Sebastian Spaeth <[email protected]> writes: > Steffen Hoffmann wrote: >>> Sebastian Spaeth <[email protected]> writes: >> >>>>> Stephan Knauss wrote: >>>>>>> Sebastian Spaeth wrote: >>>>>>>>>>> What else could we render? Nautical charts maybe? What else? >>>>>>>>> Language overlays in 100 languages :-) >> [...] >>>>>>> Is it possible to overlay a captionless base-layer with captions? >>>>> Dynamically in openlayers yes. We would need to create the captionless >>>>> layer for all zoom levels (or better remove all text from the default >>>>> tiles, rather than have a new full-zoom layer). >>>>> >>>>>>> The top 20 languages (by the number of name-tags) cover already a huge >>>>>>> part of the planet. >>>>> Yep >>>>> >>>>> Any takers welcome. I would need to set up the caption layers on the >>>>> server (easy) and someone (not me) would need to create style sheets for >>>>> osmarender and introduce those caption layers in the clients. >>> The server then should be setup to deliver a default caption tile if a >>> tile for the requested language is not available. >> >>> The downside of a setup like this is that the tile layer would not be >>> usable anymore without a caption overlay. That makes its use more >>> complicated for sites like the OSM homepage. This would need to offer >>> all the caption overlays which are incompatible with the other base >>> layers that one can choose there. >> >>> Don't know whether OpenLayers has a smart way of dealing with that. >> >> I don't know, if it is possible to merge a tile with the corresponding >> caption layer tile on request. I read somewhere "If one can think it, it >> can be done." or similar. I think about it ... :-) > > Ohh, that is certainly possible. However t...@h serves currently about 4 TB > of data per months. And there is no way I get that server to produce the > majority of those tiles on the fly. There is also no way to have enough > storage to cache those merged layers for 20 languages or so. > > So it would be a client side-merge (aka openlayers or whatever).
Or, someone needs to setup a proxy server that provides merged tiles. Matthias _______________________________________________ Tilesathome mailing list [email protected] http://lists.openstreetmap.org/listinfo/tilesathome
