(This is BCC to [email protected], conversation to happen on [email protected].)
At the NYC building and address import we're facing the following question: **In cases where there is one address point per building, should we merge the address information onto the building polygon and toss the address point?** Originally the answer was: yes. Now there's reason to revisit this decision: the data steward (Colin Reilly from NYC GIS) told me that NYC GIS took great care to place addresses at about where the entrance of the building sits. This makes me think that there's value in not tossing the address location information but keep it in all cases, even if there is only one address per building. Here is a comparison of the two options. I'd like to discuss and decide at tonight's imports hangout. ## Option 1: Merge addresses into buildings where possible In cases where there is one address point within a building polygon, we take address attributes, assign it to the building polygon and toss the address point. Pros: a) This is how a lot of buildings are done in OSM b) Not regarding standing practice, merging addresses into buildings is an exception from the generally applicable method of doing separate address points. Cons: a) we lose data b) makes it harder for NYC GIS to leverage OSM ## Option 2: Always keep address points separate In this case we never merge addresses to building polygons, instead always keep them as separate entities. Pros: a) this is the NYC GIS way, making it nicer for GIS folks to use OSM b) this is the generally applicable method. No matter whether we have one or multiple addresses you can expect to find a separate node carrying address information. c) retains useful information Cons: a) Diverges (but does not violate [1]) common OSM practice Note: it has been suggested to use the address location information to tag an entrance. Unfortunately the data is not consistent enough to do this. ## Recommendation I'd really like to hear people's inputs here. Right now I'm leaning towards Option 2 as it - retains valuable information - does not violate OSM practice ## Status quo Note right now we've imported data in both formats :p I'm not worried about this and I'll commit to make sure in the end we're consistent. Right now the import is paused because of this open question. Ref: https://github.com/osmlab/nycbuildings/issues/15 [1] http://wiki.openstreetmap.org/wiki/Addresses#How_to_map_addresses
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