[Talk-it-southtyrol] Import numeri civici in OSM dal DB della Provincia di Bolzano

[Martin Raifer]

> For the Ladin's towns the first problem is that the data that comes from  
> the PA does not have the ladin names.

Interesting. But I know that the Gemeindenverband has address data also  
with Ladin street and place names.

> So i want to append at first the ladin names following this rules:

For what I know, the street names in Ladin towns are only in Ladin. See  
here: http://goo.gl/NuzTe9
That's also the way it is currently mapped in OSM:  
http://osm.org/go/0IQl8TPN
Names of towns are typically multilingual, I guess.

Therefore, we should probably only use addr:street:lld for addr:street.

>> * addr:country
>> Can be omitted, but doesn't harm to include either.
> A first analysis shows that there are a lot of data with tag  
> incorrectly, for example addr: country = DE . I think it's good to  
> correct this data

I do only count 4 nodes with addr:country=DE  
(http://overpass-turbo.eu/s/1qV), but this could be fixed very easily  
outside of this import.

>> If the house-number is already in OSM, I would keep the original  
>> geometry for good practice. […]
> A first analysis of Martell shows that there are a lot of problems [1]:
> [1] http://freegis.r3-gis.com/download/aa2osm/3_martell_1.jpg
> Two house number 219: one tagged on a building, one on a POI

That's not an error from an OSM point-of-view. Both objects have this  
address.

> The house number 220 does not exist anymore, there are 220/A, 220/B
> Like above for hn 65 -> 65/A, 65/B, 65/C, 65/D

Here, OSM is wrong, and the address information should be replaced by new  
data.

> My opinion is:
> If the house number is a point, we keep the geometry of OSM
> If the house number is related to a building, it's better to delete this  
> information from the building and insert a new point

But if you replace addresses on buildings with nodes, one can't easily  
tell which building has which address. Take a look at your example and  
search for 216/B. Which building is it? With the current OSM-tagging it is  
perfectly clear, with address nodes, one would have to do some pretty  
fancy address-matching.

Another question: What does the address node from your data actually  
represent? Is it the building's entrance? If yes: how accurate are the  
coordinates? If it would be precise enough, we could in principle import  
those as "entrance"[2] nodes if they are near to a building (with address  
information if no address already exists, otherwise without).

Martin

[2] https://wiki.openstreetmap.org/wiki/Key%3Aentrance
     http://taginfo.openstreetmap.org/keys/entrance#overview