Hi, Am interested in using the OS OpenData contour set for an augmented reality app for walkers (extension of the OpenTrailView idea). What I have in mind is to load them into a database and implement a lookup facility where the elevation at a particular lat/lon can be obtained by querying the dataset. I believe the OS contours are rather higher precision than SRTM, hence my interest in them, but to potentially save effort, has anyone done something like this already?
Thanks, Nick
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