Re: [android-developers] Barometer reading changes throughout the day while on same altitude.

On Sun, Dec 30, 2012 at 8:14 AM, sebouh00 <sebouh00@gmail.com> wrote:
> I would like to save the altitude in my app and use it to check if the
> device is at the same altitude in the future. Using GPS will not be
> applicable because of minimal power usage restrictions in my app.

What tests have you run to determine that the barometer is
sufficiently lower power than the GPS radio? I suspect it is, but I
have never tried testing the scenario.

> Would it be possible to do such a thing?

IMHO, not reliably. If you are trying to get altitude accuracy +/- 500
meters or so, perhaps.

http://en.wikipedia.org/wiki/Atmospheric_pressure
http://en.wikipedia.org/wiki/Altimeter

Moreover, none of this has anything to do with Android, and it smacks
of premature optimization, unless you have already implemented the
GPS-based solution and proven that the power consumption is over your
budget.

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Mark Murphy (a Commons Guy)
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sviluppo di applicazioni Android: http://www.andglobe.com

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