Hi, roadsAreJoined() tests all points of one MapLine against all points of another MapLine instance. It should first check the previously calculated bounding boxes to eliminate many unsuccesfull loops. Gerd Index: src/uk/me/parabola/mkgmap/main/MapMaker.java =================================================================== --- src/uk/me/parabola/mkgmap/main/MapMaker.java (revision 2232) +++ src/uk/me/parabola/mkgmap/main/MapMaker.java (working copy) @@ -196,6 +196,8 @@ private boolean roadsAreJoined(MapLine r1, MapLine r2) { if(r1 != r2) { + if (r1.getBounds().intersects(r2.getBounds()) == false) + return false; for(Coord c1 : r1.getPoints()) { for(Coord c2 : r2.getPoints()) { if(c1 == c2 || c1.equals(c2)) -- View this message in context: http://gis.19327.n5.nabble.com/Patch-Improve-MapMaker-roadsAreJoined-tp55331... Sent from the Mkgmap Development mailing list archive at Nabble.com.