Le 14.03.23 à 13:45, Pierre Béland via talk a écrit :
I imported the osm metadata using overpass

can youu share it to avoid having to make it again :)

Simple Building duplicates from the same contributor are the easy ones to 
correct.

yes, on the condition that you can easily detect when the contributor wanted to represent a simple building ? I imagine that a first criterion could be the absence of the level layer tag (which we see badly used in one of your examples) and perhaps building:level

osm type        nb of        quaddup    objects
way             1               838      3352

maybe best to focus on that first

See https://www.openstreetmap.org/relation/13965412 that contains way/677238859 
with inner role to 6 relations that represent each level of the building.

commented https://www.openstreetmap.org/changeset/118924402

one building is represented with one way (6 nodes) and 3 relations in which 
this way has role=outer.
   way 1137657546               building=cabin
   Relation : 15538065          building=yes
     Relation : 15538064                building=yes
     Relation : Horsnæs Fangststation (15538063) place=locality

ccommented https://www.openstreetmap.org/changeset/133075628

These are four different relations.
-10326414       -10326413       -10326412       -10326411
They all share these  2 buildings  as outer members.
48002128        505561207

what's strange is to have managed to do this with iD
but that's three mistakes :
- duplicate
- the garage is not a house
- the address in Switzerland represents an entrance door and by extention the building if this one has only one address. if the no. 7 represents the house, the garage does have the no. 7 (but probably the number 7.1 which is rarely tagged in osm)

Regards,
Marc



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