Apollinaris, I don't know if you questions was directed to my, but to create a map which alows routing drom kopenhagen to rome, I have to take a full europe map. It is not possible to download demark, germany, austria and italy, because routing is not possilbe then. routing only works if I take europe and create a map out of this. I'm providing these maps fordownoad. In this case the user can download a denmark, ermany, austria and italy map and is able to route over map/country borders. Currently the user must always download the whole europe map.
Marco Apollinaris Schoell schrieb: > On 19 Sep 2009, at 4:29 , Johann Gail wrote: > > >>> So is it possible to configure the splitter do split the maps not >>> after >>> x-Number of nodes but at these coordinates? >>> >>> >> No, this is not what I have written. There is some missunderstanding. >> The recent splitter is not able to split at geographical boundaries. >> This is the task of osmosis. >> > > even osmosis can't do that. osmosis takes a polygon as input and > doesn't read boundaries from osm files > > > >> Maybe it is not too complicated to build this feature into splitter, >> but >> at the moment it doesn't. >> > > neither splitter or osmosis insert new points. but it is required to > have boundary nodes in mkgmap. splitter would need to calculate > crossing points with the boundary or a provided split polygon with all > ways and insert the boundary points. > > >>> Or is it posilbe to do a presplit, which creates a tile for each >>> country >>> and then in a second step splitting the country files? >>> >>> >> Yes, this way should work. But for the presplitting you can't use >> splitter. I don't use osmosis by myself, so I don't know internals of >> it. But I know, that geofabrik splits its regions with osmosis. >> > > you can do the presplit but routing can't work then across boundaries. > osmosis has different modes > - clip ways at the boundary -> no routing across tiles due to missing > nodes > - include the whole way -> long ways extend far beyond the boundary, > areas aoutside the boundary will be incomplete, tiles will overlap in > huge areas. routing may break in these overlap tiles > - don't clip the way but omit the points outside the box/polygon -> > combining 2 osm files should work. but then why did you split them? > > > > >>> Then it would be possilbe to download europe from geofabrik, split it >>> into countries and then crate maps from it. >>> These maps would be interroutable. It would be also need less >>> computing >>> power/memory for doing this compared of >>> processing the whole europe map >>> >> I would expect the interstate routing to work. Precondition is >> obviously >> that the presplitted tiles don't miss any segments at the border and >> the >> border nodes have exactly the same coordinates. >> >> > > still don't understand why this is useful. If you want multiple > countries and route across countries and tiles why split it more than > necessary and try to assemble again? > > >> Regards, >> Johann >> _______________________________________________ >> mkgmap-dev mailing list >> mkgmap-dev@lists.mkgmap.org.uk >> http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev >> > > _______________________________________________ > mkgmap-dev mailing list > mkgmap-dev@lists.mkgmap.org.uk > http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev > > _______________________________________________ mkgmap-dev mailing list mkgmap-dev@lists.mkgmap.org.uk http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
