google-code-export / thebigpicture

Automatically exported from code.google.com/p/thebigpicture
1 stars 1 forks source link

IPTC tags sometimes need to be adjacent #22

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago
The IPTC specification specifies that certain IPTC tags may occur only next
to another one, if that other one is set. This is for example the case for
ContentLocationCode and ContentLocationName.

Normally, this problem is solved by the requirement that IPTC tags need to
be sorted (they have respectively number 2:26 and 2:27). However, both tags
are repeatable. So what's the correct way to implement this? And what's the
correct way to let the user set these properties?

Also, should we really care about this?

Original issue reported on code.google.com by p.edel...@gmail.com on 20 Mar 2007 at 7:32

GoogleCodeExporter commented 9 years ago
Correction: only records need to be sorted in numerical order, not the tags 
themselves.

The questions still remain: how can the user set this and should we really care?

Original comment by p.edel...@gmail.com on 20 Mar 2007 at 7:34

GoogleCodeExporter commented 9 years ago
There's a note regarding this issue in the spec: "Note: The intention is that
DataSets 2:26 and 2:27 can occur either as repeatable codes, repeatable names 
or in
code/name  pairs. Mixed presentation is not allowed in one object."

I don't know whether this situation also occurs in other places.

Original comment by p.edel...@gmail.com on 20 Mar 2007 at 7:37