[OSM-dev] Size of tiles

Peter Wendorff wendorff at uni-paderborn.de
Tue Jul 2 06:41:54 UTC 2013


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 <screams_3 at hotmail.com> 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.
>>
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>> dev at openstreetmap.org
>> http://lists.openstreetmap.org/listinfo/dev
>>
>>
> 
> 
> 
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