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You have to consider that the tiles are not built from your database only. For low zoom levels, coastline shapefiles and Natural Earth shapefiles are used, and osm data is added from about zoom level 5 onwards. There is a special roads layers with simplified geometries for lower zoom levels as well. The rendering time is a balance of database query time ...


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I'm not sure how to do this in Android, but here's how to do it on the computer: I was able to use Maperitive to mark a bounding area, download OSM data for the area, generate tiles for it locally, and deploy the map on a local webpage using leaflet.js . I can browse this map without any internet connection. Download and run Maperitive. First, click "Map > ...


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When displaying the map data as vector graphic via mapsforge, have a closer look at GraphHopper when you need a routing engine on mobile systems like android. There is a demo apk file for android testing purposes, and instructions how to get routing map data from raw OSM data. I also remember some topics on Graphhoppers mailing list about android use ...



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