Do the conversion at 8 zoom levels higher than your tile (i.e. the tile which that pixel represents)
i.e. if someone clicks the top-left pixel of 1,1...@z1 then do tile2ll of 256,2...@z8. If they click the 3rd pixel across from that then do tile2ll of 256+3,2...@z8. (replace 8 by log2 of your tile width, if you're not using 256x256) On Thu, Oct 8, 2009 at 2:36 AM, Lynn W. Deffenbaugh (Mr) <[email protected]> wrote: > I understand the discussion on the following URL about the tile names > and the long2tilex, lat2tiley, tilex2long, and tiley2lat functions. > > http://wiki.openstreetmap.org/index.php/Slippy_map_tilenames > > However, at zoom levels less than 4 (or so), I get a worsening offset to > the north and south of the equator as I map objects onto the maps. _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
