[Proj] datum does not change?

[Frank Warmerdam]

On Mon, 21 Mar 2005 22:46:01 +0100, Robert Jaeschke <robert-j at gmx.de> wrote:
> But that leads me to another question: if I use
> > invproj +init:epsg=31464
> then the datum isn't converted, although EPSG:31467 has the
> +datum=potsdam switch? I think, that would be very strange.

Robert, 

The above will convert between projected coordinates in 
EPSG 31467 and geographic coordinates *on the same datum*. 
 
> So what I want is:
> 
> cs2cs +init=epsg:31467 +to +proj=latlong +datum=WGS84

Yes, assuming you want to convert to WGS84. 

Best regards,
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