Simon Tennant wrote: > Stephen Pendleton wrote: >> Very cool. >> Question for the authors: Are you really using arc-minutes as units of the >> GPS error or is that carryover from the GEOLOC XEP? > > Props should go to Helge for the spec. I guess that writing > specifications for unmanned aerial vehicles is finally paying off. > > I presume you are referring to this post: > http://mail.jabber.org/pipermail/standards/2008-October/019920.html > > Arc-minutes are a carry over. We wrote the spec with XEP-0080 in mind > and use that as the format for publishing the derived location to the > user's geoloc node too. > > We would prefer to use accuracy in meters. While arc minutes may make > sense in a GPS sense, accuracy often has to be implied when using other > location means. > > For example, if the server is receiving Cell-ID beacons and some of the > known beacons are identified as within a city an accuracy of 100m could > be implied due to a known higher tower density. Trying to apply > arc-minutes to this would probably end up just being clumsy and it would > be nice to use the same unit of measurement for accuracy.
So use the new <accuracy/> element, which measures in meters: http://xmpp.org/extensions/xep-0080.html#format Peter -- Peter Saint-Andre https://stpeter.im/
