Thanks Noel - the scale would be meters rather, but I somehow assumed that this 
might be too small-scale for GPS ...

I guess I really ought to compare both measures, but for the GPS part, I wonder 
what would be the most "architecturally adequate" way to adapt 'world-updater' 
s contract to handle the additional geolocation field (and the other fields 
currently unused, possibly).

ciao,
Sigrid



Am 02.11.2010 um 22:08 schrieb Noel Welsh:

> I don't /really/ know, but isn't one reading from the accelerometer
> and the other from GPS? The answer depends, I think, on the distance
> over which you want to operate. If you want velocity from, e.g., hand
> movements, the accelerometer is the way to go. If you want velocity
> over large scale (metres, kms) use GPS.
> 
> HTH,
> N.
> 
> On Tue, Nov 2, 2010 at 5:52 PM, keyd...@gmx.de <keyd...@gmx.de> wrote:
>> 
>> Hi,
>> I am wondering how best to calculate velocity in a moby/phonegap/android 
>> application.
>> In general, would anyone have experience (or intuition) whether velocity 
>> might better be calculated from the acceleration values delivered by 
>> phonegap's Acceleration object, or directly be extracted from the Position 
>> object returned from Geolocation (it has a field 'velocity')?

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