it has been discussed in a similar form earlier. it's useless and creates more problems than it solves - islands have roads not connected to the rest, and yes sometimes we have bridges or ferry lines, but some are accessible by plane only or private boat lines only - garmin maps are tile based. and many routable lines are not connected within a tile but connected to the next tile. mkgmap can't know what to keep.
a map generated with such an option will be completely broken. The only chance would be to take a whole planet, create a routing graph and filter out by some heuristics to make sure islands are not pruned. On Nov 15, 2011, at 8:20 AM, Francisco Moraes wrote: > On 2:59 PM, Carlos Dávila wrote: >> El 14/11/11 15:04, Francisco Moraes escribió: >>> Hi, >>> >>> Is there an option to pass to mkgmap that would delete unconnected ways? >>> Those unconnected ways lead to routing errors and are useless in a >>> generated map. >> Wouldn't it be better to throw a warning rather than deleting them? >> This way they could be fixed in the osm data. Apart from that, they >> can be of interest in non routable maps. >> > I am not asking to do this by default, but to have an option where I can > delete routable ways that are disconnected. Those cause routing errors > if left in the map and it is not always easy to fix them. For example, > trails in a wooded forest. Is there another trail that leads to them or > not? Easy to fix if you know the area but not so easy if you are relying > on satellite photos. > > Just my 2 cents. > > Francisco > _______________________________________________ > 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
