just read this ? http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames
>I think that needs testing. > >Also, it should be pointed out that it is using an approximation for >calculating the tileX and tileY. > >Sent from my iPhone > >On Sep 22, 2013, at 10:18 AM, Peter Barth <osm-talk at won2.de> wrote: > >> Hi, >> >> Arnie Shore schrieb: >>> All, given a coordinates range and zoom range, is there an >available >>> algorithm that will calculate the count of OSM tiles involved? >> >> Without rounding and assuming negative values vor lat/lon in case of >> south/west coordinates and start and end being zoomlevels that are >> included in the count I think (didn't test it ;)) this should be >> correct: >> >> tilesX = 2^(start-1)*($w-$e)/360 >> tilesY = 2^(start-1)*($n-$s)/180 >> tilesX*tilesY * 4^(end-start) >> >> Regards, >> Peda >> >> p.s. you should start a new topic for new questions. However, you >> replied to another topic and just changed the subject. >> >> -- _______________________________________________ talk mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk
