[Proj] +axis switch to control axis orientation

Daniel Morissette dmorissette at mapgears.com
Tue Mar 2 14:54:13 EST 2010

Frank Warmerdam wrote:
> If I just carry through the EPSG axis orientation, I'm worried that
> lots of coordinate systems that were in reasonably wide use will
> suddenly be broken.  I am not sure how to address this.  I could take
> the EPSG/EPSGA approach where I only used the EPSG axis orientation
> in exceptional circumstances (like TM south oriented projections) in
> the epsg init file, but do use them all the time in the "epsga" file.

I see your point, I had not thought of those potential side-effects. 
Perhaps the EPSG/EPSGA approach would be best then, and apps that want 
to use +axis info would read it from the EPSGA file.

Daniel Morissette

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