Hi, A while back I created a python script to split a NRN GML file into smaller parts. This was done to speed up the conversion of geobase2osm. The updated version can be here, and it is very alpha: http://www.steggink.org/temp/nrn_splitter_02.py.txt
1st parameter (mandatory, no error handling): GML file to split up 2nd parameter: level Level = 1 (default): file gets split up in 1:50000 NTS tiles (2 deg x 1 deg, 999X99) Level = 2: file gets split up in 1:250000 NTS tiles (8 deg x 4 deg, 999X) This app only works below 68 deg latitude, because the tiling is different up north. This is not a big issue, because the few roads there are already in OSM (right?). So far I haven't seen any serious issues with it, but better handle with care. I hope it fits your purpose. Regards, Frank Emilie Laffray wrote: > Hum, > ok, where can I find the gml files? What size do you want your slice > to be? > The solution would be to use ogr2ogr first to transform into a > shapefile. The next step is to transform the shapefile into an osm > file. Finally, you would be using Osmosis to cut using bounding box. > No need for Postgis in this case. Postgis would be needed if you > wanted to have something more complicated. In this case, command line > tools are available. I could probably create a small python script > doing this in a few hours. > Potential problem here is that shapefile contains only one layer of > the same type by default. Any GML files with different kind of > geometries like Linestring or polygone would need to be put into > separate shapefiles. > > Emilie Laffray > > 2009/10/1 Sam Vekemans <[email protected] > <mailto:[email protected]>> > > Nothing, actually. :) > > Just for a volunteer to take each whole province gml file and slice it > in a couple chunks, and make the .osm files available, (on a server > somewhere) > so then newbies like me, can run with it and just copy in the roads > that we need. (doing so in a tileBYtile area, claiming our working > area) > i have the rectangle areas available as .osm files and .shp files (its > included in the canvec-to-osm converted zip file for each area). > > > .... But we are all volunteers, so there is no rush, and its just a > request i keep bugging the smart PostGIS people about :) > > Probably for round 2 (next year) a GUI might be helpful, but the > concept is the same, files on a website directory works just fine. imo > > Sam > > p.s, any special requests for a tile area to be converted from canvec? > Otherwise, i'll go with 082 area. > > On 10/1/09, Emilie Laffray <[email protected] > <mailto:[email protected]>> wrote: > > 2009/9/27 Sam Vekemans <[email protected] > <mailto:[email protected]>> > > > >> Thanks, > >> Slowely but surely it's getting easier. Awesome :) > >> I'm a newbie at this, but im sure there is a VisualBasic programmer > >> out there who can make a handy GUI with a bare-bones program. > If thats > >> technically possable? I dont know. ... if there's a way to avoid > >> installing other programs. .. maybe not. :-) > >> > > > > Yuck Visual basic really stinks :) > > What is needed actually? > > > > Emilie Laffray > > > > > -- > Twitter: @Acrosscanada > Facebook: http://www.facebook.com/sam.vekemans > > _______________________________________________ Talk-ca mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-ca
