[mapserver-dev] PROJ4 and EPSG database

[Yewondwossen Assefa]

Frank Warmerdam wrote:
> 
> Folks,
> 
> I would point out that MapServer already has a concept of axis ordering
> implemented for WCS.  Of note are the msAxisNormalizePoints() and
> msAxisDenormalizePoints() functions in mapproject.c.  These are tied to
> epsgaxis= settings which can be "en" for easting,northing or "ne" for
> northing,easting.
> 
> Currently mapfile.c's proj init function has a special case to set this
> parameter for EPSG urn's in a particular range.  In the short term I
> think this is the logical mechanism to extend when working on WMS 1.3.0.
> 

Frank,

This is exactly how I am implementing the proj support for wms1.3.0: 
extend the functions to support more CRS codes and the AUTO2.  The only 
difference that I saw from WCS1.1 would be to allow all EPSG projection 
strings (given as Urns or just ESPG:XXXX) to pass though the functions 
to set the axes order for those particular ESPG ranges.


Assefa



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Assefa Yewondwossen
Software Analyst

Email: assefa at dmsolutions.ca
http://www.dmsolutions.ca/

Phone: (613) 565-5056 (ext 14)
Fax:   (613) 565-0925
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