<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p><br>
</p>
<div class="moz-cite-prefix">Am 19.05.2020 um 12:01 schrieb European
Water Project:<br>
</div>
<blockquote type="cite"
cite="mid:CAK=tSVcNTEMCraeS2HQJfCdU5RHNHG2ybRMcMuajUe+AYG1m7g@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">...<br>
<div>
<div>
<div>Dear Simon,</div>
<div><br>
</div>
<div>What do you mean by <span style="color:rgb(0,0,0)"> "</span><span
style="color:rgb(0,0,0)">+ version" ? Are you referring
to a timestamp or a something else ?</span></div>
</div>
</div>
</div>
</blockquote>
<p>The version of the object, so lets look at <br>
</p>
<p><a class="moz-txt-link-freetext" href="https://www.openstreetmap.org/node/416064315">https://www.openstreetmap.org/node/416064315</a> (version 7)</p>
<p>But you could equally simply lookup <br>
</p>
<p><a class="moz-txt-link-freetext" href="https://api.openstreetmap.org/api/0.6/node/416064315/7">https://api.openstreetmap.org/api/0.6/node/416064315/7</a> <br>
</p>
<p>or if you had an older version<br>
</p>
<p><a class="moz-txt-link-freetext" href="https://api.openstreetmap.org/api/0.6/node/416064315/4">https://api.openstreetmap.org/api/0.6/node/416064315/4</a> (version
4)</p>
<p>these links are guaranteed to always return the same object,
frozen in time.<br>
</p>
<p>Simon<br>
</p>
<p><br>
</p>
<blockquote type="cite"
cite="mid:CAK=tSVcNTEMCraeS2HQJfCdU5RHNHG2ybRMcMuajUe+AYG1m7g@mail.gmail.com">
<div dir="ltr">
<div>
<div>
<div><span style="color:rgb(0,0,0)"><br>
</span></div>
<div><span style="color:rgb(0,0,0)">For ways, which I am
only starting to look to consider, maybe I could look
for objects with a similar geometric center for the
replacement object. </span></div>
<div><span style="color:rgb(0,0,0)"><br>
</span></div>
<div><font color="#000000">Best regards,</font></div>
<div><font color="#000000"><br>
</font></div>
<div><font color="#000000">Stuart </font></div>
<div><br>
</div>
</div>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, 19 May 2020 at 11:41,
Simon Poole <<a href="mailto:simon@poole.ch"
target="_blank" moz-do-not-send="true">simon@poole.ch</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>It should be noted that (for Nodes) id + version is
actually stable (Ways and Relations are more complicated).</p>
<p>So if you have id + version, you can</p>
<p>- check that it is the current version of the object (all
fine and dandy)</p>
<p>- check if there is a later (undeleted) version, check if
it (depending on your criteria) is still the "same
object", update version in your reference</p>
<p>- if the last version is deleted or your criteria for it
being the same object doesn't hold, search in the vicinity
for a replacement object.</p>
<p>Doing the same for Ways and Relations requires including
a location reference of some kind as geometry changes are
not reflected in the versions, but can work in principle
the same.<br>
</p>
<p>Simon<br>
</p>
<div>Am 19.05.2020 um 09:43 schrieb European Water Project:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Dear All,
<div>
<div><br>
</div>
<div>I am looking for a way to create permanent links
to specific objects (fountains and cafés) with
images within our application ... and I have a
couple of questions. <br>
<div><br>
</div>
<div>How quickly do OSM node and ways numbers mutate
? What percentage should I expect to change each
year. If the percentage of ids mutates slowly
enough .. maybe this is still the best bad short
term option ? </div>
<div><br>
</div>
<div>I was pointed to this wiki : </div>
<div><a
href="https://wiki.openstreetmap.org/wiki/Permanent_ID"
target="_blank" moz-do-not-send="true">https://wiki.openstreetmap.org/wiki/Permanent_ID</a> </div>
<div><br>
</div>
<div>On the discussion page, it is mentioned that a
solution is being targeted for end 2020 . Will
there be a tool to translate actual osm node and
ways numbers to the new permalink ids. </div>
<div><br>
</div>
<div>Apparently Mangrove uses GEO URI to create
perma links towards objects. <a
href="https://en.wikipedia.org/wiki/Geo_URI_scheme"
target="_blank" moz-do-not-send="true">https://en.wikipedia.org/wiki/Geo_URI_scheme</a>.
How do they deal with node repositioning ? I
could create a link name with first 5 latitude num
followed by first 5 longitude num... but as soon
as someone moves the node I would get a broken
link... </div>
<div><br>
</div>
<div>Thanks for your help and advice</div>
<div><br>
</div>
<div>Best regards,</div>
<div><br>
</div>
<div>Stuart </div>
<div><br>
</div>
<div><br>
</div>
</div>
</div>
</div>
<br>
<fieldset></fieldset>
<pre>_______________________________________________
Tagging mailing list
<a href="mailto:Tagging@openstreetmap.org" target="_blank" moz-do-not-send="true">Tagging@openstreetmap.org</a>
<a href="https://lists.openstreetmap.org/listinfo/tagging" target="_blank" moz-do-not-send="true">https://lists.openstreetmap.org/listinfo/tagging</a>
</pre>
</blockquote>
</div>
_______________________________________________<br>
Tagging mailing list<br>
<a href="mailto:Tagging@openstreetmap.org" target="_blank"
moz-do-not-send="true">Tagging@openstreetmap.org</a><br>
<a href="https://lists.openstreetmap.org/listinfo/tagging"
rel="noreferrer" target="_blank" moz-do-not-send="true">https://lists.openstreetmap.org/listinfo/tagging</a><br>
</blockquote>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
Tagging mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Tagging@openstreetmap.org">Tagging@openstreetmap.org</a>
<a class="moz-txt-link-freetext" href="https://lists.openstreetmap.org/listinfo/tagging">https://lists.openstreetmap.org/listinfo/tagging</a>
</pre>
</blockquote>
</body>
</html>