On Thu, 2009-01-15 at 16:57 +0000, Simon McVittie wrote: > > I believe the idea is that this lets you express what the accuracy of > your location source is, even if you're using something considerably > less accurate than GPS (e.g. a client might use GeoIP to guess from > the IP address what country the user is in, then set the lat/long to > somewhere in the middle of that country, without knowledge of how > large each country is).
Exactly, a sample case is when your position is determined by your
network IP address. Geoclue can provide you with Country/Region/City.
It will also provide a lon/lat position for that city. Geoclue provides
an accuracy level to inform the consumer that this position is precise
to a city scale.
Such a field could be an improvement to the XEP. Geoclue provides the
following levels:
GEOCLUE_ACCURACY_LEVEL_NONE,
GEOCLUE_ACCURACY_LEVEL_COUNTRY,
GEOCLUE_ACCURACY_LEVEL_REGION,
GEOCLUE_ACCURACY_LEVEL_LOCALITY,
GEOCLUE_ACCURACY_LEVEL_POSTALCODE,
GEOCLUE_ACCURACY_LEVEL_STREET,
GEOCLUE_ACCURACY_LEVEL_DETAILED,
where horizontal and vertical error is available on _DETAILED.
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