[Live-demo] Updating osm_dataset_overview

Javi Sanchez jsgisdev at gmail.com
Mon Jan 28 15:32:03 PST 2013


Thank you Hamish for the information!.

Now I've completed osm_dataset_overview and status is 6.5final in status 
sheet.

Regards,

Javi Sánchez.


El 28/01/13 00:45, Hamish escribió:
> 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




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