[Proj] Coordinate change transforming to EPSG:4326

[Cuinet Jérôme]

I have snooped EPSG:23209 definition and I haven't found any definition.

What is this coordinate system ?



Jérôme
----- Original Message ----- 
From: "Miguel R. Luaces" <miguelrluaces at gmail.com>
To: <proj at lists.maptools.org>
Sent: Tuesday, May 26, 2009 6:03 PM
Subject: [Proj] Coordinate change transforming to EPSG:4326


> Dear all,
>
> I am using proj.4 as part of PostGIS. Version 1.3.1 of postgis included 
> PRO
> Rel. 4.5.0, whereas version 1.36 includes PROJ Rel. 4.6.1
>
> When I transform a coordinate from EPSG:23209 to EPSG:4326 I get the
> following results.
>
> In Postgis 1.3.1 (PROJ.4 Rel. 4.5.0):
>
> "POINT(549556.009066526 4801796.3531214)";"POINT(-8.38839299999999
> 43.3657910268222)"
>
> In Postgis 1.3.6 (PROJ Rel. 4.6.1):
>
> "POINT(549556.009066526 4801796.3531214)";"POINT(-8.38839299999999
> 43.3666118995462)"
>
> The second coordinate of the transformation to 4326 changes by 0.004 
> degrees
> (approx).
>
> If I use cs2cs from command line (version proj446_win32), I get:
>
> -8.38839300     43.36661190
>
> Why do I get a different result in postgis 1.3.1 and in postgis 1.3.6?
>
> Why do I get the same result in PROJ4 4.4.6?
>
> I do not understand. I hope anybody can help me.
>
> Best regards,
>  Miguel
>


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