I'm looking into building a density map to help improve the splitting (whether the splitting be automated or done via a GUI tool), and I'm trying to get a feel for what the memory and disk overhead will be using this approach. In particular, I'm interested in finding out what the highest number is that people are using for the --resolution parameter in the splitter. Is anyone using a value of 20 or higher? If so, what is the bounding box of the osm file that you are splitting? eg Europe's bounding box is (34.43055,-31.78259) - (82.35188,69.41235) while the whole planet file's bounding box is (-90,-180) - (90,180). If you're unable to view the start of the osm file due to its size or because it's compressed or whatever, just let me know which osm file it is and I'll figure it out from there. Many thanks, Chris