On Mon, Sep 15, 2008 at 10:17 PM, Keith Sharp <[EMAIL PROTECTED]> wrote:
> I considered something similar to mapping lakes and lochs - use my GPS > with barometric altimeter to measure the elevation of the surface of the > water and then use the SRTM data to work out the contour that > corresponds to the edge of the water. Hey presto, instant loake or loch > map! > At least here, around Oslo, the SRTM data is not nearly accurate enough to do that. See, for instance, these lakes: http://www.openstreetmap.org/?lat=59.86084&lon=10.90939&zoom=15&layers=00B0FTF Regards, Gustav
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