Hi, EPSG:3857 is only valid between 85°S and 85°N so poles are never rendered.
http://www.epsg-registry.org/report.htm?type=selection&entity=urn:ogc:def:crs:EPSG::3857&reportDetail=short&style=urn:uuid:report-style:default-with-code&style_name=OGP%20Default%20With%20Code&title=EPSG:3857 -Jukka Rahkonen- Peter Wendorff wrote: > Am 01.07.2013 23:23, schrieb Eric Fischer: >> At the equator, the length of a tile is the circumference of the earth >> (40,075 km) divided by 2^zoom, so a zoom level 19 tile is 76.4 meters on >> a >> side, for 5837m^2. > ...but at the north pole (where we usually don't render), the north edge > of a tile represents 0 (the circumference of a point) divided by 2^zoom > = 0, so there's no general answer to your question. > > regards > Peter >> >> Eric >> >> On Mon, Jul 1, 2013 at 2:16 PM, Vince Berubey <[email protected]> >> wrote: >> >>> Hi, >>> using Mapnik and the python scripts, I generated tiles from zoom level >>> 0 >>> to 20. I was curious to find what is the exact size covered by a tile >>> for >>> every zoom level. >>> >>> .i.e: Zoom19= 20m^2 >>> >>> Best regards. >>> >>> _______________________________________________ >>> dev mailing list >>> [email protected] >>> http://lists.openstreetmap.org/listinfo/dev >>> >>> >> >> >> >> _______________________________________________ >> dev mailing list >> [email protected] >> http://lists.openstreetmap.org/listinfo/dev >> > > > _______________________________________________ > dev mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/dev > _______________________________________________ dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/dev
