[El] epsg file missing and proj is looking for it

[Frank Warmerdam]

Mathieu Baudier wrote:
>> I agree with Frank. We should consider to include proj-epsg in the requirements list of proj (and maybe drop a note to upstream Fedora about this).
> 
> yes, we often have this problem that proj-epsg (and sometimes
> proj-nad) are actually required.
> 
> Are there any good reason to keep proj-epsg separated at all?
> I guess the idea is to be able to update the EPSG list independently
> but in the end we will always rebuild the whole package (or we should
> maintain a completely separate package like tzdata for java, which
> provides timezone information; but I don't think that it is worth the
> effort)

Mathieu,

There have been concerns from some packagers about whether the epsg
init file is really free.  I don't recall what the rationale was for
considering it non-free but the EPSG folks do ask that you don't modify
the data and still represent it as coming from them.

> What about epsg-nad?
> Should it also always be included?
> It is not really clear to me what it is for...

The epsg-nad package has datum shift grid files for several datums.
Originally it was just for the North American Datum of 1927 - hence
the name.  The datum shift files tend to be large, and for a significant
portion of users they are useless.  So I'm not so opposed to them being
distinct and optional.

Best regards,
-- 
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I set the clouds in motion - turn up   | Frank Warmerdam, warmerdam at pobox.com
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and watch the world go round - Rush    | Geospatial Programmer for Rent