com/elevation and upload your kml
file. Select Convert and Add Elevation make sure you choose 'plain
text' for the output. Click the button.
A text file will be generated with X,Y, and Z data taken from SRTM
(90m) data. Copy the text, paste it into Excel and create a graph
using the elevation data for each point. Viola! a elevation profile
along the path with elevation points for each vertex.
Results are dependant on the spacing between vertexes so try to space
them evenly otherwise the horizontal scale will vary along the length
of the path.
Let me know how you get on. I am doing this stuff for a client who
needs to plan convoy movements and they seem happy with the results.
www.geospectrum.co.uk
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