Re: [Flightgear-scenery] Bolivia OSM Shapefiles

[Eugenio M. <e.m...@gm...>]

On Wed, Mar 14, 2012 at 03:20:40PM +0100, HB-GRAL wrote:
> Hi all
Hi Yves and everyone.
> 
> As you can read in the log of the IRC meeting 2012-03-11 we are trying 
> to evaluate an isolated region to see what comes up with OSM data. 
> Bolivia was chosen by accident for the moment.
> 
> I’m not aware how the current OSM data on the scenery mapserver has been 
> imported, so I did a new import/export with recent data, distributed by 
> geofabrik.de. It is raw data as it is, but the shapefiles are splitted 
> by queries into
> 
> LINE:
> - Canal, River, Stream
> - Motorway, Primary, Secondary, Tertiary, Trunk, Road, Track, Residential
> - Taxiway, Runway
> - Railway
> 
> POLYGON:
> - Industrial
> - Residential
> - Lake, Wetland
> 
> This data is only for evaluation purposes and scenery created with this 
> data can’t be distributed under GPL license.
> 
> Proposal for this evaluation:
> 
> - What OSM features are available ? What makes sense for scenery 
> creation ? (The data holds a pre-selected set of features, better or 
> more ideas?)
> 
> - Should OSM data be evaluated for every region/country/source ?

According to openstreetmap wiki [0] Bolivia has a different
conventions than my country Argentina [1] which is a neighbouring
country. Here in Argentina you have mostly avenues and roads
distinction because of speed limit, in avenues it is 60 km/h and in
roads is 40 km/h. So you have avenues drawn with tag highway=primary
and roads with tag highway=residential and then you have to add the
surface tag, so in my town in the same avenue you have all with
highway=primary and then in 10 blocks it changes from surface=paved
then surface=cobblestone and then sirface=unpaved. That does not show
up in mapnik tiles but should be in your data if you took it from
Argentina.
 
> - Comparing to recent flightgear world scenery (vmap0?) shapes, do we 
> get better roads here ?
> (There are some cases i.e. Australia where vmap0_roads are probably 
> better than OSM, but this was only evaluated on the flightgear 
> mapserver, without further knowledge what OSM data has been imported there)
> 
> - What is missing for consistent scenery creation with this sample data 
> ? I.e. roads/rivers width ? Others ?
> 
> - What steps are needed to get topologically clean data for FlightGear 
> scenery creation tools, terragear-cs ?
> 
> Feel free to download this data here (~10 MB):
> http://download.fgx.ch/data/bolivia-osm-2012-03-12.zip

As soon as I can I'll check if there are more things which could be
used that doesn't show up in mapnik.

> I recommend Quantum GIS (QGis) or equal for browsing this data and 
> comparing to other sources (http://www.qgis.org).
> 
> Evaluating this "model" data and participation in this scenery 
> discussion is welcome anytime.
> 
> Cheers, Yves
Thanks. Eugenio.