Matthew, On 05.05.2013 09:10, Matthew Petroff wrote:
When run through the JOSM validator, there are no errors, but there are ~47k warning, mostly for "crossed buildings" and "building inside building," with a few "intersection between multipolygon ways," "self-intersecting ways," and "overlapping ways." From the cases I looked at, these are the result of slight overlap between adjacent row houses, and I don't think they are an issue.
Overlapping houses should certainly not be uploaded, no matter how slight the overlap.
I found that in many cases you have adjacent houses using their own nodes, rather than sharing nodes along the common wall (see http://www.remote.org/frederik/tmp/baltimore.png).
I would also recommend getting rid of the "source" tag on every single object; it is sufficient to place it on the changeset especially if it can be shown that the data is PD.
In general, proponents of large-scale uploads should also try to answer the question who will care for the data once it is uploaded. You are proposing to upload a quarter million houses; is the Baltimore community large and active enough to take on the responsibility that comes with such an upload - to at least delete houses that are knocked down or add major new developments?
Bye Frederik -- Frederik Ramm ## eMail [email protected] ## N49°00'09" E008°23'33" _______________________________________________ Talk-us mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-us
