Hi all,I already replied Pierre-Alain on the french list, but it maybe useful for others too. For an extract of cross-country trails at [1], I use a world planet file updated by osmosis as a file with daily diffs whenever I feel like too. Find the script attached. Then Osmfilter [2] do the filtering, as in my case Osmosis is not able to filter relations recursively enough.
Planet update is ~4 hours, filtering ~2hours on a 4Go ram machine.By the way, same result on a 7200rpm disk or SSD disk. I guess ram and compression are the bottlenecks.
Yves [1] www.pistes-nordiques.org [2] http://wiki.openstreetmap.org/wiki/Osmfilter On 24. 04. 11 20:59, Martijn van Exel wrote:
Hi Pierre,As far as XAPI servers go I have given up for now, although MapQuest is running a more reliable instance[1] that may be useful, although they employ Ian's Java implementation as well so the same bbox limitations likely apply.I am, in fact, working on a similar project in the Netherlands and for an up-to-date data feed for CCTV cameras I use the process described here[2]. I'd love to compare that to your approach, we can probably benefit from each other's work.Best Martijn [1] http://developer.mapquest.com/web/products/open/xapi[2] https://docs.google.com/document/pub?id=1paaYsOakgJEYP380R70s4SGYq8ME3ASl-mweVi1DlQ4On Sat, Apr 23, 2011 at 9:57 PM, Pierre-Alain Dorange <pdora...@mac.com <mailto:pdora...@mac.com>> wrote:Hi, i'm a french contributor and i look for advice for a project. I'm processing free french city official data (from insee, official stat agency) and i have to match those city with osm city (place=*) to geolocalize it on a map. The project is to present cctv surveillance in the country (see demo at [1]). To get those data and preprocess them i used XAPI to retrive all nodes with tag place=* : The result is fine but XAPI servers are randomly running and data seems old. New Java XAPI servers do not accept the bounding box : too large. What are the best way to retrieve OSM raw data (xml format would be preferable) to update regulary the project's data ? Thanks. [1] project demo http://www.leretourdelautruche.com/map/cctv/cctv_map.php These map show city global data (user contributions) and individual cctv camera localisation (from OSM man_made=surveillance) when you zoom to a city with cctv mapped (ie. Strasbourg) : <http://www.leretourdelautruche.com/map/cctv/cctv_map.php?zoom=15&lat=48 .5831&lon=7.75238&layers=B0T <http://www.leretourdelautruche.com/map/cctv/cctv_map.php?zoom=15&lat=48%0A.5831&lon=7.75238&layers=B0T>> -- Pierre-Alain Dorange OSM experiences : <http://www.leretourdelautruche.com/map/> _______________________________________________ dev mailing list dev@openstreetmap.org <mailto:dev@openstreetmap.org> http://lists.openstreetmap.org/listinfo/dev -- Martijn van Exel http://about.me/mvexel _______________________________________________ dev mailing list dev@openstreetmap.org http://lists.openstreetmap.org/listinfo/dev
planet_update.sh
Description: Bourne shell script
filter.sh
Description: Bourne shell script
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