Hello, I made progress on "How to clean up the map cache" and wrote a perl script to do that.
This http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames gave me the needed information. Taking Osmarender tiles as example, this is how tile are stored on the server: http://tah.openstreetmap.org/Tiles/tile/$z/$x/$y.png and this is how viking stores the same tile on disk: $v = 17 - $z $ENV{HOME}/.viking-maps/t12s${v}z0/$x/$y\n" Explained in detail: - t12 stands for Osmarender tiles, as far as i know these types are also defined: "OpenStreetMap (Osmarender)" => 12, "OpenStreetMap (Mapnik)" => 13, "OpenStreetMap (Maplint)" => 14, "OpenStreetMap (Cycle)" => 17, - s$v e.g s13 stands for the zoom level, viking somehow reverses it like this $v = 17 - $z unfortunately therefore it's not possible to have zoom levels greater than 17 in viking. - tile $x $y is then stored in $x/$y - z0 is not z for zoom level, it's just always z0 The attached perl script lists all map tiles that are not in the specified areas. I get the area definitions by browsing http://www.openstreetmap.org and then select the "Export" Tab, then I take the North South West East values from the "Area to Export" field e.g. http://www.openstreetmap.org/export/?lat=49.452&lon=10.959&zoom=10&layers=B000FTFT see @areas array of array in attached perl script: # bounding box of areas to keep map tiles # Format is: North South West East my @areas = ( [qw/52.0279 51.8842 7.4984 7.7498/], # some area in germany [qw/57.675 57.173 13.354 14.36/], # some area in sweden ); list_unwanted_viking.pl just gives a list of path names of tiles that exist in the filesystem but are not in the areas defined in the @areas array. You can make use of the list like this to clean up your ~/.viking-maps map cache: perl list_unwanted_viking.pl | tar --remove-files -cvf bakup_$(date +%s).tar -T - This will remove the unwanted tiles from /.viking-maps but also create a backup tar file. As far as I can see there is no risk but be aware: Use at your own risk. Cheers Lixus Am Thu, 28 Feb 2008 19:03:31 +0100 schrieb Lixus Zoran <g...@muellers.ms> : > > 3/ Is it possible to remove map tiles from the cache? Something like the > > "download maps" tool but "reversed" ("remove maps"). Or export an area > > to another map cache? > > I asked this question as well, didn't find a solution yet but got the > below reply. Perhaps someone could write a script to clean up ~/.viking-maps
list_unwanted_viking.pl
Description: Perl program
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