[Tagging] Use of old_name (was Re: Mapping deforestation)

Marc Gemis marc.gemis at gmail.com
Tue Mar 12 12:15:58 UTC 2019

What if some friends say we'll meet next year again in front of the Whizzo.
In the meantime, the Whizzo closes and is replaced with a restaurant Eatwell.
If they can then search for the old name it's useful, because they
might not be overly familiar with the area and don't know the place
has changed.
They will also see the new name and the new function within the tags.
So they now know they have to meet in front of a restaurant now.

BTW, this is of course if you use Nominatim. OsmAnd, Magic Earth etc,
do not search on old_name AFAIK.

So for me, the old_name seems useful, even though the representation
by some renderers (Nominatim in this case) might not be perfect.


On Tue, Mar 12, 2019 at 12:36 PM Paul Allen <pla16021 at gmail.com> wrote:
> On Tue, 12 Mar 2019 at 00:51, marc marc <marc_marc_irc at hotmail.com> wrote:
>> When one shop is replaced by another, I always keep the old name with
>> old_name even if no one else uses it to designate the new store. the
>> primary purpose is to prevent someone from re-encoding the old store
>> with an older source than mine.
> I do that with a note because Nominatim will return answers for old_name as well as name.
> So if the supermaket chain Whizzo (fictional name) has closed down its store in one town,
> using old_name=Whizzo will lead people from out of area searching for their nearest Whizzo
> to think it's still there but has rebranded (it's still Whizzo but with a new name).  That's why
> note=* exists, to let other mappers know why a thing is mapped a certain way when reasons
> exist to assume it ought not be.
> There are cases where I'd use old_name: where the name has changed but not the function.
> Houses of significance (such as listed buildings, mansions, etc.) which have changed name
> but references may be found in older books (and even on-line) to the old name.  You may not
> know that Castell Malgwyn Hotel became Hammet House after you find a reference to
> Castell Malgwyn somewhere (still a hotel: it may revert to theold name soon, and if it does
> I'll swap name and old_name).  Pubs sometimes change name with a change of landlord,
> and again references to the old name abound.
> Where I'd definitely not use old name is where (for example) a general store closed down
> and a restaurant re-opened in its place: Siop y Cardi (general store) in Cardigan is now Crwst
> (restaurant).  Using old_name for that would be highly misleading and benefit nobody.  If I
> thought another mapper might come along and rename back to Siop y Cardi then I would have
> added a note saying that was the building's previous incarnation, not used old_name.
> --
> Paul
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