Thanks Richard, I have scheduled the download of planet-091209.osm.bz2 for off-peak times (we down under have limits to the amount of traffic we may download).
Working out which diffs and how to apply them looks a bit daunting. I've installed Osmosis. Thanks for the pointers. Richard Weait wrote: > On Mon, Dec 14, 2009 at 8:17 PM, Tony Morris <[email protected]> wrote: > >> I am trying to work out what is required to have my own local planet >> file then take diff updates. >> >> Am I right in understanding that the planet is in a raw form as .osm >> data (a single XML file?) and that the diffs are patches that I can >> apply to this file? I see that it is possible to put the OSM data into >> PostgreSQL, but this seems to be for rendering e.g. Mapnik. Are there >> any other applications for this? i.e. fast querying of the data perhaps? >> >> I'm just looking for where to get started. I understand I'll need to >> get the initial Planet file from somewhere and it is too big to >> download (or is it? anyone in the SE Queensland area have it on a HDD >> that I could copy from?). >> >> Thanks for any pointers. >> > > Hi Tony, > > The current planet file is about 7.6GB and you can get it from > http://planet.openstreetmap.org/ > Planet files are date-coded, and produced weekly, like this one > http://planet.openstreetmap.org/planet-091209.osm.bz2 > > Planet is an xml file and is substantially larger when decompressed. > All those "<" and ">" you see. A little large to manage. > > Diff files are also xml files and are produced for daily, hourly and > minutely periods, thought there are "catches" to working with diffs. > You'll want to have a look at > http://wiki.openstreetmap.org/wiki/Minutely_Mapnik and understand the > issues around "slow" and "replicate" diffs. > > You'll probably use osmosis and osm2pgsql to help you manage your .osm files. > > http://wiki.openstreetmap.org/wiki/Osmosis > http://wiki.openstreetmap.org/wiki/Osm2pgsql > > And depending on your area of interest, you might decide to work with > an extract rather than a complete planet file. > > http://wiki.openstreetmap.org/wiki/Planet.osm#Extracts > > Best regards, > Richard > > _______________________________________________ > newbies mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/newbies > > -- Tony Morris http://tmorris.net/ _______________________________________________ newbies mailing list [email protected] http://lists.openstreetmap.org/listinfo/newbies
