Yesterday at SOTMUS here in SF, Dane Springmeyer (Maobox) demonstrated something they call "overzooming" that might be worth investigating. It seems to solve the kind of problem Thomas is articulating.
-- Puneet Kishor Policy Coordinator for Science and Data Creative Commons On Jun 9, 2013, at 9:14 AM, thomas bonfort <[email protected]> wrote: > Jukka, > No this is not considered, and you'll have to be really persuasive to make > this happen as I do not see any advantage of adding this :) The reason is > that in order to create e.g. the tile for level 0 for the first time, you'll > have to downsample (and maybe previously seed) the full z=21 level (and all > the intermediate ones). > > regards, > thomas > > > On 9 June 2013 18:02, Rahkonen Jukka <[email protected]> wrote: >> Hi, >> >> Have you been considering to seed the cache for aerial or satellite image >> layers in opposite order compered to the normal Z0, Z1, Z2... so that only >> the best resolution Z(max) tiles (or perhaps also Z(max-1) were requested >> from the WMS? The lower resolution tiles could me created by combining and >> resamplint tiles from the tiles of the higher zoom level in groups of 4. >> This should be much faster than asking lower level images from the WMS, >> especially if the WMS is a remote one and connection is slow. If resampling >> from Z+1 tiles yields to artifacts I feel that quality by resampling from >> Z+2 would normally be good and speed migh be still fantastic. >> >> -Jukka Rahkonen- >> >> _______________________________________________ >> mapserver-users mailing list >> [email protected] >> http://lists.osgeo.org/mailman/listinfo/mapserver-users > > _______________________________________________ > mapserver-users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/mapserver-users
_______________________________________________ mapserver-users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/mapserver-users
