[Tagging] Tagging Digest, Vol 113, Issue 73

[St Niklaas]

Hi Stephan & all,

I realised this see the lines below,

Sergio Manzi <smz at smz.it>
Za 16-2-2019 16:06

Hello!


Actually the analysis was not mine, but just the result of a query in taginfo (https://taginfo.openstreetmap.org/keys/?key=building%3Astart_date), but I guess I understand what's going on here:


all of the objects you're referring are tagged with a start_date=* key, while the tag I was referring to (and was discussed in the mailing list) is building:start_date=* (note the presence of the "building:" namespace prefix...).


A query for "your" key (https://taginfo.openstreetmap.org/keys/?key=start_date) returns 14246906 objects!!


I don't know how many of those more than 14 millions objects are buildings, but I suspect quite a good number (an appropriate query in overpass turbo can clarify that, I guess).


Normally I'm all in for supporting namespaces, but I understand that we have a problem here and it would be just silly to throw away such a bunch of good information.


I suggest you to answer to the mailing list too and underline this situation. You can quote my answer in full or in part, if you wish.


Regards and my compliments for your outstanding contribution,


Sergio




On 2019-02-16 15:42, St Niklaas wrote:

Hi Sergio,


I doubt your analyses, since almost all buildings (5 million) in the Netherlands that have been imported since 2014, carry  "start_date = 2022" or alike. Have a look here https://www.openstreetmap.org/#map=19/52.53890/4.83687

The import comes straight out of the Dutch Cadastre after a lot of hard work getting the go ahead from the government. But my contributions are not among them, the BAG (Basis Addresses and Buildings) don’t measure covered buildings even if they are historic monuments, so that’s my speciality and they import my OSM work into the BAG 🙂


Greetz


[https://www.openstreetmap.org/assets/osm_logo_256-cde84d7490f0863c7a0b0d0a420834ebd467c1214318167d0f9a39f25a44d6bd.png]<https://www.openstreetmap.org/#map=19/52.53890/4.83687>

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