* Steve Dobson <[email protected]> [2010-06-14 06:31 +0100]: > I don't see why different tile servers are required. One could have a > version of the tile for each symbol set. That is a disk size issue to > me, not a multiple server issue, and disk space these days is cheap.
The tiles take up a fair amount of space. The main rendering server (as far as I can tell) is yevaud, which regularly runs at about 90% capacity (http://munin.openstreetmap.org/openstreetmap/yevaud.openstreetmap-df.html) of its tiles partition, which is 600GB total if I understand http://wiki.openstreetmap.org/wiki/Servers/yevaud correctly. > I haven't looked at either Mapnik or Osmarendar but I can't believe that > it would be that difficult to modify they tile rendering code to go > though a look-up table. It is, after all, a very common computer technique. I've loked at Mapnik, and I can believe it would be difficult. Mapnik (essentially) takes a PostGIS database and a rendering config file and spits out PNGs with the rendered map. To do as you want would require one of two things: either multiple config files with different icons for each region and everything else duplicated, or rendering a base PNG and multiple overlay PNGs for each icon set (each layer would have its own config file, but at least rules wouldn't be duplicated among them). The former would require a lot more work to maintain the rules, so I doubt anyone would want to do it, while the latter would at least complicate the rendering process a lot. I suspect this is an area where if you want to work out a process, you can try to convince people to start using your new process, but I doubt anyone is going to want to do just at your request. -- ...computer contrarian of the first order... / http://aperiodic.net/phil/ PGP: 026A27F2 print: D200 5BDB FC4B B24A 9248 9F7A 4322 2D22 026A 27F2 --- -- <cdlu> ERP <- new protocol. Emergency Rescue Protocol is designed to race to the scene of packet collisions and save the packets. -- seen on #umbclinux ---- --- -- _______________________________________________ newbies mailing list [email protected] http://lists.openstreetmap.org/listinfo/newbies
