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git-svn-id: file:///home/ksmith/gitmigration/svn/xmpp/trunk@2107 4b5297f7-1745-476d-ba37-a9c6900126ab
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Peter Saint-Andre 2008-07-30 15:43:44 +00:00
parent 3b53d08f89
commit 72c717365a
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xep-0080.xml
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@ -314,7 +314,7 @@
<p>Avoid "Mars probe" issues: as specified in Table 1, the units for &lt;lat/&gt; and &lt;lon/&gt; MUST be decimal degrees (where South and West are negative, North and East are positive), the units for &lt;alt/&gt; MUST be meters above or below sea level, and the units for &lt;error/&gt; MUST be arc minutes.</p>
<p>In applications where updates are sent whenever there is a certain distance change in location, those applications SHOULD account for time as well, to avoid rate-limiting when the user is (for example) on a jet plane. One possible way to do this would be to send updates at most once per minute of time (every time 60 seconds have elapsed).</p>
<p>Inferences SHOULD NOT be made about accuracy from the number of digits specified in the location or altitude.</p>
<p>Why the datum madness? See &lt;<link url='http://www.jabber.org/protocol/geoloc/gps_datum.html'>http://www.jabber.org/protocol/geoloc/gps_datum.html</link>&gt; for an example.</p>
<p>Why the datum madness? See &lt;<link url='http://www.xmpp.org/extensions/gps_datum.html'>http://www.xmpp.org/extensions/gps_datum.html</link>&gt; for an example.</p>
<p>An entity can provide a GPS path by publishing a series of items (i.e., multiple pubsub events) with appropriate values of the &lt;timestamp/&gt; element.</p>
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