[mkgmap-dev] [locator] Diff for precompiled boundary tiles

Sun May 15 17:16:25 BST 2011

I have committed a program that compiles a diff for the coverage of 
boundaries in the boundary tiles.

Start it with:
java -cp mkgmap.jar 
uk.me.parabola.mkgmap.reader.osm.boundary.BoundaryDiff <boundsdir1> 
<boundsdir2>

The diff is created as a set of gpx files that shows removed areas 
(contained in boundsdir1 but not boundsdir2) and new areas (contained in 
boundsdir2 but not boundsdir1).

You can also limit the check to special tag=value combinations:
java -cp mkgmap.jar 
uk.me.parabola.mkgmap.reader.osm.boundary.BoundaryDiff <boundsdir1> 
<boundsdir2> admin_level=2 admin_level=6

I know that this is a bit off topic for mkgmap but it is an easy 
spin-off product and I think it might explain questions like: "my street 
is not assigned a city using the new boundaries download. why?".

WanMil