Altitude data in gpx files: Units and accuracy

Craig's Avatar


09 Oct, 2018 03:26 AM

I configure the altitude module to show in feet. But when I export to GPX, it appears (as near as I can tell) to be in meters, with no fractional portion, resulting in an accuracy at best of +/- a meter. Is this a restriction of the gpx format that the altitude must always be in meters? And in whole meters? I know altitude accuracy vs GPS is not great, is that why it is limited to whole meters?

If I choose "Google maps assisted", is that giving the most accurate altitude data? I want to get the most accurate altitude data I can, as battery usage is not a concern for me. What are the settings that generate the most accurate data?

Out of curiosity, does Kinetic use the barometer on the iPhone at all, or does it deduce altitude strictly from the GPS data?

Thank you for any answers you can give to the above.

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