What timing. I just created a wiki page on this very subject. [1] I've been meaning to submit a bug, but the "Mercator" projection in JOSM is NOT EPSG:3857 as it claims, I'm not sure what EPSG or ESRI code it corresponds to.
The definitions of EPSG:3785 and EPSG:3875 are different, but they should be equivalent. -Josh [1]: http://wiki.openstreetmap.org/wiki/EPSG:3857 On Sun, Feb 20, 2011 at 8:44 PM, M∡rtin Koppenhoefer <[email protected]> wrote: > 2011/2/21 Frederik Ramm <[email protected]>: >> Hi, >> >> M?rtin Koppenhoefer wrote: >>> >>> JOSM currently does not permit to set the Google / Bing / standard >>> Mapnik projection if I interpret this right (there is "Mercator" which >>> is EPSG 3857 according to JOSM). Wouldn't it be better to set EPSG >>> 3785 (aka 900913) as "Mercator"? >> >> EPSG:3857 is the "correct" number of this projection. 3785 is deprecated. >> See >> http://viswaug.wordpress.com/2009/04/01/gis-standards-gone-crazy-epsg-especially/ >> >> All, including 900913, mean the same. > > > I know that 3857 was introduced to replace 3785 but I get (got) > slightly different results for 3785 and 3857 and the definitions you > can find at EPSG are also slightly different. ( I am aware that EPSG > says that 3785 is "not valid"). > > cheers, > Martin > > _______________________________________________ > josm-dev mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/josm-dev > _______________________________________________ josm-dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/josm-dev
