[josm-dev] projection Mercator, set EPSG 3785 instead of EPSG 3857

M∡rtin Koppenhoefer dieterdreist at gmail.com
Mon Feb 21 01:44:33 GMT 2011


2011/2/21 Frederik Ramm <frederik at remote.org>:
> 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



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