[postgis-users] Coordinate transformation problem

[strk at refractions.net]

Just a note, in current SVN the spatial_ref_sys table
have been updated to EPSG 6.11.1

--strk;

On Tue, Oct 24, 2006 at 01:52:34PM +0200, Arnaud Lesauvage wrote:
> Guido Lemoine a écrit :
> >Are you sure your Belgian Lambert 1972 has SRID 31370, and not 31300??
> 
> I tried both projections actually ("Belge 1972" and "Belgian 
> 1972").
> 
> The content of my .prj file is :
> PROJCS["Belge_Lambert_1972",
> GEOGCS["GCS_Belge_1972",
> DATUM["D_Belge_1972",SPHEROID["International_1924",6378388,297]],
> PRIMEM["Greenwich",0],
> UNIT["Degree",0.0174532925199432955]],
> PROJECTION["Lambert_Conformal_Conic"],
> PARAMETER["False_Easting",150000.01256],
> PARAMETER["False_Northing",5400088.4378],
> PARAMETER["Central_Meridian",4.367486666666666],
> PARAMETER["Standard_Parallel_1",49.8333339],
> PARAMETER["Standard_Parallel_2",51.16666733333333],
> PARAMETER["Latitude_Of_Origin",90],UNIT["Meter",1]]
> 
> If you check in your spatial_ref_sys table, this is 31370.
> 
> I have even added a new line in spatial_ref_sys with this 
> projection's exact parameters, but the difference with the 
> "real" 31370 projection is only ~2 or 3 millimeters.
> 
> --
> Arnaud
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