Javi wrote: > I've been trying to update osm_dataset_overview. I have > noticed that feature_city data and PostGIS Databases must be > included. I've already done it, but without description[1]. > I wonder if any of you can help to add short descriptions to > them, just is case, this is already done in any other > document.
Hi, I was responsible for creating all of those extracts, let me know if you get stuck. > On the other hand, I wonder if there may be other cases of > OSM data included in any other kind of databases, like > spatiallite, Rasdaman.... hopefully not, and we're all working from the same base dataset. > [1] > - Nottingham.osm.bz2: > A large extract of the greater city area as a BZip2 > compressed XML text file. > > - Nottingham_CBD.osm.bz2: > A smaller subset covering just the central business > district. Right, the smaller CBD version was created for pgRouting to keep performance high. Nottingham was chosen as it will be the host of FOSS4G 2013 in September. Minneapolis (home of FOSS4g-NA 2013) is a much bigger city & so much bigger dataset, but for this release I'm thinking to maybe have the "View OSM online" menu entry point to MN instead of Nottingham. (thoughts?) I'd note that I haven't run a new Xapi/Overpass extract for the data since Aug. 2012, but at this late stage in the release cycle I'm a bit hesitant to touch it. (see http://download.osgeo.org/livedvd/data/osm/Nottingham/) > - feature_city.osm.bz2 > - feature_city_CBD.osm.bz2 These are simply stable symlinks to the host city files. All quickstarts and overviews should use these file/path names so that they don't go stale and need to be updated every release. > - feature_city_poi.db this is a sqlite DB of "positions of interest" nodes extracted from the above feature_city.osm.bz2. Contains pubs, fuel stations, restaurants, etc. Technically the osm2poidb program which creates it comes from OSM's code svn, but is currently built as part of the GpsDrive package (which is a bit of an OSM hybrid project with source code partially over at OSM's svn). > OSM data imported into PostGIS Databases: > - osm_local > - osm_local_smerc imported with osm2pgsql, they are the full feature_city.osm datasets, one imported to lat/lon (epgs:4326), the other into the infamous "Google spherical mercator" pseudo-projection for generating Mapnik webtiles. Perhaps with some osm.xml magic Mapnik could be trained to just use the osm_local db, but I haven't tested that. hope it helps, Hamish _______________________________________________ Live-demo mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/live-demo http://live.osgeo.org http://wiki.osgeo.org/wiki/Live_GIS_Disc
