[OSGeo-Discuss] OSGEO code

Christopher Schmidt crschmidt at crschmidt.net
Tue Dec 22 11:27:01 PST 2009

On Tue, Dec 22, 2009 at 10:29:56AM +0000, Jo wrote:
> Hi,
> I apologise if this is out of topic, but I don't know where else to post
> this question.
> I'm implementing the OSGEO Tile Map Server
> http://wiki.osgeo.org/wiki/Tile_Map_Service_Specification
> <http://wiki.osgeo.org/wiki/Tile_Map_Service_Specification>and I came across
> a SRS named "OSGEO:41001";
> since I don't know this authority and code, I was wondering if it is the
> same as Google Mercator ("EPSG:900913").
> This was also suggested to me from reading in other places:

41001 no longer has any meanng, but what we meant by it at the time is 
what we now call 900913.

For a time, this was EPSG:3785; this is now EPSG:3857.

All 4 of those (and occasionally 54004) mean essentially the same thing in
common usage.

> http://trac.osgeo.org/gdal/wiki/SoCGDAL2Tiles#NewsuggestionsforTMSStandard
> <http://trac.osgeo.org/gdal/wiki/SoCGDAL2Tiles#NewsuggestionsforTMSStandard>If
> it is the same, maybe it would be a good idea to change the code for EPSG
> (update the spec), for a matter of inter operability and compatibility with
> other services?
> If it is not the same, I would really appreciate if you could point me to
> other places where I can get more information about this SRS.
>                                                             Thanks in
> advance,
>  best regards,
>                       Jo
> -- 
> "#define QUESTION ((bb) || !(bb))"  (Shakespeare)

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Christopher Schmidt
Web Developer

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