[Tagging] [OSM-talk] Should we map things that do not exist?

[Mike Thompson]

On Thu, Dec 31, 2020 at 3:47 PM Graeme Fitzpatrick <graemefitz1 at gmail.com>
wrote:

>
>
>
> On Fri, 1 Jan 2021 at 07:10, Mike Thompson <miketho16 at gmail.com> wrote:
>
>> I have had a problem with other mappers adding things back into OSM that
>> still appear in some of the imagery available to OSM, but where newer
>> imagery (or recent survey) show that such things no longer exist.  I
>> initially tried mapping these with just the OSM geometry and a note=* tag,
>> but it seems that one of the QC tools considers these to be an error, and
>> someone was going around deleting these.  I have started adding a
>> "removed:*=*" tag, e.g. removed:building=yes along with a note=* tag
>> explaining.  Technically I am mapping things that no longer exist, but the
>> purpose is to make it less likely that other well intentioned mappers undo
>> my (and others) work and make the map less accurate.
>>
>
> When I've updated tagging to say removed / destroyed, I've added a
> description="Destroyed by bushfire Jan 2020. To be re-built"
> eg https://www.openstreetmap.org/node/444672467, so it can be read by
> mappers, hopefully preventing them from remapping it, & also map users, so
> they don't try & go there!
>
If you are talking about just description=* or note=* I think that it will
get flagged by one or more of the QC tools, and there seem to be some
mappers that mindlessly go through and try to get QC errors to "go away"
(back in the day when I messed with car maintenance we called this "putting
electrical tape over the oil light"... didn't go well).  If you are talking
about removed:*=* or destroyed:*=* plus description=* and/or note=*, I
think that works, but technically we are "mapping something that no longer
exists."

Mike
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