[Imports] Dutch addresses and buildings import - how to deal with addresses in apartments

Gertjan Idema g.idema at zonnet.nl
Tue Feb 25 19:06:05 UTC 2014

I'm the developer of the plug-ins we use for the Dutch BAG import. These
plug-ins are still in development and currently only available to a
selected group of test users. With this group of 8 people, we are
testing and improving the plug-ins. On the 8th of march, we'll give a
workshop and introduce the plug-in to a larger group of interested
This is the main reason that the plug-in is not yet in the JOSM's
plug-in list. 

The reason that we remove the 3dshapes building outlines in most cases
instead of replacing the geometries, is that in most cases there is no 1
on 1 match between 3dshapes buildings and BAG buildings.
The 3dshapes 'buildings' are in most cases building blocks which will be
replaced by a group of bag buildings. For buildings that can be replaced
1 on 1 and that do have any history, we do use the replace geometry

Here is a link for the buildings WMS you can use in Josm:

I'm not aware of any WMS layer containing address data. This makes sense
as a WMS layer can only show one address at a certain point, hiding all
other addresses at the same point.
You can use the bagviewer to lookup individual addresses:

Gertjan Idema

> It's a bit inconvenient that plugins that are needed, don't show up in
> JOSM's plugin list. So I was stuck right away.
> That didn't stop me from reading on. What struck me as odd, is that
> the instructions say to remove the building outlines that came from
> 3dshapes. I know they're not worth all that much, but it seems to me
> the history ought to be preserved by using replace geometry on them.
> I finally created a Polyglot_Import account to help out with the
> Uganda borders. Now it seems I would have to create another
> Polyglot_BAG account, if I choose to take the many hurdles. I decided
> to let the goblet pass...
> (I know this requirement doesn't come from you, but you could make it
> easier for an occasional importer like myself by providing the
> necessary plugins in JOSM itself)
> I want to do a street here and there, not whole villages and city
> parts. The information I'm missing at the moment are the house
> numbers. In Flanders we have a WMS layer we can consult to add them
> manually. Is there something like that in the Netherlands?
> Cheers,
> Jo
> 2014-01-28 23:31 GMT+01:00 Johan C <osmned at gmail.com>:
>         Hi all
>         last November the Dutch addresses and buildings import has
>         been discussed on this list. Since then alpha testing has been
>         done in December by two people and after a new years meeting
>         seven members of the Dutch OpenStreetMap community are
>         currently beta testing a JOSM plugin which is performing the
>         preprocessing (conversion of the original BAG database into
>         the agreed tagging, simplifying building outlines and
>         eliminating about 99% of the crossing buildings errors) and
>         which is capable of loading data into JOSM by selecting a
>         polygon. Early March we hope to roll it out and get as much as
>         possible local knowledge in for importing, in order to
>         increase the number of active mappers in The Netherlands. 
>         Some days ago Paul checked a testimport and stumbled across
>         the JOSM validator warning 'Nodes at same position'. An
>         example can be seen
>         here: http://www.openstreetmap.org/?mlat=52.01284&mlon=4.33806#map=19/52.01284/4.33806
>         The Vermeertoren (named after the famous Dutch painter) is a
>         typical Dutch high rise building of 23 floors, combining an
>         underground parking garage, a health care center, a child care
>         center (kindergarten), social and luxury housing. That means a
>         lot of addresses in one building. The address data as
>         available in the official database (the BAG) combines several
>         different addresses into a single LAT/LON coordinate. The WIKI
>         on multiple addresses
>         http://wiki.openstreetmap.org/wiki/Addresses is not very clear
>         on this situation:
>         Buildings with multiple house numbers
>         Ambox warning pn.svg There is currently no consensus on this. 
>         This matter has not been addressed in the November proposal,
>         since I was not aware of it at the time. But given the WIKI we
>         later decided that our import method would be okay. Biggest
>         problems are that JOSM displays a warning (Nodes at same
>         position) and that the display of addresses on Mapnik is not
>         very nice. Perhaps the proposal as being made on this
>         page http://wiki.openstreetmap.org/wiki/Proposed_Features/Multiple_addresses would give a better solution. Then again, the Dutch community does not feel that the chosen solution is wrong. These addresses can be found in Nominatim and anyone using a Geofabrik extract will have correct addresses for any purpose (like routing).
>         Please share your thoughts on this. If you don't agree with
>         the Dutch community, then please also share the problem you
>         have with the chosen solution.
>         Cheers, Johan
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