> By "pregenerate" I suppose you mean pre-download from the osm servers? > This in the general case is prohibited by osm's TOS : > http://wiki.openstreetmap.org/wiki/Tile_usage_policy
Yes, I am referring to the possibility to do the "seeding" of the tiles, for example, referring to MapProxy, look at the mapproxy-seed command [1]. Looking at the link you sent, the sentence "Bulk downloading is strongly discouraged. Do not download tiles unnecessarily." seems to prohibit this use case, so you are definitely right. Thought, this would be seem prohibited just for zoom levels >= 17: "In particular, downloading significant areas of tiles at zoom levels 17 and higher for offline or later usage is forbidden without prior consultation with a System Administrator. These tiles are generally not available (cached) on the server in advance, and have to be rendered specifically for those requests, putting an unjustified burden on the available resources. To avoid having your access blocked, please discuss your requirement with system administrators either via their wiki pages or on the IRC channel prior to starting." In any case, as supposed in my previous email, it is not feasible to seed the whole OSM on common cases normal sized hardware (unless you want just to display maps to low zoom levels): on the OSM own servers they are not caching it for zoom levels >= 17 and I guess they have a very large infrastructure. But, could still be a viable approach for smaller datasets coming from existing WMS that do not prohibit this kind of use. thanks for pointing this out ;) P [1] http://mapproxy.org/docs/1.3.0/seed.html -- Paolo Corti Geospatial software developer web: http://www.paolocorti.net twitter: @capooti skype: capooti _______________________________________________ mapserver-users mailing list mapserver-users@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/mapserver-users
