Hello group. I submitted this idea to the group 7-15-12 but never got any response. Here it is again (copied from what I just posted in talk-us):
I've been putting this one off for a while, because of the magnitude of the dataset. I am importing Baltimore city building footprint data one neighborhood at a time. Running an intersect of this layer against the neighborhood layer breaks it down into bite size chunks that are easier to work with. I've gotten the necessary permission from the city, and talked about it with local users at the editathon, as well as over email or in person. Here is the data: https://data.baltimorecity.gov/Geographic/Building-Footprint-Shape/deus-s85f Here is the workflow: Open data in GIS program Open neighborhood boundaries (same website) in same GIS program Intersect, select single neighborhood worth of buildings Save as individual shapefile Launch JOSM Bring in shapefile Download data (as new layer) Compare every existing feature to new ones (can take a while) Look for traced buildings that use non-ortho imagery (shifted) Copy any tags from existing building features to building in new dataset (preserving others work) Remove machine tags from new data Tag as building=yes Copy all multipolygons to .osm data layer Copy all polygons to .osm data layer Verify tagging Check for errors Fix duplicated node errors with JOSM Fix building inside building errors by removing extra nodes Final check by turning new data on/off and looking for overlaps Upload with special EP_Import account http://www.openstreetmap.org/user/ElliottPlack -- Elliott Plack http://about.me/elliottp
_______________________________________________ Imports mailing list Imports@openstreetmap.org http://lists.openstreetmap.org/listinfo/imports