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Al's picture

Hello,

Thanks for your ideas on the subject, but the one problem is I don't have access to a device with a barometer.

I agree that calibration from a know altitude is a good start although more severe weather fluctuations could throw this too far out. Another option would be to use a site like Weather Underground to find a local pressure measurement and compensate for the altitude difference.

If I was going to implement this I think it would be more suitable in an app that logged a variety of sensors.  I'd like to keep GPX Logger as lightweight as possible as this is a plus point for many of my users.