Yes, we provide the same option for coastlines. So it's possible although there is the size restriction. Boundaries take around 3% of the complete OSM data (3% as osm.gz compared to osm.pbf). So think about creating a europe map from the 4.5 GB dump. The boundary data file would be around 3%*4.5GB(osm.pbf) = 135MB(osm.gz). So in the end your computer additionally needs as much main memory as you need to compile a 135MB big tile. The calculation is quite rough but the result is clear: the memory requirements grow quite much compared to the overall size of your map. WanMil
Stupid question... Why don't extract the boundaries with osmosis to a single file. mkgmap could use this file to complete the boundaries while rendering the maps...
Martin
Am 17.03.2011 um 22:57 schrieb WanMil:
And another requirement is also hard to achieve: performance. The branch is not optimized very well yet. But I am sure that such searches for big areas from all items of a tile are quite expensive no matter how optimized they are.
WanMil _______________________________________________
I currently really don't want to use the locator branch, due to it's speed. I need already about 12 hours to compute all maps for weekly updates and osm data alone growing is already a concern. Wouldn't it be enough to use no guessing and just input correct addresses (best with working housenumber search)? The searching for streets not addresses is anyhow kinda strange and seems much more like a workaround than a clean solution.
Yes ... but how should mkgmap input the correct addresses? ;-) In an ideal world you are right. But OSM data is far (very far) away from complete address tagging.
Beware that all POIs would have to contain a complete set of addr-tags (addr:country, addr:county addr:region(?), addr:city, addr:street, addr:housenumber). The same with the is_in tags for all streets that do not have any POIs attached until now. I havn't tested it but it should not be too complicated to make a statistic with osmosis and a dump file.
Maybe the completeness of tagging will change within the next 2 years but we are implementing for now.
WanMil