[OSM-dev] Earth radius

Komяpa me at komzpa.net
Sat Jun 18 05:38:13 UTC 2016


OSM uses EPSG:4326 for storing coordinates and EPSG:3857 for rendering.

You can get projection definitions on http://epsg.io/4326 and
http://epsg.io/3857 respectively, or find it bundled with proj4 library
that is widely used to deal with projection nuances.

сб, 18 июн. 2016 г. в 1:37, Stadin, Benjamin <
Benjamin.Stadin at heidelberg-mobil.com>:

> Hi,
> I want to double check the earth radius used by OSM and zoom levels is
> exactly 6372.7982 as said here:
> http://wiki.openstreetmap.org/wiki/Zoom_levels.
> I couldn¹t find this as constant in the sources yet. I¹m creating a new
> storage system for vector tiles, independent of a projection.
> Best
> Ben
> _______________________________________________
> dev mailing list
> dev at openstreetmap.org
> https://lists.openstreetmap.org/listinfo/dev
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