[OSM-talk] stop deleting abandoned railroads

Ruben Maes ruben at janmaes.com
Thu Aug 13 13:24:28 UTC 2015

On Thursday 13 August 2015 15:10:14 Mateusz Konieczny wrote:
> On Thu, 13 Aug 2015 21:54:39 +1000
> Warin <61sundowner at gmail.com> wrote:
> > For example a demolished building .. may have a new building built on 
> > the same spot .. with the same outline.
> > Leave the node data in OSM, change the tag building=yes to 
> > building=demolished (may not be rendered nor official OSM tagging)
> > add a note as to who/why ..
> > and then if rebuilt change the tag back to building=yes... with a
> > source tag please.
> > If the site has a different shaped building then the nodes will have
> > to be changed, or the site gets used for something else .. then
> > change it. But untill then leave the old data there.
> This is a bad idea. Maybe [note=this building is demolished] to protect
> against mapping from outdated aerial images may be OK.
> But expecting data consumers displaying buildings to filter out
> building=demolished, building=razed, building=proposed etc etc is a
> really bad idea.

Or you use demolished:building=yes as I said an hour ago.

This is clearer than a note IMO,
allows to retain all tags of the demolished building for reference and
caters for potential data consumers interested in demolished buildings.


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