Peter Saint-Andre wrote: >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
Sorry for the slow response to this, got bogged down with some home improvement work (no worries, still have all my fingers :-) I will update to use the <accuracy/> element, and the world will be a better place. Helge
