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<div><br></div><div><br></div><div><br></div><div>May 19, 2020, 09:43 by europeanwaterproject@gmail.com:<br></div><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;"><div dir="ltr"><div>How quickly do OSM node and ways numbers mutate ? What percentage should I expect to change each year.<br></div></div></blockquote><div>No idea.<br></div><div><div><br></div></div><div>You can check this using<br></div><div><a href="https://wiki.openstreetmap.org/wiki/Overpass_API/Overpass_API_by_Example#OSM_data_at_a_certain_date" rel="noopener noreferrer" target="_blank">https://wiki.openstreetmap.org/wiki/Overpass_API/Overpass_API_by_Example#OSM_data_at_a_certain_date</a><br></div><div>(it is a query example displaying state of OSM database at a specific date)<br></div><div><div><br></div></div><div><a href="https://overpass-turbo.eu/s/U98" rel="noopener noreferrer" target="_blank">https://overpass-turbo.eu/s/U98</a> is displaying amenity=drinking_water<br></div><div>data at a specific date after it is run<br></div><div><div><br></div></div><div><div> If the percentage of ids mutates slowly enough .. maybe this is still the best bad short term option ? <br></div></div><blockquote class="tutanota_quote" style="border-left: 1px solid #93A3B8; padding-left: 10px; margin-left: 5px;"><div dir="ltr"><div><div><div>Apparently Mangrove uses GEO URI to create perma links towards objects. <a href="https://en.wikipedia.org/wiki/Geo_URI_scheme" rel="noopener noreferrer" target="_blank">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... <br></div></div></div></div></blockquote><div>You can try automatically detected moved nodes, and update your link. Still, would require some <br></div><div>manual checks.<br></div><div><br></div><div>In case of water fountains having some official number it can be added as ref.<br></div><div><br></div> </body>
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