[Telepathy] [Bug 19586] New: Location: improve XEP-0080 so we can stay closer to it :-)

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=19586

           Summary: Location: improve XEP-0080 so we can stay closer to it
                    :-)
           Product: Telepathy
           Version: unspecified
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: medium
         Component: telepathy-spec
        AssignedTo: pierre-luc at pierlux.com
        ReportedBy: simon.mcvittie at collabora.co.uk
         QAContact: telepathy at lists.freedesktop.org


The Location spec currently defines some extra keys "climb" (rate of change of
altitude in metres per second), "vertical-error-m" (some indication of vertical
error in metres), "horizontal-error-m" (some indication of horizontal error in
metres). These are struct fields in Geoclue, but there's no reason they
couldn't go in the list of well-known keys in XEP-0080; someone should contact
psa about this.

The names "*-error-m" are ugly, but are currently there to be unambiguous. If
we could get the XEP changed to have "horizontal-error" and "vertical-error"
which are definitely in metres, we could lose the "-m" suffix and be happier.

The XEP does contain "error" which is horizontal error in arc-minutes (1/60
degree). Does anyone care about arc-minutes, and can we perhaps get this
deprecated or removed or something? It seems like a win to indicate error in a
real unit (metres) rather than something whose size varies as you move around
the Earth!

We define an "accuracy-level" key in the same namespace: maybe we could ask psa
to avoid that name in the XEP, or maybe we could even put it in the XEP as an
enumerated thing, with values
'country'/'region'/'locality'/'postal-code'/'street'/'detailed'.


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