[PROJ] Area of usage (short) name

[Even Rouault]

Javier,

digging a bit, there's a bit of back & forth history involved.

Originally, PROJ returned the short name as the extent description . But 
then 
https://github.com/OSGeo/PROJ/commit/3ed9a613d8da9874f45d2a069686f1fa38c72ad9 
came: "Database: use extended description for extent/area of use, as 
done by epsg.org WKT export"

EPSG apparently changed again their mind later since I see now that in 
their WKT output there's no longer any USAGE[] node.

So basically the object model of osgeo::proj::metadata::Extent should 
likely be extended with a shortName() getter (the corresponding GeoAPI 
class that serves as the inspiration, 
http://www.geoapi.org/3.0/javadoc/org.opengis.geoapi/org/opengis/metadata/extent/Extent.html, 
has a single getDescription()), a C binding to get it (likely 
proj_get_area_of_use_ex2()), and 
AuthorityFactory::Private::createPropertiesSearchUsages() be modified to 
populate it.

Even

Le 18/07/2023 à 00:52, Javier Jimenez Shaw a écrit :
> Hi
>
> I have realized that extents have a name and a description. For 
> instance NAVD88 has a short name "North America - Mexico and USA - 
> onshore" and a long description:
> "Mexico - onshore. United States (USA) - CONUS and Alaska - onshore - 
> Alabama; Alaska; Arizona; Arkansas; California; Colorado; Connecticut; 
> Delaware; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; Kansas; 
> Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; 
> Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New 
> Hampshire; New Jersey; New Mexico; New York; North Carolina; North 
> Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South 
> Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; 
> Washington; West Virginia; Wisconsin; Wyoming."
>
> https://epsg.org/crs_5703/NAVD88-height.html
>
> In PROJ I can find only the description in 
> "osgeo::proj::metadata::Extent::description" or in 
> "osgeo::proj::io::AuthorityFactory::CRSInfo::areaName" (yes, this is 
> the description, not the name)
>
> Is there a way to get the (short) name?
>
> Thanks.
>
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